HỆ THỐNG CHUẨN ĐOÁN LỖI TRÊN XE LAND CRUISER ĐỜI 1998-2007
F17763 EXI WT A43 A43 IX1 F15 Cowl Side J/B RH Cowl Side J/B RH Cowl Side J/B RH Cowl Side J/B LH I18 Ignition SW Engine Room J/B Combination Meter ABS & BA & TRAC & VSC ECU SB D4 Detection SW (Center Diff. Lock) 2 W-B P-B SB SB SB MET 1 2 47 3E 3Q 56 3 3Q 3B 3Q 3B J4 J/C B-R B-R A A P-B L-R W-R AM2 IG2 76 41 10 2E 2A 1 9 1C 1B 2 B-G EC FL Block Battery MAIN EC BR W-R 8 IX1 VSC OFF 17 C13 C12 C15 1 10 3 7 1426 AM2 DI-624 -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 817A uthor: Date: 2004 LAND CRUISER (RM1071U) DTC Always ON Malfunction in ECU VSC TRAC Warning Light Circuit CIRCUIT DESCRIPTION Always ON There is a malfunction in the ECU internal circuit. L Power source circuit L Skid control ECU L VSC TRAC warning light circuit HINT: If the fail safe function is activated in the VSC system, ”VSC OFF” indicator light lights up. WIRING DIAGRAM DICA4-01 -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-625 818A uthor: Date: 2004 LAND CRUISER (RM1071U) INSPECTION PROCEDURE 1 Check that the ECU connectors are securely connected to the ECU. NO Connect the connector to the ECU. YES 2 Is DTC output for VSC? Check the DTC on page DI-505 . YES Repair circuit indicated by the output code. NO 3 Does VSC TRAC warning light go off? YES Check for open or short circuit in harness and connector between ECU-IG fuse and ECU (See page IN-36 ). NO 4 Check battery positive voltage. PREPARATION: Start the engine. CHECK: Check the battery positive voltage. OK: Voltage: 10 to 16 V NG Check and repair the charging system. OK DI-626 -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 819A uthor: Date: 2004 LAND CRUISER (RM1071U) 5 Check operation of the VSC TRAC warning light. In case of using the hand-held tester: PREPARATION: (a) Connect the hand-held tester to the DLC3. (b) Turn the ignition switch ON and push the hand-held tester main switch ON. (c) Select the ACTIVE TEST mode on the hand-held tester. CHECK: Check that ”ON” and ”OFF” of the VSC TRAC warning light can be shown on the combination meter on the hand-held tester. In case of not using the hand-held tester: PREPARATION: (a) Turn the ignition switch OFF. (b) Disconnect the connector from the skid control ECU. (c) Turn the ignition switch ON. CHECK: Check that the VSC TRAC warning light goes off. NG Check and replace combination meter (See page BE-2 ). OK 6 Check for short circuit in harness and connector between combination meter and skid control ECU, combination meter and DLC1 (See page IN-36 ). NG Repair or replace harness or connector. OK Check and replace skid control ECU. F17718 F18533 ABS & BA & TRAC & VSC ECU Engine Room J/B Combination Meter Cowl Side J/B RH Cowl Side J/B LH I18 Ignition SW Cowl Side J/B RH WA 1 A42 4 3A 5 3Q 12 C12 41 2E 10 2A 1B 91 1C AM2 W-R B-R C12 C15 EC SB BR 8 IX1 3Q SB 7 MET 4 3E B-R B-G FL Block SB R-L W-R 76 AM2 IG2 J4 J/C AA 2 F15 Battery 1 10 MAIN ABS -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-627 820A uthor: Date: 2004 LAND CRUISER (RM1071U) ABS Warning Light Circuit CIRCUIT DESCRIPTION If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At this time, the ECU records a DTC in memory. Connect terminals Tc and E 1 of the DLC1 or Tc and CG of DLC3 to make the ABS warning light blink and output the DTC. WIRING