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, door side airbag sensors, side airbag sensor assemblies, rear airbag sensors, seat position airbag sensor or airbag sensor assembly as necessary beforehand.

    3. Do not allow the front airbag sensors, door side airbag sensors, side airbag sensor assembly, rear airbag sensors, seat position airbag sensor or airbag sensor assembly as 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

    B0055W7C01
    B0055WW Seal surface
    B0055TMC01
    *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 Service hole cover

      • If there are gaps or cracks in the seal surface (A) or clip installation area, replace it with a new one. Do not reuse a removed service hole cover or clip.
      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

    B0055UMC02
    *A for Driver Side *B for Front Passenger Side
    *1 COURTESY LIGHT ASSEMBLY *2 DOOR ARMREST COVER
    *3 FRONT DOOR INSIDE HANDLE BEZEL PLUG *4 FRONT DOOR NO. 1 STIFFENER CUSHION
    *5 FRONT DOOR TRIM BOARD SUB-ASSEMBLY *6 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WITH FRONT DOOR UPPER ARMREST BASE PANEL
    *7 POWER WINDOW REGULATOR SWITCH ASSEMBLY WITH FRONT DOOR UPPER ARMREST BASE PANEL - -
    B0055W9C03
    *1 DOOR SIDE AIRBAG SENSOR *2 FRONT DOOR FIX WINDOW GLASS
    *3 FRONT DOOR FRONT LOWER FRAME SUB-ASSEMBLY *4 FRONT DOOR GLASS RUN
    *5 FRONT DOOR GLASS SUB-ASSEMBLY *6 FRONT DOOR NO. 1 TRIM BRACKET
    *7 FRONT DOOR REAR LOWER FRAME SUB-ASSEMBLY *8 FRONT DOOR SERVICE HOLE COVER
    *9 FRONT DOOR WINDOW REGULATOR ASSEMBLY *10 FRONT NO. 1 SPEAKER ASSEMBLY
    *11 OUTER MIRROR CONTROL ECU ASSEMBLY *12 OUTER MIRROR INSTALL HOLE COVER
    *13 OUTER REAR VIEW MIRROR ASSEMBLY *14 FRONT DOOR FIX WINDOW WEATHERSTRIP
    *15 HOLE PLUG *16 OUTER MIRROR PROTECTOR
    *17 FRONT DOOR WEATHERSTRIP CLIP *18 FRONT DOOR NO. 2 SERVICE HOLE COVER
    B0055TA Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf) B0055ZS N*m (kgf*cm, ft.*lbf): Specified torque
    B0055SD MP grease ● Non-reusable part
    B0055XDC01
    *1 FRONT DOOR BELT MOULDING ASSEMBLY *2 FRONT DOOR CHECK ASSEMBLY
    *3 FRONT DOOR OUTSIDE MOULDING SUB-ASSEMBLY *4 FRONT DOOR PANEL CUSHION
    *5 FRONT DOOR PANEL PROTECTOR *6 FRONT DOOR REAR OUTSIDE STRIPE
    *7 FRONT DOOR STRIPE *8 FRONT DOOR VENT SEAL
    *9 FRONT DOOR WEATHERSTRIP *10 NO. 1 BLACK OUT TAPE
    *11 UPPER DOOR FRAME GARNISH *12 HOLE PLUG
    B0055ZS N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part
    B0055SD MP grease B00560I Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent
    ★ Precoated part - -

  6. PARTS LOCATION

    B0055ZKC02
    *A w/o Rear No. 2 Seat - -
    *1 FRONT AIRBAG SENSOR LH *2 FRONT AIRBAG SENSOR RH
    *3 DOOR SIDE AIRBAG SENSOR LH *4 DOOR SIDE AIRBAG SENSOR RH
    *5 SIDE AIRBAG SENSOR ASSEMBLY LH *6 SIDE AIRBAG SENSOR ASSEMBLY RH
    *7 REAR AIRBAG SENSOR LH *8 REAR AIRBAG SENSOR RH
    *9 CURTAIN SHIELD AIRBAG ASSEMBLY LH *10 CURTAIN SHIELD AIRBAG ASSEMBLY RH
    *11 FRONT SEAT OUTER BELT ASSEMBLY LH *12 FRONT SEAT OUTER BELT ASSEMBLY RH
    *13 REAR NO. 1 SEAT OUTER BELT ASSEMBLY LH *14 REAR NO. 1 SEAT OUTER BELT ASSEMBLY RH
    *15

    NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY (w/ Occupant Classification System or Airbag Cut Off Switch)

