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Nissan navara np300 (d23) esm tai lieu sua chua phan 7

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Tiêu đề Nissan Navara NP300 (D23) ESM Tài Liệu Sửa Chữa Phần 7
Thể loại manual
Năm xuất bản 2014
Định dạng
Số trang 1.376
Dung lượng 32,45 MB
File đính kèm Nissan Navara NP300_Tai lieu sua chua phan 7.zip (25 MB)

Cấu trúc

  • A- BAG BRANCH LINE CIRCUIT (100)

Nội dung

Tài liệu hướng dẫn sửa chữa xe Nissan navara np300 (d23) esm tai lieu sua chua phan 7 . Cung cấp các thông tin cần thiết cho Kỹ thuật viên tiến hành chẩn đoán, sửa chữa nhanh chóng, chính xác, hiệu quả

BAG BRANCH LINE CIRCUIT

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the differential lock control unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of differential lock control unit.

2 Check the resistance between the differential lock control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the differential lock control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the differential lock control unit Refer to DLN-299, "Diagno- sis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the differential lock control unit Refer to DLN-307, "Removal and Installa- tion".

YES (Past error)>>Error was detected in the differential lock control unit branch line.

NO >> Repair the power supply and the ground circuit.

Differential lock control unit harness connector

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 501)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 502)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 503)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 504)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

MAIN LINE BETWEEN IPDM-E AND STRG CIRCUIT

MAIN LINE BETWEEN IPDM-E AND STRG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of steering angle sensor.

2 Check the continuity between the harness connector and the steering angle sensor.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the steering angle sensor

NO >> Repair the main line between the harness connector M29 and the steering angle sensor.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Steering angle sensor harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN STRG AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

MAIN LINE BETWEEN STRG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the steering angle sensor harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the steering angle sensor and the data link connector

NO >> Repair the main line between the steering angle sensor and the data link connector.

Steering angle sensor harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 505)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 506)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 507)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 508)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 511)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 512)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 513)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 514)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E73 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 515)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

MAIN LINE BETWEEN 4WD AND IPDM-E CIRCUIT

MAIN LINE BETWEEN 4WD AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the transfer control unit harness connector and the IPDM E/R harness con- nector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the IPDM E/R

NO >> Repair the main line between the transfer control unit and the IPDM E/R.

Transfer control unit harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 516)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 517)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the differential lock control unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of differential lock control unit.

2 Check the resistance between the differential lock control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the differential lock control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the differential lock control unit Refer to DLN-299, "Diagno- sis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the differential lock control unit Refer to DLN-307, "Removal and Installa- tion".

YES (Past error)>>Error was detected in the differential lock control unit branch line.

NO >> Repair the power supply and the ground circuit.

Differential lock control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 518)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 519)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E73 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 520)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E73 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 521)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

MAIN LINE BETWEEN TCM AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E73 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the differential lock control unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of differential lock control unit.

2 Check the resistance between the differential lock control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the differential lock control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the differential lock control unit Refer to DLN-299, "Diagno- sis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the differential lock control unit Refer to DLN-307, "Removal and Installa- tion".

YES (Past error)>>Error was detected in the differential lock control unit branch line.

NO >> Repair the power supply and the ground circuit.

Differential lock control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 522)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the air bag diagnosis sensor unit

NO >> Repair the main line between the harness connector M29 and the air bag diagnosis sensor unit.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the harness connectors of E47 and M29.

4 Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the data link connector

NO >> Repair the main line between the air bag diagnosis sensor unit and the data link connector.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 531)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 540)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

MAIN LINE BETWEEN IPDM-E AND A-BAG CIRCUIT

MAIN LINE BETWEEN IPDM-E AND A-BAG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the air bag diagnosis sen- sor unit

NO >> Repair the main line between the harness connector M29 and the air bag diagnosis sensor unit.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the harness connectors of E47 and M29.

4 Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the data link connector

NO >> Repair the main line between the air bag diagnosis sensor unit and the data link connector.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 541)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND STRG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

MAIN LINE BETWEEN IPDM-E AND STRG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of steering angle sensor.

2 Check the continuity between the harness connector and the steering angle sensor.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the steering angle sensor

NO >> Repair the main line between the harness connector M29 and the steering angle sensor.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Steering angle sensor harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

MAIN LINE BETWEEN STRG AND DLC CIRCUIT

MAIN LINE BETWEEN STRG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the steering angle sensor harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the steering angle sensor and the data link connector

NO >> Repair the main line between the steering angle sensor and the data link connector.

Steering angle sensor harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 542)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation". YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation".

YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 543)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the air bag diagnosis sensor unit

NO >> Repair the main line between the harness connector M29 and the air bag diagnosis sensor unit.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the harness connectors of E47 and M29.

4 Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the data link connector

NO >> Repair the main line between the air bag diagnosis sensor unit and the data link connector.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 544)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the air bag diagnosis sensor unit

NO >> Repair the main line between the harness connector M29 and the air bag diagnosis sensor unit.

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the harness connectors of E47 and M29.

4 Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the data link connector

NO >> Repair the main line between the air bag diagnosis sensor unit and the data link connector.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 545)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 546)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

MAIN LINE BETWEEN IPDM-E AND TCM CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- Harness connector E73 and F50 (LHD models)

- Harness connector E24 and F19 (RHD models)

4 Check the continuity between the IPDM E/R harness connector and the TCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the TCM

NO >> Repair the main line between the IPDM E/R and the TCM.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

MAIN LINE BETWEEN TCM AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the harness connectors.

Is the inspection result normal?

NO >> Repair the main line between the harness connectors E24 and E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the TCM and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/T assembly.

2 Check the resistance between the A/T assembly harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the TCM branch line.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Remove the joint connector Refer to TM-301, "Removal and Installation".

2 Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.

Is the inspection result normal?

NO >> Repair the joint connector.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM Refer to TM-274, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the control valve & TCM Refer to TM-301, "Removal and Installation".

YES (Past error)>>Error was detected in the TCM branch line.

NO >> Repair the power supply and the ground circuit.

A/T assembly harness connector side TCM harness connector side

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the differential lock control unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of differential lock control unit.