DIAGRAM DICA5-02 DI-628 -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 821A uthor: Date: 2004 LAND CRUISER (RM1071U) INSPECTION PROCEDURE HINT: Troubleshoot in accordance with the table below for each trouble symptom. ABS warning light does not light up * 1 ABS warning light remains on * 2 * 1 : Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not using the hand-held tester. * 2 : After inspection with step 4, start the inspection from step 5 in case of using the hand-held tester and start from step 6 in case of not using hand-held tester. 1 Check operation of the ABS warning light. PREPARATION: (a) Connect the hand-held tester to the DLC3. (b) Turn the ignition switch ON and push the hand-held tester main switch ON. (c) Select the ACTIVE TEST mode on the hand-held tester. CHECK: Check that ”ON” and ”OFF” of the ABS warning light can be shown on the combination meter on the hand- held tester. OK Check and replace skid control ECU. NG 2 Does the warning lights other than ABS warning light come on? YES Repair ABS warning light bulb or combination meter assembly. NO F00044 1 2 3 4 (+) (-) Continuity 12 34 1 2 3 4 Open Continuity -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-629 822A uthor: Date: 2004 LAND CRUISER (RM1071U) 3 Check IG1 No. 1 relay. PREPARATION: Remove the IG1 No. 1 relay from the engine room J/B. CHECK: Check continuity between the IG1 No. 1 relay terminals listed in the table below. OK: Terminals 3 and 4 Continuity Terminals 1 and 2 Open CHECK: (a) Apply battery positive voltage between terminals 3 and 4. (b) Check continuity between terminals. OK: Terminals 1 and 2 Continuity NG Replace IG1 No. 1 relay. OK Check for open circuit in harness and connector between IG1 No. 1 relay and combination meter (See page IN-36 ). DI-630 -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 823A uthor: Date: 2004 LAND CRUISER (RM1071U) 4 Check that the ECU connectors are securely connected to the ECU. NO Connect the connector to the ECU. YES 5 Check operation of the ABS warning light (See step 1). OK Check and replace skid control ECU. NG 6 Is DTC output? Check the DTC on page DI-505 . YES Repair circuit indicated by the output code. NO 7 Check for short circuit in harness and connector between ABS warning light and skid control ECU (See page IN-36 ). NG Repair or replace harness or connector. OK Check and repair skid control ECU. F17750 F18532 ABS & BA & TRAC & VSC ECU Cowl Side J/B RH Combination Meter Cowl Side J/B RH Engine Room J/B Cowl Side J/B LH Cowl Side J/B LH I18 Ignition SW FL Block Cowl Side J/B LH WA IG2 A42 A44 R-L 3A 4 3Q 5 SB C12 12 ABS 10 C12 C15 1 SB IX1 8 BR EC IF IF EE W-B 3 2A 2B 13 A41 6 A41 31 A42 8 A42 17 A42 6 GND4 GND3 GND1 GND2 3Q 7 3B 22 MET IGN 3E 4 B-R A A J4 J/C B-R 6 4 7 2 AM2 IG2 AM1 IG1 B-W B-R L-B 2E 37 2B 18 2E 39 ECU-IG1 2 3 5 1 IG1 No.2 Relay 2C 1 B-G F16 1 B-G F15 2 J/B No.2 ALT MAIN Battery W-R 2A 10 2E 41 1C 1 AM2 1B 9 B-R SB AM1 1 22 IG1 W-B W-B W-B W-B W-B W-R W-B W-B -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-621 814A uthor: Date: 2004 LAND CRUISER (RM1071U) DTC Always ON Malfunction in ECU CIRCUIT DESCRIPTION DTC No. DTC Detecting Condition Trouble Area Always ON Either of the following 1. or 2. is detected: 1. The ECU connectors are disconnected from the ECU. 2. There is a malfunction in