    - ECU-IG1 NO. 8 FUSE

    		 - -
    B0055Z7C01
    *A w/ Rear No. 2 Seat - -
    *1 FRONT AIRBAG SENSOR LH *2 FRONT AIRBAG SENSOR RH
    *3 DOOR SIDE AIRBAG SENSOR LH *4 DOOR SIDE AIRBAG SENSOR RH
    *5 SIDE AIRBAG SENSOR ASSEMBLY LH *6 SIDE AIRBAG SENSOR ASSEMBLY RH
    *7 REAR AIRBAG SENSOR LH *8 REAR AIRBAG SENSOR RH
    *9 CURTAIN SHIELD AIRBAG ASSEMBLY LH *10 CURTAIN SHIELD AIRBAG ASSEMBLY RH
    *11 FRONT SEAT OUTER BELT ASSEMBLY LH *12 FRONT SEAT OUTER BELT ASSEMBLY RH
    *13 REAR NO. 1 SEAT OUTER BELT ASSEMBLY LH *14 REAR NO. 1 SEAT OUTER BELT ASSEMBLY RH
    *15

    NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY (w/ Occupant Classification System or Airbag Cut Off Switch)

    - ECU-IG1 NO. 8 FUSE

    		 - -
    B0055ZLC01
    *A for LHD without Rear No. 2 Seat - -
    *1 HORN BUTTON ASSEMBLY *2 INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
    *3 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY *4 FRONT SEAT CUSHION AIRBAG ASSEMBLY RH
    *5 FRONT SEAT AIRBAG ASSEMBLY LH *6 FRONT SEAT AIRBAG ASSEMBLY RH
    *7 REAR SEAT AIRBAG ASSEMBLY LH *8 REAR SEAT AIRBAG ASSEMBLY RH
    B0055VDC01
    *A for LHD with Rear No. 2 Seat - -
    *1 HORN BUTTON ASSEMBLY *2 INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
    *3 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY *4 FRONT SEAT CUSHION AIRBAG ASSEMBLY RH
    *5 FRONT SEAT AIRBAG ASSEMBLY LH *6 FRONT SEAT AIRBAG ASSEMBLY RH
    *7 REAR SEAT AIRBAG ASSEMBLY LH *8 REAR SEAT AIRBAG ASSEMBLY RH
    B0055TKC03
    *A for RHD without Rear No. 2 Seat - -
    *1 HORN BUTTON ASSEMBLY *2 INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
    *3 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY *4 FRONT SEAT CUSHION AIRBAG ASSEMBLY LH
    *5 FRONT SEAT AIRBAG ASSEMBLY LH *6 FRONT SEAT AIRBAG ASSEMBLY RH
    *7 REAR SEAT AIRBAG ASSEMBLY LH *8 REAR SEAT AIRBAG ASSEMBLY RH
    B0055T1C01
    *A for RHD with Rear No. 2 Seat - -
    *1 HORN BUTTON ASSEMBLY *2 INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
    *3 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY *4 FRONT SEAT CUSHION AIRBAG ASSEMBLY LH
    *5 FRONT SEAT AIRBAG ASSEMBLY LH *6 FRONT SEAT AIRBAG ASSEMBLY RH
    *7 REAR SEAT AIRBAG ASSEMBLY LH *8 REAR SEAT AIRBAG ASSEMBLY RH
    B0055TGC01
    *A for LHD - -
    *1 AIRBAG SENSOR ASSEMBLY *2 OCCUPANT DETECTION ECU (w/ Occupant Classification System)
    *3 SEAT POSITION AIRBAG SENSOR *4 AIRBAG CUT OFF SWITCH CYLINDER SUB-ASSEMBLY (w/ Airbag Cut Off Switch)
    *5

    FRONT SEAT INNER BELT ASSEMBLY LH

    - SEAT BELT BUCKLE SWITCH LH

    		 *6

    FRONT SEAT INNER BELT ASSEMBLY RH (w/o Occupant Classification System)

    - SEAT BELT BUCKLE SWITCH RH
    *7

    COMBINATION METER ASSEMBLY

    - SRS WARNING LIGHT

    		 *8

    RADIO RECEIVER ASSEMBLY (w/ Occupant Classification System or Airbag Cut Off Switch)

    - PASSENGER AIRBAG ON/OFF INDICATOR
    *9 SPIRAL CABLE SUB-ASSEMBLY *10 DLC3
    *11

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - A/BAG-IG2 FUSE

    - METER FUSE

    - METER-IG2 FUSE

    		 - -
    B00561FC01
    *A for RHD - -
    *1 AIRBAG SENSOR ASSEMBLY *2 SEAT POSITION AIRBAG SENSOR
    *3 AIRBAG CUT OFF SWITCH CYLINDER SUB-ASSEMBLY (w/ Airbag Cut Off Switch) *4

    FRONT SEAT INNER BELT ASSEMBLY LH

    - SEAT BELT BUCKLE SWITCH LH
    *5

    FRONT SEAT INNER BELT ASSEMBLY RH

    - SEAT BELT BUCKLE SWITCH RH

    		 *6

    COMBINATION METER ASSEMBLY

    - SRS WARNING LIGHT
    *7

    RADIO RECEIVER ASSEMBLY (w/ Airbag Cut Off Switch)

    - PASSENGER AIRBAG ON/OFF INDICATOR

    		 *8 SPIRAL CABLE SUB-ASSEMBLY
    *9 DLC3 *10

    INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    - A/BAG-IG2 FUSE

    - METER FUSE

    - METER-IG2 FUSE