2 Check the resistance between the differential lock control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the differential lock control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the differential lock control unit Refer to DLN-299, "Diagno- sis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the differential lock control unit Refer to DLN-307, "Removal and Installa- tion".

YES (Past error)>>Error was detected in the differential lock control unit branch line.

NO >> Repair the power supply and the ground circuit.

Differential lock control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 547)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

Is the measurement value within the specification?

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 549)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

MAIN LINE BETWEEN 4WD AND ABS CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the transfer control unit harness connector and the ABS actuator and elec- tric unit (control unit) harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit)

NO >> Repair the main line between the transfer control unit and the ABS actuator and electric unit (con- trol unit)

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 3.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of combination meter.

4 Check the continuity between the data link connector and the combination meter harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the connector of BCM.

4 Check the continuity between the data link connector and the BCM harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the air bag diag- nosis sensor unit

NO >> Repair the main line between the data link connector and the air bag diagnosis sensor unit

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

Data link connector BCM harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 550)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector

NO >> Repair the main line between the harness connector M29 and the data link connector.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 551)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

MAIN LINE BETWEEN IPDM-E AND M&A CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the connector of combination meter.

2 Check the continuity between the harness connector and the combination meter.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the combination meter

NO >> Repair the main line between the harness connector M29 and the combination meter.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Combination meter harness connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

4 Check the continuity between the combination meter harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the combination meter and the data link con- nector

NO >> Repair the main line between the combination meter and the data link connector.

Combination meter harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 552)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

MAIN LINE BETWEEN ABS AND IPDM-E CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the following harness connectors.

- ABS actuator and electric unit (control unit)

4 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the IPDM E/R harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R

NO >> Repair the main line between the ABS actuator and electric unit (control unit) and the IPDM E/R.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

ABS actuator and electric unit (control unit) harness connector IPDM E/R harness connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

MAIN LINE BETWEEN IPDM-E AND A-BAG CIRCUIT

MAIN LINE BETWEEN IPDM-E AND A-BAG CIRCUIT

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Disconnect the following harness connectors.

2 Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

NO >> Repair the main line between the IPDM E/R and the harness connector E47.

3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the air bag diagnosis sen- sor unit

NO >> Repair the main line between the harness connector M29 and the air bag diagnosis sensor unit.

IPDM E/R harness connector Harness connector

Connector No Terminal No Connector No Terminal No.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect the harness connectors of E47 and M29.

4 Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the data link connector

NO >> Repair the main line between the air bag diagnosis sensor unit and the data link connector.

Harness connector Data link connector

Connector No Terminal No Connector No Terminal No.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ECM.

2 Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the ECM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM Refer to EC-555, "Diagnosis Procedure".

• QR25DE: EC-152, "Diagnosis Procedure"

• YD25DDTi: EC-555, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM Refer to following.

• QR25DE: EC-403, "Removal and Installation"

• YD25DDTi: EC-741, "Removal and Installation"

YES (Past error)>>Error was detected in the ECM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of ABS actuator and electric unit (control unit).

2 Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi- nals.

Is the measurement value within the specification?

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit) Refer to the following.

• Without VDC (With ABS): BRC-92, "Diagnosis Procedure"

• With VDC: BRC-265, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit) Refer to following.

• Without VDC (With ABS): BRC-119, "Removal and Installation"

• With VDC: BRC-291, "Removal and Installation"

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO >> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

ABS actuator and electric unit (control unit) harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of IPDM E/R.

2 Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the IPDM E/R branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-37, "Diagnosis Procedure"

• Without Intelligent Key system: PCS-70, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R Refer to the following.

• With Intelligent Key system: PCS-38, "Removal and Installation"

• Without Intelligent Key system: PCS-71, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con- nection (unit side and connector side).

Is the inspection result normal?

NO >> Replace the main harness.

2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit Refer to SRC-24, "Work Flow".

Is the inspection result normal?

YES >> Replace the main harness.

NO >> Replace parts whose air bag system has a malfunction.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

- Without Intelligent Key system (Monochrome information display)

- Without Intelligent Key system (Color information display)

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to the following.

• With Intelligent Key system: MWI-234, "COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure"

• Color display models without Intelligent Key system: MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

• Monochrome display models without Intelligent Key system: MWI-235, "COMBINATION METER (MONO- CHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of steering angle sensor.

2 Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the steering angle sensor branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor Refer to BRC-185, "Wiring Dia- gram".

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor Refer to BRC-293, "Removal and Installation".

YES (Past error)>>Error was detected in the steering angle sensor branch line.

NO >> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the transfer control unit for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of transfer control unit.

2 Check the resistance between the transfer control unit harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the transfer control unit branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the transfer control unit Refer to DLN-94, "Description".

Is the inspection result normal?

YES (Present error)>>Replace the transfer control unit Refer to DLN-108, "Removal and Installation". YES (Past error)>>Error was detected in the transfer control unit branch line.

NO >> Repair the power supply and the ground circuit.

Transfer control unit harness connector

Transfer control unit harness connector

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit.

NO >> Repair the data link connector branch line.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

Which is the vehicle specification?

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C auto amp terminals and connectors for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C auto amp.

2 Check the resistance between the A/C auto amp harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the A/C auto amp branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp Refer to HAC-89, "A/C AUTO AMP : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp Refer to HAC-112, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C auto amp branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the A/C amp terminals and connectors for damage, bend and loose connection (unit side and con- nector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of A/C amp.

2 Check the resistance between the A/C amp harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

NO >> Repair the A/C amp branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C amp Refer to HAC-181, "A/C AMP : Diagnosis Pro- cedure".

Is the inspection result normal?

YES (Present error)>>Replace the A/C amp Refer to HAC-203, "Removal and Installation".

YES (Past error)>>Error was detected in the A/C amp branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

Vehicle without Intelligent Key system include BCM in the combination meter.

Which is the vehicle specification?

Without Intelligent Key system>>GO TO 2.

With Intelligent Key system>>GO TO 5.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

3.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.

2 Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

NO >> Repair the combination meter branch line.

4.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter Refer to MWI-234, "COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the combination meter Refer to MWI-264, "Removal and Installation".

YES (Past error)>>Error was detected in the combination meter branch line.

NO >> Repair the power supply and the ground circuit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

NO >> Repair the terminal and connector.