the ECU internal circuit. L Battery L IC regulator L Power source circuit L Skid control ECU HINT: The hand-held tester may not be used when the ECU is abnormal. WIRING DIAGRAM DICA3-01 DI-622 -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM 815A uthor: Date: 2004 LAND CRUISER (RM1071U) INSPECTION PROCEDURE 1 Check that the ECU connectors are securely connected to the ECU. NO Connect the connector to the ECU. YES 2 Is DTC output? Check the DTC on page DI-505 . YES Repair circuit indicated by the output code . NO 3 Does ABS warning light go off? YES Check for open or short circuit in harness and connector between ECU-IG fuse and ECU (See page IN-36 ). NO 4 Check battery positive voltage. PREPARATION: Start the engine. CHECK: Check the battery positive voltage. OK: Voltage: 10 to 14 V NG Check and repair the charging system. OK -DIAGNOSTICS ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-623 816A uthor: Date: 2004 LAND CRUISER (RM1071U) 5 Check operation of the ABS warning light. In case of using the hand-held tester: PREPARATION: (a) Connect the hand-held tester to the DLC3. (b) Turn the ignition switch ON and push the hand-held tester main switch ON. (c) Select the ACTIVE TEST mode on the hand-held tester. CHECK: Check that ”ON” and ”OFF” of the ABS warning light can be shown on the combination meter by the hand- held tester. In case of not using the hand-held tester: PREPARATION: (a) Turn the ignition switch OFF. (b) Disconnect the connector from the skid control ECU. (c) Using a service wire, connect terminal WA of the skid control ECU harness side connector and body ground. (d) Turn the ignition switch ON. CHECK: Check that the ABS warning goes off. OK Check and replace combination meter (See page BE-2 ). NG 6 Check for short circuit in harness and connector between combination meter and skid control ECU, combination meter and DLC1 (See page IN-36 ). NG Repair or replace harness or connector. OK Check and replace skid control ECU. [...]... defective 2004 LAND CRUISER (RM1071U) Author : Date : 726 DI-534 6 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM Check for open circuit in harness and connector between AST of hydraulic brake booster and AST of skid control ECU (See page IN-36 ) NG Repair or replace harness or connector OK Replace hydraulic brake booster or skid control ECU 2004 LAND CRUISER (RM1071U)... harness and connector between skid control ECU and brake warning and VSC buzzer (See page IN-36 ) NG Repair or replace harness or connector OK Check and replace skid control ECU 2004 LAND CRUISER (RM1071U) Author : Date : 843 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-635 DICA7-02 BRAKE Warning Light Circuit CIRCUIT DESCRIPTION The BRAKE warning light lights up while... LBL A40 ABS & BA & TRAC & VSC ECU IG2 J4 J/C B-R 6 A A 13 A42 PKB R-W R-W Engine Room J/B 9 1B AM2 1 1C F15 FL Block B-G 2 BR MAIN 1 Battery P8 Parking Brake SW EC F16083 2004 LAND CRUISER (RM1071U) Author : Date : 828 DI-636 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM INSPECTION PROCEDURE 1 Check parking brake switch circuit (See page BE-63 ) NG Repair or replace... switch circuit YES Repair circuit indicated by the output code OK 3 Is DTC output for ABS? NO 4 Do the warning lights other than BRAKE warning light come on? YES Go to step 6 NO 2004 LAND