WORK NOTICES AND PRECAUTIONS PRECAUTIONS FOR SRS AIRBAG SYSTEM


  1. HANDLING OF A VEHICLE THAT HAS BEEN DAMAGED IN A COLLISION


    1. Refer to the LEXUS Repair Manual for the SRS airbag system inspection procedures.

    2. If impacts are likely to occur to the front airbag sensors, side airbag sensor assemblies, No. 2 side airbag sensor assemblies, rear airbag sensors, door side airbag sensors, seat position airbag sensor, or airbag ECU assembly remove each sensor as necessary beforehand.

    3. Do not allow the front airbag sensors, side airbag sensor assemblies, No. 2 side airbag sensor assemblies, rear airbag sensors, door side airbag sensors, seat position airbag sensor, or airbag ECU assembly to become heated to high temperatures.

    4. Check the wire harnesses and connectors for damage and/or melting, as some areas of the airbags and seat belt pretensioners may heat up to several hundred degrees when they operate.

  2. PRECAUTIONS FOR USING ELECTRIC WELDER


    1. Check the Diagnostic Trouble Codes (DTCs).


      1. If one or more DTCs are displayed:


        • Disconnect the negative (-) terminal cable from the battery.

        • Disconnect all the malfunctioning circuit connectors.

        • Disconnect the airbag ECU assembly connector.

      2. If DTCs are NOT displayed:


        • Inspect for damage to the electric wiring harnesses and connectors.

        • Disconnect the negative (-) terminal cable from the battery.

        • Disconnect the airbag ECU assembly connector.

  3. DOOR SIDE AIRBAG SENSOR (PRESSURE SENSOR) DESCRIPTION


    1. A door side airbag sensor is installed to the center of the front door.

    2. The sensor detects pressure changes between the door outer and door inner according to deformation of the door panel.

    3. The door side airbag sensor (pressure sensor) and side airbag sensor (G sensor) perform ignition judgement using AND circuits for improved side airbag deployment.

  4. PRECAUTIONS WHEN REPAIRING BODY

    B003FYMC01
    *1 Door side airbag sensor
    *2 Air inlet

    1. Ensure the front door outer and door inner are airtight.

    2. Apply masking tape to the door side airbag sensor to prevent the entry of foreign matter.

      Note


      • Decreased airtightness between the front door outer and door inner may affect detection performance.

      • Use large, clearly visible pieces of masking tape to prevent tape from being left on the sensor after the procedure.

      PRECAUTION INSPECTION/PROCEDURE
      Airtightness between door outer and inner Parts important for airtightness Speaker

      • If there are gaps in the seal surface or the cone is damaged, replace it with a new one.
      Belt moulding

      • If there are gaps in the seal surface or the lip is worn or cracked, replace it with a new one.

      • Do not reuse a removed belt moulding.
      Weatherstrip INN

      • If there are gaps in the seal surface or the lip is worn or cracked, replace it with a new one.
      Front door

      • If a door panel has holes or cracks, repair or replace it. (If damage has spread to the impact beam, replace it with a new one)

      • If the installation areas of parts important for airtightness are damaged or deformed, repair or replace them.
      Prevention of foreign matter entry into sensor Painting and grinding with service hole cover removed

      • Before performing work, apply masking tape to the air inlet (B) of the door side airbag sensor to prevent the entry of foreign matter. (such as paint, dust and pieces of glass)

      • Keep the spray or vacuum cleaner nozzle away from the sensor. Otherwise, it may be damaged.
      Applying anti-rust agents (wax)
      Removing pieces of glass from inside door panel

  5. LOCATION OF PARTS IMPORTANT FOR AIRTIGHTNESS

    B003G94C03
    *A for 12 Speakers *B for 24 Speakers
    *1 FRONT DOOR GLASS INNER WEATHERSTRIP LH *2 FRONT DOOR PANEL PROTECTOR LH
    *3 FRONT DOOR SERVICE HOLE COVER LH *4 FRONT DOOR TRIM COVER LH
    *5 FRONT DOOR VENT SEAL LH *6 FRONT MULTIPLEX NETWORK DOOR ECU LH
    *7 FRONT NO. 1 SPEAKER ASSEMBLY *8 OUTER MIRROR INSTALL HOLE COVER LH
    *9 UPPER DOOR FRAME GARNISH LH *10 PLUG HOLE
    *11 SERVICE HOLE COVER CLIP - -
    ● Non-reusable part - -
    B003G05C03
    *1 DOOR SIDE AIR BAG SENSOR LH *2 FRONT DOOR ARMREST SET BRACKET LH
    *3 FRONT DOOR BELT MOULDING LH *4 FRONT DOOR FRONT WINDOW FRAME MOULDING LH
    *5 FRONT DOOR NO. 2 WEATHERSTRIP LH *6 FRONT DOOR NO. 3 WEATHERSTRIP LH
    *7 FRONT DOOR REAR BELT MOULDING END COVER LH *8 FRONT DOOR UPPER WINDOW FRAME MOULDING LH
    *9 FRONT DOOR WINDOW FRAME MOULDING LH(CENTER PILLAR SIDE) *10 OUTER REAR VIEW MIRROR ASSEMBLY LH
    *11 RIVET *12 SCREW GROMMET
    B003FXP Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf) ● Non-reusable part
    B003G5X N*m (kgf*cm, ft.*lbf): Specified torque - -

