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 No. 1 airbag sensors, side No. 2 airbag sensors, door side airbag sensors, or airbag sensor assembly remove each sensor as necessary beforehand.

    3. Do not allow the front airbag sensors, side No. 1 airbag sensors, side No. 2 airbag sensors, door side airbag sensors, or airbag sensor 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 sensor 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 sensor 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

    B00834WC01
    *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

    B0083AHC01
    *A for Front Passenger Side *B for Driver Side
    *1 COURTESY LIGHT ASSEMBLY *2 FRONT ARMREST ASSEMBLY
    *3 FRONT DOOR ARMREST COVER SUB-ASSEMBLY *4 FRONT DOOR INNER GLASS WEATHERSTRIP WITH FRONT DOOR VENT SEAL
    *5 FRONT DOOR INSIDE HANDLE SUB-ASSEMBLY *6 FRONT DOOR LOWER FRAME BRACKET GARNISH
    *7 FRONT DOOR TRIM BOARD SUB-ASSEMBLY *8 FRONT DOOR VENT SEAL
    *9 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WITH FRONT DOOR UPPER ARMREST BASE PANEL *10 POWER WINDOW REGULATOR SWITCH ASSEMBLY WITH FRONT DOOR UPPER ARMREST BASE PANEL
    *11 FRONT DOOR INNER GLASS WEATHERSTRIP - -
    B0083ASC03
    *1 DOOR SIDE AIRBAG SENSOR *2 FRONT DOOR GLASS RUN
    *3 FRONT DOOR GLASS SUB-ASSEMBLY *4 FRONT DOOR PANEL PROTECTOR
    *5 FRONT DOOR REAR LOWER FRAME SUB-ASSEMBLY *6 FRONT DOOR SERVICE HOLE COVER
    *7 FRONT DOOR WINDOW REGULATOR ASSEMBLY *8 FRONT NO. 1 SPEAKER ASSEMBLY
    *9 HOLE PLUG *10 OUTER MIRROR CONTROL ECU ASSEMBLY
    *11 OUTER MIRROR INSTALL HOLE COVER *12 OUTER REAR VIEW MIRROR ASSEMBLY WITH COVER
    *13 FRONT DOOR NO. 2 SERVICE HOLE COVER *14 FRONT DOOR WEATHERSTRIP CLIP
    B008394 Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf) B008395 N*m (kgf*cm, ft.*lbf): Specified torque
    B00834P MP grease - -
    B00834VC01
    *1 DOOR FRAME GARNISH *2 FRONT DOOR BELT MOULDING ASSEMBLY
    *3 FRONT DOOR CHECK ASSEMBLY *4 FRONT DOOR FRONT LOWER FRAME SUB-ASSEMBLY
    *5 FRONT DOOR FRONT LOWER FRAME UPPER COVER *6 FRONT DOOR NO. 2 STRIPE
    *7 FRONT DOOR NO. 2 WEATHERSTRIP *8 FRONT DOOR NO. 3 STRIPE
    *9 FRONT DOOR PANEL CUSHION *10 FRONT DOOR WEATHERSTRIP
    B008395 N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part
    B00834P Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent ★ Precoated part
    B00835XC01
    *1 DOOR WINDOW FRAME MOULING CLIP *2 FRONT DOOR REAR OUTSIDE SEAL
    *3 FRONT DOOR REAR WINDOW FRAME MOULDING *4 FRONT DOOR UPPER WINDOW FRAME MOULDING
    *5 RIVET - -
    ● Non-reusable part - -

  6. PARTS LOCATION

    B008388C03
    *A w/ Front Seat Side Airbag *B w/ Occupant Classification System
    *1 FRONT AIRBAG SENSOR LH *2 FRONT AIRBAG SENSOR RH
    *3 DOOR SIDE AIRBAG SENSOR LH *4 DOOR SIDE AIRBAG SENSOR RH
    *5 SIDE NO. 1 AIRBAG SENSOR LH *6 SIDE NO. 1 AIRBAG SENSOR RH
    *7 SIDE NO. 2 AIRBAG SENSOR LH *8 SIDE NO. 2 AIRBAG SENSOR RH
    *9 FRONT SEAT ADJUSTER ASSEMBLY LH *10 SEAT POSITION SENSOR
    *11

    FRONT SEAT INNER BELT ASSEMBLY LH

    - FRONT SEAT BELT BUCKLE SWITCH LH

    		 - -
    B00838JC02
    *A for Type A *B for Type B
    *C w/ Front Seat Side Airbag *D w/ Rear Seat Side Airbag
    *E w/ Curtain Shield Airbag *F w/ Rear Seat Belt Pretensioner
    *1 CURTAIN SHIELD AIRBAG ASSEMBLY LH *2 CURTAIN SHIELD AIRBAG ASSEMBLY RH
    *3 FRONT SEAT OUTER BELT ASSEMBLY LH *4 FRONT SEAT OUTER BELT ASSEMBLY RH
    *5 FRONT SEAT AIRBAG ASSEMBLY LH *6 FRONT SEAT AIRBAG ASSEMBLY RH
    *7 REAR SEAT OUTER BELT ASSEMBLY LH *8 REAR SEAT OUTER BELT ASSEMBLY RH
    *9 REAR SEAT AIRBAG ASSEMBLY LH *10 REAR SEAT AIRBAG ASSEMBLY RH
    B0083ABC03
    *A for LHD *B w/ Driver Side Knee Airbag
    *C w/ Front Passenger Side Knee Airbag *D w/o Occupant Classification System
    *E w/ Occupant Classification System *F w/ Telematics Transceiver
    *1 HORN BUTTON ASSEMBLY *2 INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
    *3 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY *4 LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY
    *5 AIRBAG SENSOR ASSEMBLY *6 OCCUPANT DETECTION ECU
    *7 SPIRAL CABLE SUB-ASSEMBLY *8

    TELLTALE LIGHT ASSEMBLY

    - PASSENGER AIRBAG ON/OFF INDICATOR
    *9

    SPIRAL CABLE SUB-ASSEMBLY

    - SRS WARNING LIGHT

    		 *10 DLC3
    *11 TELEMATICS TRANSCEIVER *12 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
    *13

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - A/BAG-IG2 FUSE

    - METER-IG2 FUSE

    - ECU-DCC NO. 2 FUSE

    		 *14

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - A/BAG-IG2 FUSE

    - METER-IG2 FUSE

    - ECU-DCC NO. 2 FUSE

    - ECU-IG1 NO. 4 FUSE
    B008365C02
    *A for RHD *B w/ Driver Side Knee Airbag
    *1 HORN BUTTON ASSEMBLY *2 INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
    *3 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY *4 AIRBAG SENSOR ASSEMBLY
    *5 SPIRAL CABLE SUB-ASSEMBLY *6

    COMBINATION METER ASSEMBLY

    - SRS WARNING LIGHT
    *7 DLC3 *8 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
    *9

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - A/BAG-IG2 FUSE

    - METER-IG2 FUSE

    - ECU-DCC NO. 2 FUSE

    		 - -