6.CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of BCM.

2 Check the resistance between the BCM harness connector terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

Is the measurement value within the specification?

NO >> Repair the BCM branch line.

7.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM Refer to BCS-90, "Diagnosis Procedure".

Is the inspection result normal?

YES (Present error)>>Replace the BCM Refer to BCS-95, "Removal and Installation".

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect all the unit connectors on CAN communication system.

4 Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

NO >> Repair the terminal and connector.

2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

NO >> Check the harness and repair the root cause.

3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES (Without Intelligent key system)>>GO TO 4.

YES (With intelligent key system)>>GO TO 5.

NO >> Check the harness and repair the root cause.

4.CHECK ECM AND COMBINATION METER TERMINATION CIRCUIT

1 Remove the ECM and the combination meter.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the combination meter terminals.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

Is the measurement value within the specification?

NO >> Replace the ECM and/or the combination meter.

5.CHECK ECM AND BCM TERMINATION CIRCUIT

1 Remove the ECM and the BCM.

2 Check the resistance between the ECM terminals.

3 Check the resistance between the BCM terminals.

Is the measurement value within the specification?

NO >> Replace the ECM and/or the BCM.

Connect all the connectors Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Non-reproduced>>Start the diagnosis again Follow the trouble diagnosis procedure when past error is detected.

Perform the reproduction test as per the following procedure for each unit.

1 Turn the ignition switch OFF.

2 Disconnect the battery cable from the negative terminal.

3 Disconnect one of the unit connectors of CAN communication system.

• With Intelligent Key system: ECM and BCM have a termination circuit Check other units first.

• Without Intelligent Key system: ECM and combination meter have a termination circuit Check other units first.

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 553)]

4 Connect the battery cable to the negative terminal Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced

Although unit-related error symptoms occur, do not confuse them with other symptoms

Reproduced>>Connect the connector Check other units as per the above procedure.

Non-reproduced>>Replace the unit whose connector was disconnected.

Precautions for Removing Battery Terminal 4

SERVICE DATA AND SPECIFICATIONS (SDS) 15

SERVICE DATA AND SPECIFICATIONS (SDS) 15 Periodical Maintenance Specification 15 Engine Oil Pressure 15

PRECAUTIONS 16 Precautions for Removing Battery Terminal 16 Precautions For Engine Service 16 Precaution for Liquid Gasket 17

PREPARATION 18 Special Service Tool 18 Commercial Service Tool 18

DESCRIPTION 20 Engine Lubrication System 20 Engine Lubrication System Schematic 21

ENGINE OIL 22 Inspection 22 Draining 23 Refilling 23

OIL FILTER 25 Removal and Installation 25 Inspection 26

SERVICE DATA AND SPECIFICATIONS (SDS) 35

SERVICE DATA AND SPECIFICATIONS (SDS) 35 Periodical Maintenance Specification 35Engine Oil Pressure 35

1 Remove old liquid gasket adhering to the liquid gasket application surface and the mating surface.

• Remove liquid gasket completely from the liquid gasket application surface, mounting bolts, and bolt holes.

2 Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating use) to remove adhering moisture, grease and foreign materials.

3 Apply liquid gasket to the liquid gasket application surface.

Use Genuine Liquid Gasket or equivalent.

• Within five minutes of liquid gasket application, install the mating component.

• If liquid gasket protrudes, wipe it off immediately.

• Do not retighten mounting bolts or nuts after the installation.

• After 30 minutes or more have passed from the installation, fill engine oil and engine coolant.

Precautions For Engine Service INFOID:0000000011616203

• Before starting work, check no fire or spark producing items are in the work area

• Release fuel pressure before disconnecting and disassembly.

• After disconnecting pipes, plug openings to stop fuel leakage.

Drain engine coolant and engine oil when the engine is cooled.

Before repairing or replacing, thoroughly inspect parts Inspect new replacement parts in the same way, and replace if necessary.

• When instructed to use SST, use specified tools Always be careful to work safely, avoid forceful or unin- structed operations

• Exercise maximum care to avoid damage to mating or sliding surfaces.

• Dowel pins are used for several parts alignment When replacing and reassembling parts with dowel pins, check that dowel pins are installed in the original position.

• Must cover openings of engine system with a tape or equivalent, to seal out foreign materials.

• Mark and arrange disassembly parts in an organized way for easy troubleshooting and reassembly.

To effectively loosen nuts and bolts, always begin with the one located furthest outside, followed by the diagonally opposite one, and continue this pattern If a specific order for loosening is provided, adhere strictly to those instructions Utilizing power tools can be beneficial during this process.

• Use torque wrench to tighten bolts or nuts to specification.

When tightening nuts and bolts, it is essential to follow a systematic approach by tightening them in multiple steps Begin with the center nuts, then proceed to the inner and outer ones in a diagonal pattern Always adhere to the specified order of tightening when provided.

• Replace with new gasket, packing, oil seal or O-ring.

• Thoroughly wash, clean, and air-blow each part Carefully check engine oil or engine coolant passages for any restriction and blockage

• Avoid damaging sliding or mating surfaces Completely remove foreign materials such as cloth lint or dust. Before assembly, oil sliding surfaces well

• After disassembling, or exposing any internal engine parts, change engine oil and replace oil filter with a new one.

• Release air within route when refilling after draining engine coolant

• After repairing, start the engine and increase engine speed to check engine coolant, fuel, engine oil, and exhaust gases for leakage.

Precautions for Removing Battery Terminal INFOID:0000000011616204

When disconnecting the battery terminal, pay attention to the following.

• Always use a 12V battery as power source.

• Never disconnect battery terminal while engine is running.

• When removing the 12V battery terminal, turn OFF the ignition switch and wait at least 30 seconds.

• For vehicles with the engine listed below, remove the battery termi- nal after a lapse of the specified time:

After the ignition switch is turned off, the ECU can remain active for several seconds Disconnecting the battery terminal during this time may lead to DTC detection errors or corruption of ECU data.

• After high-load driving, if the vehicle is equipped with the V9X engine, turn the ignition switch OFF and wait for at least 15 minutes to remove the battery terminal.

• Turbocharger cooling pump may operate in a few minutes after the ignition switch is turned OFF.