CRUISER (RM1071U) Author : Date : 829 DIAGNOSTICS 5 - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-637 Check IG1 No 1 relay 2 1 4 PREPARATION: Remove the IG1 No 1 relay from the engine room J/B... between IG1 No 1 relay and combination meter (See page IN-36 ) 6 Check that the ECU connectors are securely connected to the ECU NO Connect the connector to the ECU YES 2004 LAND CRUISER (RM1071U) Author : Date : 830 DI-638 7 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM Check BRAKE warning light Check if that the open circuit in the combination meter circuit (See page... in harness and connector between brake warning light and skid control ECU (See page IN-36 ) NG Repair or replace harness or connector OK Check and repair skid control ECU 2004 LAND CRUISER (RM1071U) Author : Date : 831 DI-528 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DIC95-01 DTC C0226 / 21 - C0256 / 24 ABS Solenoid Circuit CIRCUIT DESCRIPTION This solenoid goes... Hydraulic brake booster L SRRH or SRRR circuit C0256 / 24 Open or short in SRLH or SRLR circuit continues for 0.015 sec or more L Hydraulic brake booster L SRLH or SRLR circuit 2004 LAND CRUISER (RM1071U) Author : Date : 721 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-529 WIRING DIAGRAM ABS & BA & TRAC & VSC Actuator 8 SFLH A39 ABS & BA & TRAC & VSC ECU 21 A41 SFLH... SR 4 L-B BS A37 Engine Room R/B ABS SOL Relay 1 1 3 6 1 1 4 FL Block Batter MAIN 2 F15 B-R 1 A41 R1+ P 1 B-R Engine Room J/B and Engine Room R/B ABS No.1 1 1C 1 2 1 F17705 2004 LAND CRUISER (RM1071U) Author : Date : 722 DI-530 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM INSPECTION PROCEDURE 1 Check hydraulic brake booster solenoid A45 LOCK 3 2 1 4 A43 7 10 9 8 4 F02855... connector OK If the same code is still output after the DTC is deleted, check the contact condition of each connection If the connections are normal, the ECU may be defective 2004 LAND CRUISER (RM1071U) Author : Date : 723 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM DI-531 DIC98-02 DTC C0278 / 11, C0279 / 12 ABS Solenoid Relay Circuit CIRCUIT DESCRIPTION This relay... operation sound of the ABS solenoid relay when operating it with the hand-held tester OK: The operation sound of the ABS solenoid relay should be heard OK Go to step 6 NG 2004 LAND CRUISER (RM1071U) Author : Date : 724 DI-532 2 DIAGNOSTICS - ABS & VEHICLE STABILITY CONTROL (VSC) & BRAKE ASSIST (BA) SYSTEM Check voltage between terminals 1 and 2 of engine room J/B (for ABS solenoid relay) 1 PREPARATION: . IG2 AM1 IG1 B-W B-R L-B 2E 37 2B 18 2E 39 ECU-IG1 2 3 5 1 IG1 No.2 Relay 2C 1 B-G F16 1 B-G F15 2 J/B No.2 ALT MAIN Battery W-R 2A 10 2E 41 1C 1 AM2 1B 9 B-R SB AM1 1 22 IG1 W-B W-B W-B W-B W-B W-R W-B W-B -DIAGNOSTICS. ECU SFLH SFLR SFRH SFRR SRLH SRLR SRRH SRRR AST A39 8 A41 21 A44 16 A39 A39 A39 A39 A39 A39 A39 A38 A37 A41 A41 A41 A41 A41 7 10 9 4 3 2 1 1 4 7 8 7 1 9 8 6 19 1 A44 A44 A44 A44 Y B-Y LG B-W R-W R-Y G-Y P B-R L-B B-O R-G W 1 1 1 1 1 1 1 1 3 6 4 2 Engine Room J/B and Engine Room R/B 1C B-R F15 2 SR R1+ -DIAGNOSTICS ABS & VEHICLE STABILITY. (Center Diff. Lock) 2 W-B P-B SB SB SB MET 1 2 47 3E 3Q 56 3 3Q 3B 3Q 3B J4 J/C B-R B-R A A P-B L-R W-R AM2 IG2 76 41 10 2E 2A 1 9 1C 1B 2 B-G EC FL Block Battery MAIN EC BR W-R 8 IX1 VSC OFF 17 C13 C12 C15 1 10 3 7 1426 AM2 DI-624 -DIAGNOSTICS