Automobile training 28 SRS

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SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM RS–1 AIRBAG SYSTEM PRECAUTION CAUTION: • The vehicle is equipped with a Supplemental Restraint System (SRS), which consists of a driver airbag, front passenger airbag, side airbags, curtain shield airbags and front seat belt pretensioners Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing, possibly leading to a serious accident Furthermore, if a mistake is made in servicing the SRS, it is possible that the SRS may fail to operate when required Before performing servicing (including removal or installation of parts, inspection or replacement), be sure to read the following items carefully, then follow the correct procedures as indicated in the repair manual • Wait at least 90 seconds after the ignition switch is turned off and the negative (-) terminal cable is disconnected from the battery before starting the operation (The SRS is equipped with a back-up power source, so if work is started within 90 seconds of disconnecting the negative (-) terminal cable of the battery, the SRS may be deployed) • Do not directly expose the steering pad, front passenger airbag assembly, center airbag sensor assembly, front airbag sensor, front seat inner belt assembly, seat position sensor, occupant classification ECU, front seat side airbag assembly, side airbag sensor, curtain shield airbag assembly, rear airbag sensor or front seat outer belt assembly to hot air or flames NOTICE: • Malfunction symptoms of the SRS are difficult to confirm, so DTCs are the most important source of information when troubleshooting When troubleshooting the SRS, always inspect DTCs before disconnecting the battery • Even in the case of a minor collision when the SRS does not deploy, the following parts should be inspected – Steering pad – Front passenger airbag assembly – Center airbag sensor assembly – Front airbag sensor – Front seat inner belt assembly – Seat position sensor – Occupant classification ECU – Front seat side airbag assembly – Side airbag sensor – Curtain shield airbag assembly – Rear airbag sensor RS RS–2 RS SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM – Front seat outer belt assembly • Before commencing repair work, remove the airbag sensor if any kind of shock is likely to occur to the airbag sensor during the operation • Never use SRS parts from another vehicle When replacing parts, replace them with new ones • Never disassemble or repair any of the following parts in order to reuse them If any of these parts have been dropped, or a defect is found (e.g cracks, dents or any other defects) in any of the housings, brackets or connectors, then replace the part with a new one – Steering pad – Front passenger airbag assembly – Center airbag sensor assembly – Front airbag sensor – Front seat inner belt assembly – Seat position sensor – Occupant classification ECU – Front seat side airbag assembly – Side airbag sensor – Curtain shield airbag assembly – Rear airbag sensor – Front seat outer belt assembly • Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting the electrical circuits • Information labels are attached to the periphery of the SRS components Follow the instructions in the cautions • After work on the SRS is completed, perform the SRS warning light check (See page RS-31) • When the negative (-) terminal cable is disconnected from the battery, the memory will be cleared Therefore make a record of the contents stored in each system before starting work When the work is finished, reset each system as it was before Never use a back-up power supply from outside the vehicle to avoid erasing the memory in any system • If the vehicle is equipped with a mobile communication system, refer to the precautions in the INTRODUCTION section HINT: In the airbag system, the center airbag sensor assembly, front airbag sensor LH and RH, side airbag sensor LH and RH, rear airbag sensor LH and RH are collectively referred to as the airbag sensors HANDLING PRECAUTIONS FOR AIRBAG SENSORS (a) Before starting the following operations, wait for at least 90 seconds after disconnecting the negative () terminal cable from the battery: (1) Replacement of the airbag sensors (2) Adjustment of the front/rear doors of the vehicle equipped with the side airbags and curtain shield airbags (fitting