• Example of high-load driving

- Driving for 30 minutes or more at 140 km/h (86 MPH) or more.

- Driving for 30 minutes or more on a steep slope.

• For vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON the ignition switch.

If the ignition switch is turned ON with any one of the terminals of main battery and sub battery discon- nected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

The removal of 12V battery may cause a DTC detection error.

D4D engine : 20 minutes ZD30DDTi : 60 seconds

HRA2DDT : 12 minutes ZD30DDTT : 60 seconds

Maximum measuring range: 2,452 kPa (24.52 bar, 25 kg/cm 2 , 356 psi)

Adapting oil pressure gauge to cylinder block

Removing and installing oil filter a: 64.3 mm (2.531 in)

Deep socket Removing and installing oil pressure switch

Tube presser Pressing the tube of liquid gasket

Exhaust camshaft Intake camshaft Crankshaft

Oil jet Oil pressure switch Oil cooler

Oil filter (With relief valve) Balancer unit Chain oil jet

Chain tensioner Intake valve timing control solenoid valve

Exhaust valve timing control sole- noid valve

Exhaust valve timing controller Intake valve timing controller

Engine Lubrication System Schematic INFOID:0000000011616208

Before starting engine, put vehicle horizontally and check the engine oil level If engine is already started, stop it and allow 10 minutes before checking.

1 Pull out oil level gauge and wipe it clean.

2 Insert oil level gauge and check that the engine oil level is within the range shown in the figure.

3 If it is out of range, adjust it.

• Check engine oil for white turbidity or heavy contamination.

• If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant. Repair or replace damaged parts.

Check for engine oil leakage around the following area.

• Intake valve timing control solenoid valve and exhaust valve timing control solenoid valve

• Mating surface between cylinder block and cylinder head

• Mating surface between cylinder block and lower cylinder block

• Mating surface between cylinder head and rocker cover

• Crankshaft oil seals (front and rear)

• Be careful not to get burned, as engine oil may be hot.

• When checking engine oil pressure, shift position should be “Parking position”, and apply parking brake securely.

1 Check the engine oil level.

2 Remove fender protector (RH) Refer to EXT-23, "Removal and Installation".

3 Disconnect harness connector at oil pressure switch , and remove oil pressure switch using a deep socket (commercial service tool).

Never drop or shock oil pressure switch.

4 Install oil pressure gauge [SST: ST25051001] (A) and hose

5 Start engine and warm it up to normal operating temperature.

6 Check oil pressure with engine running under no-load.

When engine oil temperature is low, engine oil pressure becomes high.

If difference is extreme, check oil passage and oil pump for oil leakage.

After completing the inspections, proceed to install the oil pressure switch by first removing any old liquid gasket residue from both the oil pressure switch and the engine Next, apply a fresh layer of liquid gasket and securely tighten the oil pressure switch according to the specified torque requirements.

Use Genuine Liquid Gasket or equivalent c Check engine oil level. d After warming up engine, check that there is no leakage of engine oil with running engine.

• Be careful not to get burned, as engine oil may be hot.

Prolonged exposure to used engine oil can increase the risk of skin cancer, so it is essential to avoid direct skin contact If contact occurs, promptly wash the affected area with soap or hand cleaner to minimize health risks.

1 Warm up the engine, and check for engine oil leakage from engine components Refer to LU-8, "Inspec- tion".

2 Stop the engine and wait for 10 minutes.

4 Remove drain plug and then drain engine oil.

Engine oil pressure : Refer to LU-15, "Engine Oil Pressure".

Tightening torque : Refer to EM-96, "Exploded View".

1 Install drain plug with new drain plug washer Refer to EM-47, "Exploded View".

Be sure to clean drain plug and install with new drain plug washer.

2 Refill with new engine oil.

Engine oil specification and viscosity: Refer to MA-23, "Fluids and Lubricants".

• The refill capacity depends on the engine oil temperature and drain time Use these specifica- tions for reference only.

• Always use oil level gauge to determine the proper amount of engine oil in the engine.

3 Warm up engine and check area around drain plug and oil filter for engine oil leakage.

4 Stop engine and wait for 10 minutes.

5 Check the engine oil level Refer to LU-8, "Inspection".

Tightening torque : Refer to EM-47, "Exploded View".

Engine oil capacity : Refer to LU-15, "Periodical Maintenance Specification".

1 Using the oil filter wrench [SST: KV10115801] (A), remove oil fil- ter.

Be careful not to get burned when the engine and engine oil may be hot.

• Oil filter is provided with relief valve Use Genuine NIS-

SAN Oil Filter or equivalent.

• When removing, prepare a shop cloth to absorb any engine oil leakage or spillage.

• Completely wipe off any engine oil that adheres to the engine and the vehicle.

1 Remove foreign materials adhering to the oil filter installation surface.

2 Apply new engine oil to the oil seal contact surface of new oil fil- ter.

3 Screw oil filter manually until it touches the installation surface, then tighten it by 2/3 turn Or tighten to specification.

1 Check the engine oil level Refer to LU-8, "Inspection".

2 Start the engine, and check that there is no leakage of engine oil.

3 Stop the engine and wait for 10 minutes.

4 Check the engine oil level, and adjust the level Refer to LU-8, "Inspection".

< REMOVAL AND INSTALLATION > [QR25DE]

Be careful not to get burned when engine coolant and engine oil may be hot.

• When removing oil cooler, prepare a shop cloth to absorb any engine oil leakage or spillage.

• Completely wipe off any engine oil that adhere to the engine and the vehicle.

To properly drain the engine coolant, locate the radiator drain cock at the bottom of the radiator and the water drain plug on the cylinder block For detailed instructions, refer to CO-10, "Draining," and EM-97, "Disassembly and Assembly."

2 Disconnect water hoses from oil cooler.

3 Remove oil filter Refer to LU-11, "Removal and Installation".

For reference when installing, put a matching mark on oil cooler.

Cylinder block Oil cooler hose Clamp

Oil filter Connector bolt Oil cooler

O-ring Relief valve Oil cooler hose

To heater pipe Comply with the installation proce- dure when tightening Refer to LU-11 To cylinder block : Always replace after every disassembly.