  6. PARTS LOCATION

    B003G67C01
    *A for LHD *B for RHD
    *C for Fixed Seat Type *D for Power Seat
    *1 FRONT AIRBAG SENSOR RH *2 FRONT AIRBAG SENSOR LH
    *3 NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH *4 NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH
    *5 SIDE AIRBAG SENSOR ASSEMBLY RH *6 DOOR SIDE AIRBAG SENSOR LH
    *7 REAR AIRBAG SENSOR RH *8 REAR AIRBAG SENSOR LH
    *9 DOOR SIDE AIRBAG SENSOR RH *10 SIDE AIRBAG SENSOR ASSEMBLY LH
    *11 FRONT SEAT INNER BELT ASSEMBLY RH *12 FRONT SEAT INNER BELT ASSEMBLY LH
    *13 SEAT POSITION AIRBAG SENSOR *14 REAR SEAT INNER BELT ASSEMBLY LH
    *15 REAR SEAT INNER WITH CENTER BELT ASSEMBLY RH *16 REAR SEAT INNER BELT ASSEMBLY RH
    B003G1YC01
    *1 FRONT SEAT OUTER BELT ASSEMBLY RH *2 FRONT SEAT OUTER BELT ASSEMBLY LH
    *3 CURTAIN SHIELD AIRBAG ASSEMBLY RH *4 CURTAIN SHIELD AIRBAG ASSEMBLY LH
    *5 REAR SEAT OUTER BELT ASSEMBLY RH *6 REAR SEAT OUTER BELT ASSEMBLY LH
    *7 FRONT SEAT AIRBAG ASSEMBLY RH *8 FRONT SEAT AIRBAG ASSEMBLY LH
    *9 REAR SEAT AIRBAG ASSEMBLY RH *10 REAR SEAT AIRBAG ASSEMBLY LH
    *11 REAR SEAT CUSHION AIRBAG ASSEMBLY RH *12 REAR SEAT CUSHION AIRBAG ASSEMBLY LH
    B003G26C01
    *A for LHD *B w/ Telematics System
    *C w/ Airbag Cutoff Switch *D w/ Occupant Classification System
    *E w/ Passenger Airbag ON/OFF Indicator - -
    *1 SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY *2 INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY
    *3 HORN BUTTON ASSEMBLY *4 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY
    *5 LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY *6 AIRBAG ECU ASSEMBLY
    *7

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - METER FUSE

    		 *8 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
    *9

    PASSENGER SIDE JUNCTION BLOCK ASSEMBLY

    - A/BAG FUSE

    		 *10 COMBINATION METER ASSEMBLY
    *11 TELEPHONE TRANSCEIVER ASSEMBLY *12 PEDESTRIAN DETECTION ECU ASSEMBLY
    *13 AIRBAG CUTOFF SWITCH CYLINDER SUB-ASSEMBLY *14

    TELLTALE LIGHT ASSEMBLY

    - PASSENGER AIRBAG ON/OFF INDICATOR
    *15 DLC3 *16 HYBRID VEHICLE CONTROL ECU ASSEMBLY
    *17 OCCUPANT DETECTION ECU - -
    B003G9ZC01
    *A for RHD *B w/ Airbag Cutoff Switch
    *1 SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY *2 INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY
    *3 HORN BUTTON ASSEMBLY *4 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY
    *5 LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY *6 AIRBAG ECU ASSEMBLY
    *7

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - METER FUSE

    		 *8 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
    *9

    PASSENGER SIDE JUNCTION BLOCK ASSEMBLY

    - A/BAG FUSE

    		 *10 COMBINATION METER ASSEMBLY
    *11 AIRBAG CUTOFF SWITCH CYLINDER SUB-ASSEMBLY *12 PEDESTRIAN DETECTION ECU ASSEMBLY
    *13

    TELLTALE LIGHT ASSEMBLY

    - PASSENGER AIRBAG ON/OFF INDICATOR

    		 *14 DLC3
    *15 HYBRID VEHICLE CONTROL ECU ASSEMBLY - -