adjustment) SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM RS–3 (b) When connecting or disconnecting the airbag sensor connectors, ensure that each sensor is installed in the vehicle (c) Do not use the airbag sensors which have been dropped during the operation or transportation (d) Do not disassemble the airbag sensors INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT (a) When the airbag has not deployed, confirm the DTCs by checking the SRS warning light If there is any malfunction in the SRS airbag system, perform troubleshooting (b) When any of the airbags have deployed, replace the airbag sensors and check the installation condition RS RS–4 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM SRS CONNECTORS (a) SRS connectors are located as shown in the following illustration RS Passenger Airbag ON/OFF Indicator 11 12 Front Airbag Sensor LH 10 Steering Pad (Driver Side Squib) Spiral Cable To Other Side 20 Front Passenger Airbag Assembly (Front Passenger Side Squib) 19 21 22 Front Airbag Sensor RH 10 Combination Meter 4 13 14 Center Airbag Sensor Assembly ECM 15 16 Main Boby ECU 17 18 H100937E02 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM RS–5 33 Seat Position Sensor RS 34 31 Front Seat Inner Belt Assembly LH 32 29 Side Airbag Sensor LH (*1) 30 27 Curtain Shield Airbag Assembly LH (Driver Side Curtain Shield Squib) (*1) 28 25 Front Seat Side Airbag Assembly LH (Side Squib LH) (*1) 26 To Other Side 23 Front Seat Outer Belt Assembly LH (Front Pretensioner Squib LH) 24 23 Front Seat Outer Belt Assembly RH (Front Pretensioner Squib RH) 24 25 Front Seat Side Airbag Assembly RH (Side Squib RH) (*1) 4 26 27 Curtain Shield Airbag Assembly RH (Curtain Shield Squib RH) (*1) Center Airbag Sensor Assembly 28 29 Side Airbag Sensor RH (*1) 30 35 Occupant Classification ECU 36 *1: w/ Side Airbag Assembly and Curtain Shield Airbag Assembly H100938E02 RS–6 RS SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM No Item Application (1) Terminal Twin-Lock Mechanism Connectors 2, 4, 9, 11, 13, 15, 19, 21, 22, 25, 29, 31, 33 (2) Activation Prevention Mechanism Connectors 2, 4, 6, 8, 20, 22, 24, 26, 28 (3) Half Connection Prevention Mechanism Connectors 9, 19, 21, 26, 29 (4) Connector Position Assurance Mechanism Connector (5) Connector Lock Mechanism (1) Connectors 5, 7, 23, 27 (6) Connector Lock Mechanism (2) Connectors 2, (7) Improper Connection Prevention Lock Mechanism Connectors 1, Spacer Housing H045308E01 (b) All connectors in the SRS except the seat position sensor connector and the occupant classification ECU connector are colored yellow to distinguish them from other connectors Some connectors have special functions, and are specially designed for the SRS These connectors use durable gold-plated terminals, and are placed in the locations shown on the previous page to ensure high reliability (1) Terminal twin-lock mechanism: Each connector is a two-piece component consisting of a housing and a spacer This design enables the terminal to be locked securely by two locking devices (the retainer and the lance) to prevent the terminals from becoming disconnected RS–7 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM (2) Activation prevention mechanism: Each connector contains a short spring plate When the connector is disconnected, the short spring plate creates a short circuit by automatically connecting the positive (+) and negative (-) terminals of the squib When Connector is Connected When Connector is Disconnected Short Spring Plate Short Spring Plate Housing Terminal Contacting Male Terminal Housing Squib Squib Closed Circuit Connectors Short Spring Plate ON Short Spring Plate C127724E01 (3) Half connection prevention mechanism: If the connector is not completely connected, the connector is disconnected by the spring operation so that no continuity exists Stopper Locking Arm Slider Spring Stopper Locking Part Rebounded by Slider (Spring) H101827E01 RS RS–8 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM (4) Connector position assurance mechanism: The CPA (yellow part) slides, which completes the connector engagement, only when the housing lock (white part) is completely engaged RS Housing Lock (White Part) CPA (Yellow Part) H101954E01 (5) Connector lock mechanism (1): Locking the connector lock button connects the connector Lock Button Claw Groove H101828E01 (6) Connector lock mechanism (2): Both the primary lock with holder lances