< REMOVAL AND INSTALLATION > [QR25DE]

Check oil cooler for cracks Check oil cooler for clogging by blowing through engine coolant inlet If necessary, replace oil cooler assembly.

To ensure proper functionality, inspect the relief valve for any movement, cracks, or breaks by pressing the ball If the valve needs replacement, carefully pry it out using an appropriate tool Once removed, install the new valve by gently tapping it into place.

1 Check the engine oil level and the engine coolant level, and adjust the levels Refer to LU-8, "Inspection" and CO-10, "Inspection".

2 Start the engine, and check there is no leaks of engine oil or engine coolant.

3 Stop the engine and wait for 10 minutes.

4 Check the engine oil level and the engine coolant level again Refer to LU-8, "Inspection" and CO-10,

< REMOVAL AND INSTALLATION > [QR25DE]

Oil pump is integrated in the balancer unit Refer to EM-54, "Exploded View".

SERVICE DATA AND SPECIFICATIONS (SDS)

< SERVICE DATA AND SPECIFICATIONS (SDS) [QR25DE]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Unit: kPa (bar, kg/cm 2 , psi)

Drain and refill With oil filter change 4.7 (4-1/4)

Engine speed Approximate discharge pressure*

Precautions for Removing Battery Terminal INFOID:0000000010591741

When disconnecting the battery terminal, pay attention to the following.

• Always use a 12V battery as power source.

• Never disconnect battery terminal while engine is running.

• When removing the 12V battery terminal, turn OFF the ignition switch and wait at least 30 seconds.

• For vehicles with the engine listed below, remove the battery termi- nal after a lapse of the specified time:

After the ignition switch is turned OFF, the ECU can remain active for several tens of seconds Disconnecting the battery terminal during this time may lead to a DTC detection error or corruption of ECU data.

• After high-load driving, if the vehicle is equipped with the V9X engine, turn the ignition switch OFF and wait for at least 15 minutes to remove the battery terminal.

• Turbocharger cooling pump may operate in a few minutes after the ignition switch is turned OFF.

• Example of high-load driving

- Driving for 30 minutes or more at 140 km/h (86 MPH) or more.

- Driving for 30 minutes or more on a steep slope.

• For vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON the ignition switch.

If the ignition switch is turned ON with any one of the terminals of main battery and sub battery discon- nected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

The removal of 12V battery may cause a DTC detection error.

Precautions For Engine Service INFOID:0000000010521158

• Before starting work, check no fire or spark producing items are in the work area

• Release fuel pressure before disconnecting and disassembly.

• After disconnecting pipes, plug openings to stop fuel leakage.

Drain engine coolant and engine oil when the engine is cooled.

Before repairing or replacing, thoroughly inspect parts Inspect new replacement parts in the same way, and replace if necessary.

D4D engine : 20 minutes ZD30DDTi : 60 seconds

HRA2DDT : 12 minutes ZD30DDTT : 60 seconds

• Dowel pins are used for several parts alignment When replacing and reassembling parts with dowel pins, check that dowel pins are installed in the original position.

• Must cover openings of engine system with a tape or equivalent, to seal out foreign materials.

• Mark and arrange disassembly parts in an organized way for easy troubleshooting and reassembly.

When loosening nuts and bolts, begin with the one located furthest from the center, followed by the diagonally opposite one, and continue this pattern Always adhere to any specified order for loosening Utilizing power tools can be beneficial during this process.

• Use torque wrench to tighten bolts or nuts to specification.

When tightening nuts and bolts, it's essential to follow a systematic approach by tightening them in multiple steps Begin with the center nuts, followed by the inner and outer ones in a diagonal pattern If specific tightening instructions are provided, adhere to them precisely for optimal results.

• Replace with new gasket, packing, oil seal or O-ring.

• Thoroughly wash, clean, and air-blow each part Carefully check engine oil or engine coolant passages for any restriction and blockage

• Avoid damaging sliding or mating surfaces Completely remove foreign materials such as cloth lint or dust. Before assembly, oil sliding surfaces well

• After disassembling, or exposing any internal engine parts, change engine oil and replace oil filter with a new one.

• Release air within route when refilling after draining engine coolant

• After repairing, start the engine and increase engine speed to check engine coolant, fuel, engine oil, and exhaust gases for leakage.

Precaution for Liquid Gasket INFOID:0000000010521159

1 Remove old liquid gasket adhering to the liquid gasket application surface and the mating surface.

• Remove liquid gasket completely from the liquid gasket application surface, mounting bolts, and bolt holes.

2 Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating use) to remove adhering moisture, grease and foreign materials.

3 Apply liquid gasket to the liquid gasket application surface.

Use Genuine Liquid Gasket or equivalent.

• Within 5 minutes of liquid gasket application, install the mating component.

• If liquid gasket protrudes, wipe it off immediately.

• Never retighten mounting bolts or nuts after the installation.

• After 30 minutes or more have passed from the installation, fill engine oil and engine coolant.

Maximum measuring range: 2,452 kPa (24.52 bar, 25 kg/cm 2 , 356 psi)

Adapting oil pressure gauge to cylinder block

Removing oil filter φ 93.0 mm (3.661 in)

Power tools Loosening nuts and bolts

Tube presser Pressing the tube of liquid gasket

Deep socket Removing and installing oil pressure switch

The figure shows models without balancer unit.

Turbocharger Camshaft (EXH) Camshaft (INT)

Oil filter Oil cooler Vacuum pump

Oil pan Oil strainer Chain tensioner

Oil pump Crankshaft Primary timing chain

Relief valve Secondary timing chain Chain tensioner

Engine Lubrication System Schematic INFOID:0000000010521083

The figure shows models with balancer unit.

Before starting engine, put vehicle horizontally and check the engine oil level If engine is already started, stop it and allow 10 minutes before checking.

1 Pull out oil level gauge and wipe it clean.

2 Insert oil level gauge and check the engine oil level is within the range shown in the figure.

3 If it is out of range, adjust it.

• Check engine oil for white turbidity or heavy contamination.

• If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant. Repair or replace damaged parts.