and the secondary lock with a retainer prevent the connectors from becoming disconnected Holder Lance Retainer Holder Retainer Retainer C101082E02 RS–9 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM (7) Improper connection prevention lock mechanism: When connecting the holder, the lever is pushed into the end by rotating around the A axis to lock the holder securely RS A A Lever H101830E01 DISCONNECTION OF CONNECTORS FOR STEERING PAD, FRONT PASSENGER AIRBAG ASSEMBLY (SQUIB SIDE), CURTAIN SHIELD AIRBAG ASSEMBLY AND FRONT SEAT OUTER BELT ASSEMBLY HINT: Tape up the screwdriver tip before use (a) Release the lock button (yellow part) of the connector using a screwdriver RS–10 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM (b) Insert the screwdriver tip between the connector and the base, and then raise the connector (a) RS Lock Button (Yellow Part) (b) Lock Button (Yellow Part) H101832E01 Y CONNECTION OF CONNECTORS FOR STEERING PAD, FRONT PASSENGER AIRBAG ASSEMBLY (SQUIB SIDE), CURTAIN SHIELD AIRBAG ASSEMBLY AND FRONT SEAT OUTER BELT ASSEMBLY (a) Connect the connector RS–450 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Sedan) ON-VEHICLE INSPECTION RS INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check (See page RS38) INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision and Airbag not Deployed) CAUTION: For side airbag sensor removal and installation procedures, see pages RS-450 and RS-451, and carefully follow the correct procedure (a) Perform a diagnostic system check (See page RS38) (b) When the center pillar of the vehicle or its periphery is damaged, check whether there is any damage to the side airbag sensor If there are any defects, such as those mentioned below, replace the side airbag sensor with a new one: • Any cracks, dents or chips in the case • Any cracks or other damage to the connector • Peeling of the label or damage to the serial number INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision) CAUTION: For side airbag sensor removal and installation procedures, see pages RS-450 and RS-451, and carefully follow the correct procedure (a) Replace the side airbag sensor SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Sedan) RS–451 REMOVAL CAUTION: Some of these service operations affect the SRS airbag system Read the precautionary notices concerning the SRS airbag system before servicing (See page RS-1) HINT: The procedure described below is for the RH side Use the same procedure for both the RH and LH sides, unless otherwise specified REMOVE FRONT DOOR SCUFF PLATE RH (See page IR-14) REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-15) REMOVE REAR DOOR SCUFF PLATE RH (See page IR-15) REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-15) REMOVE CENTER PILLAR LOWER GARNISH RH (See page IR-16) REMOVE SIDE AIRBAG SENSOR CAUTION: Confirm that the negative battery terminal is disconnected before performing the operation Even an impact to only the airbag sensor will cause the airbag to deploy (a) Slide the outer housing and detach the airbag connector Outer Housing B106572E01 RS RS–452 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Sedan) (b) Remove the bolt, disengage the hook and remove the side airbag sensor RS B106573E01 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Sedan) RS–453 INSTALLATION CAUTION: Some of these service operations affect the SRS airbag system Read the precautionary notices concerning the SRS airbag system before servicing (See page RS-1) HINT: The procedure described below is for the RH side Use the same procedure for both the RH and LH sides, unless otherwise specified INSTALL SIDE AIRBAG SENSOR (a) Confirm that the ignition switch is turned to off (b) Confirm that the negative battery terminal is detached CAUTION: Confirm that the negative battery terminal is disconnected before performing the operation Even an impact to only the airbag sensor will cause the airbag to deploy (c) Insert the hook into the body hole and install the airbag sensor with the bolt Torque: 9.0 N*m (90 kgf*cm, 80 in.