Check for engine oil leakage around the following areas:

• Oil pan (lower and upper)

• Oil filter and oil filter bracket

• Front and rear chain cases

• Mating surface between cylinder block and cylinder head

• Mating surface between cylinder head and rocker cover

• Front and rear oil seals

• Oil tube connecting parts from turbocharger

• Be careful not to get burn yourself, as engine oil may be hot.

• Oil pressure check should be done in “Neutral position” (M/T models) or “Parking position” (A/T models).

1 Check the engine oil level.

2 Remove engine undercover front and engine undercover middle.

3 Disconnect harness connector at oil pressure switch , and remove oil pressure switch using deep socket (commercial ser- vice tool).

Never drop or shock oil pressure switch.

4 Install the oil pressure gauge [SST: ST25051001] (A) and hose

5 Start the engine and warm it up to normal operating temperature.

6 Check the engine oil pressure with engine running under no-load.

When the engine oil temperature is low, the engine oil pressure becomes high.

If difference is extreme, check engine oil passage and oil pump for engine oil leakage.

After completing the inspections, proceed to install the oil pressure switch by first removing any old liquid gasket from both the switch and the mating surface Next, apply a new layer of liquid gasket and securely tighten the oil pressure switch according to the specified torque requirements.

Use Genuine Liquid Gasket or equivalent. c After warming up engine, check there is no leakage of engine oil with running engine.

• Be careful not to get burn yourself, as engine oil may be hot.

Prolonged exposure to used engine oil can increase the risk of skin cancer, making it essential to avoid direct skin contact In the event of contact, it is crucial to wash the affected area thoroughly with soap or hand cleaner immediately.

1 Warm up the engine, and check for engine oil leakage from engine components Refer to LU-22, "Inspec- tion".

2 Stop the engine and wait for 10 minutes.

4 Remove drain plug and then drain engine oil.

1 Install drain plug with new drain plug washer Refer to EM-219, "Exploded View".

Be sure to clean drain plug and install with new drain plug washer.

Engine oil pressure : Refer to LU-35, "Engine Oil Pressure".

Tightening torque : Refer to EM-255, "Exploded View".

2 Refill with new engine oil.

Engine oil specification and viscosity: Refer to MA-23, "Fluids and Lubricants".

• When filling engine oil, never pull out oil level gauge.

• The refill capacity depends on the engine oil temperature and drain time Use these specifica- tions for reference only.

• Always use oil level gauge to determine the proper amount of engine oil in engine.

3 Warm up the engine and check area around drain plug and oil filter for engine oil leakage.

4 Stop the engine and wait for 10 minutes.

5 Check the engine oil level Refer to LU-22, "Inspection".

Tightening torque : Refer to EM-219, "Exploded View".

Engine oil capacity : Refer to LU-35, "Periodical Maintenance Specification".

• Oil filter is provided with relief valve Use genuine NISSAN oil filter or equivalent.

• Be careful not to get burned when engine and engine oil may be hot.

• When removing, prepare a shop cloth to absorb any engine oil leakage or spillage.

• Never allow engine oil to adhere to drive belt.

• Completely wipe off any engine oil that adheres to engine and vehicle.

2 Place a pan to catch the engine oil under the lower part of drain hose outlet before removing oil filter.

3 Disconnect fuel filter harness connector

4 Remove mounting nuts of fuel filter and move it aside with its hoses connected Temporarily secure it with a rope to avoid putting load on its hose.

5 Using oil filter wrench [SST: KV10120800] (A), remove oil filter.

• When removing oil filter, prepare waste and a tray (drip pan) to prevent the vehicle from getting soiled by oil drip- ping.

• Thoroughly wipe out engine oil dripped on the engine or vehicle.

1 Remove foreign materials adhering to oil filter installation surface.

2 Apply new engine oil to the oil seal contact surface of new oil fil- ter.

3 Screw oil filter manually until it touches the installation surface, then tighten it by 2/3 turn Or tighten to the specification.

1 Check the engine oil level Refer to LU-22, "Inspection".

2 Start the engine, and check there is no leakage of engine oil.

3 Stop the engine and wait for 10 minutes.

4 Check the engine oil level, and adjust the level Refer to LU-22, "Inspection".

< REMOVAL AND INSTALLATION > [YD25DDTi]

Be careful not to get burn yourself, as engine oil and engine coolant may be hot.

When remove oil cooler only, step 2 is unnecessary.

1 Remove engine undercover front and engine undercover middle.

2 Drain engine coolant from radiator and cylinder block Refer to CO-38, "Draining" and EM-254, "Setting".

Perform this step when removing water hoses and water hose connector.

Gasket Water hose connector Water hose 1

Water hose 2 Connector bolt O-ring

Oil cooler O-ring Oil filter bracket

To cylinder block To heater return pipe

: Always replace after every disassembly.

: Should be lubricated with oil.

< REMOVAL AND INSTALLATION > [YD25DDTi]

3 Remove mounting nuts of fuel filter and move it aside with its hoses connected Temporarily secure it with a rope to avoid putting load on its hose.

4 Disconnect water hoses from oil cooler.

• When removing oil cooler only, pinching water hoses near oil cooler to prevent engine coolant from spilling out.

• Remaining engine coolant in piping will come out Use a tray to collect it.

• Perform this step when the engine is cold.

5 Remove connector bolt, and remove oil cooler.

Never spill engine oil to rubber parts such as drive belt and engine mounting insulator.

6 Remove water hoses and water hose connector, if necessary.

Note the following, and install in the reverse order of removal.

Do not reuse O-rings or washers.

• Check that no foreign objects are adhering to the installation surfaces of oil cooler and oil cooler bracket.

• Tighten the connecting bolt after aligning the stopper on the oil fil- ter bracket side with protrusion of oil cooler

• Install fuel filter , and tighten mounting nuts to the specified torque.

Check oil cooler for cracks Check oil cooler for clogging by blowing through engine coolant inlet If necessary, replace oil cooler.

< REMOVAL AND INSTALLATION > [YD25DDTi]

1 Check the engine oil level and the engine coolant level and add engine oil and engine coolant Refer to LU-22, "Inspection" and CO-38, "Inspection".

2 Start the engine, and check there is no leakage of engine oil or engine coolant.

3 Stop the engine and wait for 10 minutes.

4 Check the engine oil level and the engine coolant level again Refer to LU-22, "Inspection" and CO-38,

< REMOVAL AND INSTALLATION > [YD25DDTi]

1 Remove oil filter Refer to LU-25, "Removal and Installation".

2 Remove oil cooler Refer to LU-27, "Exploded View".

3 Remove starter motor Refer to STR-46, "YD25DDTi : Exploded View".

4 Remove oil level gauge guide Refer to EM-219, "Exploded View".

6 Remove eye-bolt from oil filter bracket side.

Oil filter Oil filter bracket Gasket

Comply with the installation proce- dure when tightening Refer to LU-

To oil cooler To vacuum pump

: Always replace after every disassembly.

< REMOVAL AND INSTALLATION > [YD25DDTi]

1 Check the engine oil level and add engine oil Refer to LU-22, "Inspection".

2 After warming up engine, check there is no leaks of engine oil.

3 Stop engine and wait for 10 minutes.

4 Check the engine oil level and adjust engine oil level Refer to LU-22, "Inspection".

< REMOVAL AND INSTALLATION > [YD25DDTi]

Remove oil pump housing Refer to EM-224, "Exploded View".

Note the following, and install in the reverse order of removal.

• When installing, align crankshaft flat faces with oil pump inner rotor flat faces.

• If oil pump housing is replaced, install timing chain oil jet.

• Oil pump housing and timing chain oil jet must be always replaced in combination.

• If timing chain oil jet is removed from oil pump housing, never reuse both of them.

Oil pump housing Oil pump outer rotor Oil pump inner rotor

Oil pump cover Regulator valve Regulator valve spring

: Should be lubricated with oil.

< REMOVAL AND INSTALLATION > [YD25DDTi]

2 Remove oil pump inner rotor and oil pump outer rotor from oil pump housing.

3 After removing regulator valve plug, remove inner and outer regulator springs and regulator valve.

• Measure the clearance with feeler gauge (A).

Clearance between oil pump outer rotor and oil pump housing

Tip clearance between oil pump inner rotor and oil pump outer rotor (position C)

• Measure the clearance with the feeler gauge (C) and the straight- edge (A).

Side clearance between oil pump inner rotor and oil pump housing

Side clearance between oil pump outer rotor and oil pump housing

• Calculate the clearance between oil pump inner rotor and oil pump housing as follows.

OIL PUMP HOUSING INNER DIAMETER

- Measure the inner diameter of oil pump housing with the inside micrometer (A).

OIL PUMP INNER ROTOR OUTER DIAMETER

- Measure the outer diameter of protruded portion of oil pump inner rotor with a micrometer (A).

< REMOVAL AND INSTALLATION > [YD25DDTi]

OIL PUMP INNER ROTOR TO OIL PUMP HOUSING CLEARANCE

- (Clearance) = (Oil pump housing inner diameter) – (Oil pump inner rotor outer diameter)

• If measured/calculated values are out of the standard, replace oil pump assembly.

Measure the inner diameter of valve hole (oil pump cover) (1) and the outer diameter of regulator valve (2).

(Clearance) = (Valve hole diameter) – (Regulator valve outer diame- ter)

• If the calculated value is out of the standard, replace oil pump assembly.

• Coat regulator valve with new engine oil.

• Check that it falls smoothly into valve hole by its own weight.

Note the following, and assemble in the reverse order of disassembly.

• Install oil pump inner rotor and oil pump outer rotor with the punched marks on the oil pump cover side.

1 Check the engine oil level Refer to LU-22, "Inspection".

2 Start the engine, and check that there is no leakage of engine oil.

3 Stop the engine and wait for 10 minutes.

4 Check the engine oil level and adjust the level Refer to LU-22, "Inspection".

SERVICE DATA AND SPECIFICATIONS (SDS)

< SERVICE DATA AND SPECIFICATIONS (SDS) [YD25DDTi]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Unit: kPa (bar, kg/cm 2 , psi)

Drain and refill With oil filter change 6.9 (6-1/8)

Engine speed Approximate discharge pressure*

Precaution for Supplemental Restraint System

(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-

Precautions for Removing Battery Terminal 5

METER SYSTEM : Component Parts Location 8

METER SYSTEM : Trip Reset Switch (With Color

METER SYSTEM : Illumination Control Switch

ENGINE COOLANT TEMPERATURE GAUGE (WITH COLOR INFORMATION DISPLAY) 28 ENGINE COOLANT TEMPERATURE GAUGE (WITH COLOR INFORMATION DISPLAY) : Sys- tem Description 28

FUEL GAUGE (WITH COLOR INFORMATION DISPLAY) 29 FUEL GAUGE (WITH COLOR INFORMATION DISPLAY) : System Description 29

The article provides a comprehensive overview of various warning and indicator lamps found in vehicles It covers essential lamps such as the 4WD warning lamp, ABS warning lamp, and A/T check indicator lamp, along with critical alerts like the brake warning lamp, charge warning lamp, and differential lock indicator lamp Additionally, it highlights the importance of the door warning lamp, engine oil pressure warning lamp, and front fog lamp indicator Other notable indicators include the fuel filter warning lamp, glow indicator lamp, and high beam indicator lamp, ensuring drivers are informed about their vehicle's status for optimal safety and performance.

WARNING LAMPS/INDICATOR LAMPS : Low

WARNING LAMPS/INDICATOR LAMPS : Mal- function Indicator Lamp (MIL) 47

WARNING LAMPS/INDICATOR LAMPS : Master

WARNING LAMPS/INDICATOR LAMPS : Posi- tion Lamp Indicator Lamp 50

WARNING LAMPS/INDICATOR LAMPS : Seat

Belt Warning Lamp (For Australia) 51

WARNING LAMPS/INDICATOR LAMPS : Securi- ty Indicator Lamp (Turn ON) 53

WARNING LAMPS/INDICATOR LAMPS : Securi- ty Indicator Lamp (Blinks) 55

WARNING LAMPS/INDICATOR LAMPS : SRS

WARNING LAMPS/INDICATOR LAMPS : Turn

WARNING LAMPS/INDICATOR LAMPS : VDC

WARNING LAMPS/INDICATOR LAMPS : VDC

WARNING LAMPS/INDICATOR LAMPS : Wash- er Fluid Warning Lamp 63

WARNING/INDICATOR (ON INFORMATION DIS-

DISPLAY) : Oil Level Warning (with Color Informa- tion Display) 67

DISPLAY) : Oil Level Warning (with Monochrome

METER ILLUMINATION CONTROL : System De- scription 69

METER EFFECT FUNCTION : System Descrip- tion 71

INFORMATION DISPLAY (COLOR) : System De- scription 72

WITH COLOR INFORMATION DISPLAY : Switch Name and Function 83

WITH MONOCHROME INFORMATION DISPLAY 84 WITH MONOCHROME INFORMATION DIS-

PLAY : Switch Name and Function 84

WITH COLOR INFORMATION DISPLAY 85 WITH COLOR INFORMATION DISPLAY : On Board Diagnosis Function 85