*lbf) NOTICE: • Do not use a side airbag sensor that has been dropped • Do not subject the side airbag sensor to any impact or force (d) Confirm that there is no looseness by shaking the side airbag sensor B106573E01 (e) Connect the airbag connector INSTALL CENTER PILLAR LOWER GARNISH RH (See page IR-32) INSTALL REAR DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-33) INSTALL REAR DOOR SCUFF PLATE RH (See page IR-34) INSTALL FRONT DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-34) INSTALL FRONT DOOR SCUFF PLATE RH (See page IR-34) CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) INSPECT SRS WARNING LIGHT (See page RS-31) Outer Housing B106574E01 RS SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) RS–453 SIDE AIRBAG SENSOR (for Door) SUPPLEMENTAL RESTRAINT SYSTEM RESTRAINTS COMPONENTS RS SIDE AIRBAG SENSOR AIRBAG CONNECTOR 9.0 (90, 80 in.*lbf) REAR DOOR OPENING TRIM WEATHERSTRIP RH FRONT DOOR OPENING TRIM WEATHERSTRIP RH REAR DOOR SCUFF PLATE RH CENTER PILLAR LOWER GARNISH RH FRONT DOOR SCUFF PLATE RH N*m (kgf*cm, ft*lbf) : Specified torque B106569E01 RS–454 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) ON-VEHICLE INSPECTION RS INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check (See page RS38) INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision and Airbag not Deployed) CAUTION: For side airbag sensor removal and installation procedures, see pages RS-454 and RS-455, and carefully follow the correct procedure (a) Perform a diagnostic system check (See page RS38) (b) When the center pillar of the vehicle or its periphery is damaged, check whether there is any damage to the side airbag sensor If there are any defects, such as those mentioned below, replace the side airbag sensor with a new one: • Any cracks, dents or chips in the case • Any cracks or other damage to the connector • Peeling of the label or damage to the serial number INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision) CAUTION: For side airbag sensor removal and installation procedures, see pages RS-454 and RS-455, and carefully follow the correct procedure (a) Replace the side airbag sensor SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) RS–455 REMOVAL CAUTION: Some of the these service operations affect the SRS airbag system Read the precautionary notices concerning the SRS airbag system before servicing (See page RS-1) HINT: The procedure described below is for the RH side Use the same procedure for both the RH and LH sides, unless otherwise specified DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE FRONT DOOR SCUFF PLATE RH (See page IR-49) REMOVE REAR DOOR SCUFF PLATE RH (See page IR-51) REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-50) REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-51) REMOVE CENTER PILLAR LOWER GARNISH RH (See page IR-55) REMOVE SIDE AIRBAG SENSOR CAUTION: Confirm that the negative battery terminal is disconnected before performing the operation Even an impact to only the airbag sensor will cause the airbag to deploy (a) Slide the outer housing and detach the airbag connector Outer Housing B106572E01 RS RS–456 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) (b) Remove the bolt, disengage the hook and remove the side airbag sensor RS B106573E01 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) RS–457 INSTALLATION CAUTION: Some of these service operations affect the SRS airbag system Read the precautionary notices concerning the SRS airbag system before servicing HINT: The procedure described below is for the RH side Use the same procedure for both the RH and LH sides, unless otherwise specified INSTALL SIDE AIRBAG SENSOR (a) Confirm that the ignition switch is turned to OFF (b) Confirm that the negative battery terminal is detached CAUTION: • Confirm that the negative battery terminal is disconnected before performing the operation Even an impact to only the airbag sensor will cause the airbag to deploy (c) Insert the hook into the body hole and install the airbag sensor with the bolt Torque: 9.0 N*m (90 kgf*cm, 80 ft.*lbf) NOTICE: • Do not use a side airbag sensor that has been dropped • Do not subject the side airbag sensor to any impact or force (d) Confirm that there is no looseness by shaking the side airbag sensor B106573E01 (e) Connect the airbag connector INSTALL CENTER PILLAR LOWER GARNISH RH (See page IR-76) INSTALL REAR DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-80) INSTALL FRONT DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-81) INSTALL REAR DOOR SCUFF PLATE RH (See page IR-80) INSTALL FRONT DOOR SCUFF PLATE RH (See page IR-82) CONNECT CABLE TO NEGATIVE BATTERY TERMINAL Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) INSPECT SRS WARNING LIGHT (See page RS-31) Outer Housing B106574E01 RS SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) RS–457 SIDE AIRBAG SENSOR (for Door) SUPPLEMENTAL RESTRAINT SYSTEM RESTRAINTS COMPONENTS RS PACKAGE TRAY TRIM PANEL ASSEMBLY DECK BOARD SUB-ASSEMBLY DECK FLOOR BOX RH DECK FLOOR BOX LH B114273E01 RS–458 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) for 60/40 Split Seat Type: RS REAR SEAT ASSEMBLY RH NO REAR SEAT LEG COVER 37 (375, 27) REAR SEAT ASSEMBLY LH x6 NO REAR SEAT LEG COVER NO REAR SEAT LEG COVER 37 (375, 27) x7 for Hold Down Seat Type: REAR SEATBACK ASSEMBLY REAR SEAT CUSHION COVER PAD SUB-ASSEMBLY 37 (375, 27) x4 N*m (kgf*cm, ft*lbf) : Specified torque B121713E03 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) RS–459 RS SIDE AIRBAG SENSOR 9.0 (90, 80 in.*lbf) AIRBAG CONNECTOR FRONT DOOR OPENING TRIM WEATHERSTRIP RH FRONT QUARTER TRIM PANEL ASSEMBLY RH FRONT DOOR SCUFF PLATE RH N*m (kgf*cm, ft*lbf) : Specified torque C119849E01 RS–460 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) ON-VEHICLE INSPECTION RS INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check (See page RS38) INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision and Airbag not Deployed) CAUTION: For side airbag sensor removal and installation procedures, see pages RS-460 and RS-462, and carefully follow the correct procedure (a) Perform a diagnostic system check (See page RS38) (b) When the center pillar of the vehicle or its periphery is damaged, check whether there is any damage to the side airbag sensor If there are any defects, such as those mentioned below, replace the side airbag sensor with a new one: • Any cracks, dents or chips in the case • Any cracks or other damage to the connector • Peeling of the label or damage to the serial number INSPECT SIDE AIRBAG SENSOR ASSEMBLY (for Vehicle Involved in Collision) CAUTION: For side airbag sensor removal and installation procedures, see pages RS-460 and RS-462, and carefully follow the correct procedure (a) Replace the side airbag sensor SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) RS–461 REMOVAL CAUTION: Some of the these service operations affect the SRS airbag system Read the precautionary notices concerning the SRS airbag system before servicing (See page RS-1) NOTICE: Always use "Torx" socket wrench E10 when removing the rear seat HINT: The procedure described below is for the RH side Use the same procedure for both the RH and LH sides, unless otherwise specified DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE PACKAGE TRAY TRIM PANEL ASSEMBLY (See page IR-48) REMOVE DECK BOARD SUB-ASSEMBLY (See page IR-48) REMOVE DECK FLOOR BOX RH (See page IR-48) REMOVE DECK FLOOR BOX LH (See page IR-48) REMOVE NO REAR SEAT LEG COVER (for 60/40 Split Seat Type) (See page IR-96) REMOVE NO REAR SEAT LEG COVER (See page SE-70) REMOVE REAR SEAT ASSEMBLY RH (for 60/40 Split Seat Type) (See page SE-89) REMOVE REAR SEAT ASSEMBLY LH (for 60/40 Split Seat Type) (See page SE-71) 10 REMOVE REAR SEAT CUSHION COVER PAD SUBASSEMBLY (for Hold Down Seat Type) (See page SE114) 11 REMOVE REAR SEATBACK ASSEMBLY (for Hold Down Seat Type) (See page SE-115) 12 REMOVE FRONT DOOR SCUFF PLATE RH (See page IR-97) 13 REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP RH (See page IR-97) 14 REMOVE FRONT QUARTER TRIM PANEL ASSEMBLY RH (See page IR-97) 15 REMOVE SIDE AIRBAG SENSOR CAUTION: Confirm that the negative battery terminal is disconnected before performing the operation Even an impact to only the airbag sensor will cause the airbag to deploy RS RS–462 SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR (for Door) (a) Slide the outer housing and detach the airbag connector RS Outer Housing B106572E01 (b) Remove the bolt, disengage the hook and remove the side airbag sensor B106573E01 ... comes on SRS Warning Light Remains ON RS-196 The SRS warning light always comes on even when no DTSs are output SRS Warning Light Remains ON RS-196 With the ignition switch on, the SRS warning... is complete H100828E02 RS RS–20 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM PARTS LOCATION HATCHBACK: RS COMBINATION METER w/o Tachometer: w/ Tachometer: SRS WARNING LIGHT SRS WARNING LIGHT... Meter (SRS Warning Light) CAN Center Airbag Sensor Assembly Curtain Shield Airbag ECM H101946E01 RS 28 SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM Component RS MAIN COMPONENTS Description SRS