WITH MONOCHROME INFORMATION DISPLAY 87 WITH MONOCHROME INFORMATION DIS-

PLAY : On Board Diagnosis Function 87 CONSULT Function 89

COMBINATION METER (WITH INTELLI- GENT KEY SYSTEM) 96 Reference Value 96 Fail-Safe 103 DTC Inspection Priority Chart 104 DTC Index 104

COMBINATION METER (COLOR DISPLAY MODELS WITHOUT INTELLIGENT KEY) 106

EXCEPT BCM FUNCTION 106 EXCEPT BCM FUNCTION : Reference Value 106 EXCEPT BCM FUNCTION : Fail-Safe 113 EXCEPT BCM FUNCTION : DTC Inspection Pri- ority Chart 114 EXCEPT BCM FUNCTION : DTC Index 115

BCM FUNCTION 115 BCM FUNCTION : Reference Value 115 BCM FUNCTION : Fail-safe 136 BCM FUNCTION :

DTC Inspection Priority Chart 137 BCM FUNCTION : DTC Index 137

COMBINATION METER (MONOCHROME DISPLAY MODELS WITHOUT INTELLIGENT KEY) 138

EXCEPT BCM FUNCTION 138 EXCEPT BCM FUNCTION : Reference Value 138 EXCEPT BCM FUNCTION : Fail-Safe 146 EXCEPT BCM FUNCTION : DTC Inspection Pri- ority Chart 147 EXCEPT BCM FUNCTION : DTC Index 147

BCM FUNCTION 148 BCM FUNCTION : Reference Value 148 BCM FUNCTION : Fail-safe 169 BCM FUNCTION :

DTC Inspection Priority Chart 170BCM FUNCTION : DTC Index 170

WITH COLOR INFORMATION DISPLAY : Work flow 216

COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) 234 COMBINATION METER (WITH INTELLIGENT KEY SYSTEM) : Diagnosis Procedure 234

COMBINATION METER (COLOR DISPLAY MOD- ELS WITHOUT INTELLIGENT KEY) 234 COMBINATION METER (COLOR DISPLAY

MODELS WITHOUT INTELLIGENT KEY) : Diag- nosis Procedure 234

COMBINATION METER (MONOCHROME DIS- PLAY MODELS WITHOUT INTELLIGENT KEY) 235 COMBINATION METER (MONOCHROME DIS- PLAY MODELS WITHOUT INTELLIGENT KEY) : Diagnosis Procedure 235

FUEL LEVEL SENSOR SIGNAL CIRCUIT 237

WITH COLOR INFORMATION DISPLAY 237 WITH COLOR INFORMATION DISPLAY : Com- ponent Function Check 237 WITH COLOR INFORMATION DISPLAY :

Diagnosis Procedure 237 WITH COLOR INFORMATION DISPLAY : Com- ponent Inspection 239

WITH MONOCHROME INFORMATION DISPLAY 239 WITH MONOCHROME INFORMATION DIS-

PLAY : Component Function Check 240 WITH MONOCHROME INFORMATION DIS-

PLAY : Diagnosis Procedure 240 WITH MONOCHROME INFORMATION DIS-

VEHICLE SPEED SENSOR SIGNAL CIRCUIT (MODELS WITHOUT ABS) 243 Diagnosis Procedure 243

OIL PRESSURE SWITCH SIGNAL CIRCUIT 244 Component Function Check 244 Diagnosis Procedure 244 Component Inspection 244

STEERING SWITCH SIGNAL A CIRCUIT 246 Component Function Check 246 Diagnosis Procedure 246 Component Inspection 247

STEERING SWITCH SIGNAL B CIRCUIT 248 Component Function Check 248 Diagnosis Procedure 248 Component Inspection 249

ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT 250 Component Function Check 250Diagnosis Procedure 250

WARNING/INDICATOR LAMP REMAINS ON 254

THE SPEEDOMETER DOES NOT MOVE

THE FUEL GAUGE INDICATOR DOES NOT

THE STEERING SWITCHES ARE INOPERA-

THE ILLUMINATION CONTROL SWITCH IS

THE TRIP RESET SWITCH IS INOPERATIVE 259

THE DOOR OPEN WARNING CONTINUES

DISPLAYING, OR DOES NOT DISPLAY 260

THE ENGINE OIL PRESSURE WARNING LAMP DOES NOT TURN ON OR OFF 261 Description 261 Diagnosis Procedure 261

INFORMATION DISPLAY 262 INFORMATION DISPLAY : Description 262

COMBINATION METER 263 Exploded View 263 Removal and Installation 264 Disassembly and Assembly 264

STEERING SWITCH 265 Removal and Installation 265

ILLUMINATION CONTROL SWITCH 266 Exploded View 266 Removal and Installation 266

TRIP RESET SWITCH 267 Exploded View 267 Removal and Installation 267

COMPASS 268 Exploded View 268Removal and Installation 268

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT

The Supplemental Restraint System, which includes components like airbags and seat belt pre-tensioners, significantly enhances safety for drivers and front passengers during specific types of collisions Proper servicing information for the SRS airbag system is essential to ensure its effective operation and safety.

“SEAT BELT” of this Service Manual.

Always observe the following items for preventing accidental activation.

To ensure the proper functioning of the SRS and minimize the risk of personal injury or death during a collision that may trigger airbag deployment, it is essential that all maintenance is conducted by an authorized NISSAN/INFINITI dealer.

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