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Home >> Toyota >> 2005 >> Corolla CE, Automatic >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System >> Supplemental Restraint System >> On-Vehicle Inspection

On-Vehicle Inspection

CAUTION: Be sure to perform the initialization of the occupant classification ECU if any of the following conditions occur (see INITIALIZATION ). If the initialization is not performed, the SRS may not operate properly
CAUTION:
  • The occupant classification ECU is replaced.
  • Accessories (seatback tray, seat cover, etc.) are installed to the vehicle.
  • The passenger seat is removed from the vehicle, and then reinstalled or replaced.
  • The passenger airbag ON/OFF indicator light ("OFF") comes on when the passenger seat is not occupied.
  • The vehicle is brought to the workshop for repair due to an accident or collision.
  1. HORN BUTTON ASSY (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the horn button assy installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the horn button assy with a new one: Cuts, minute cracks or marked discoloration on the horn button assy top surface or in the grooved portion.
    Fig 1: Identifying Horn Button Assembly
    G02615468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. HORN BUTTON ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the horn button assy removed from the vehicle, perform a visual check. If there are any defects as mentioned below, replace the horn button assy or steering wheel assy with a new one:
      • Cuts, minute cracks or marked discoloration on the horn button assy top surface or in the grooved portion.
        Fig 2: Identifying Horn Assembly
        G02615469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Cracks or other damage to the connector.
      • Deformation of the steering wheel assy.
      • Deformation of the horn button contact plate of the steering wheel assy.
        Fig 3: Identifying Horn Button Contact Plate
        G02615470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • There should be no interference between the horn button assy and steering wheel assy, and the clearance should be uniform all the way around when the new horn button assy is installed on the steering wheel assy.
      CAUTION: For removal and installation procedures of the horn button assy, see REPLACEMENT , and be sure to follow the correct procedure.
      Fig 4: Locating Horn Button
      G02615471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTRUMENT PANEL PASSENGER AIRBAG ASSY (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the instrument panel passenger airbag assy installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the instrument panel with a new one:

      Cuts, minute cracks or marked discoloration on the instrument panel around the instrument panel passenger air-bag assy.

      Fig 5: Identifying Instrument Panel
      G02615472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTRUMENT PANEL PASSENGER AIRBAG ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the instrument panel passenger airbag assy removed from the vehicle, perform a visual check. If there are any defects as mentioned below, replace the instrument panel passenger airbag assy, instrument panel or instrument panel reinforcement with a new one:
      Fig 6: Identifying Instrument Panel Passenger Airbag
      G02615473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Cuts, minute cracks or marked discoloration on the instrument panel passenger airbag assy.
      • Cracks or other damage to the wire harness or connector.
      • Deformation or cracks on the instrument panel or instrument panel reinforcement.
        CAUTION: For removal and installation procedures of the instrument panel passenger airbag assy, see REPLACEMENT , and be sure to follow the correct procedure.
        Fig 7: Identifying Deformation Or Cracks On Instrument Panel
        G02615474Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • There should be no interference between the instrument panel and the instrument panel passenger airbag assy.
      CAUTION: For removal and installation procedures of the instrument panel passenger airbag assy, see REPLACEMENT , and be sure to follow the correct procedure.
      Fig 8: Identifying Interference Between Instrument Panel
      G02615475Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. FRONT SEAT AIRBAG ASSY (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the front seat airbag assy installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front seat back assy with a new one:

      Cuts, minute cracks or marked discoloration on the front seatback assy around the front seat airbag assy.

    Fig 9: Identifying Front Seat Airbag Assy
    G02615476Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. FRONT SEAT AIRBAG ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the front seat airbag assy removed from the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front seat airbag assy with a new one:
      • Cuts, minute cracks or marked discoloration on the front seat airbag assy.
      • Cracks or other damage to the wire harness or connector.
    Fig 10: Checking Airbag Visually
    G02615477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CAUTION: For removal and installation procedures of the front seat airbag assy, see OVERHAUL , and be sure to follow the correct procedure.
  7. CURTAIN SHIELD AIRBAG ASSY (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the curtain shield airbag assy installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front pillar garnish or roof headlining assy with a new one:

      Cuts, minute cracks or marked discoloration on the front pillar garnish and roof headlining assy around the curtain shield airbag assy.

    Fig 11: Performing Diagnostic System
    G02615478Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. CURTAIN SHIELD AIRBAG ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. With the curtain shield airbag assy removed from the vehicle, perform a visual check. If there are any defects as mentioned below, replace the curtain shield airbag assy with a new one:
      Fig 12: Identifying Curtain Shield Airbag Assy
      G02615479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Cuts, minute cracks or marked discoloration on the curtain shield airbag assy.
      • Cracks or other damage to the connector.
    CAUTION: For removal and installation procedures of the curtain shield airbag assy, see REPLACEMENT , and be sure to follow the correct procedure.
  9. AIRBAG SENSOR ASSY CENTER (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  10. AIRBAG SENSOR ASSY CENTER (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  11. AIRBAG SENSOR ASSY CENTER (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED) 
    1. Replace the airbag sensor assy center (see REPLACEMENT ).
    CAUTION: For removal and installation procedures of the airbag sensor assy center, see REPLACEMENT , and be sure to follow the correct procedure.

    HINT:

    The airbag sensor assy center should be replaced after any of the airbags has deployed, as it has been subjected to the impact.

  12. AIRBAG SENSOR FRONT (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  13. AIRBAG SENSOR FRONT (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. When the front bumper of the vehicle or its periphery is damaged, check if there is any damage to the airbag sensor front. If any of the airbag sensor front defects as mentioned below, replace the airbag sensor front with a new one:
      • Cracks, dents or chips in the case.
      • Cracks or other damage to the connector.
      • Peeling off of the label or damage to the serial number.
    CAUTION: For removal and installation procedures of the airbag sensor front, see REPLACEMENT , and be sure to follow the correct procedure.
  14. AIRBAG SENSOR FRONT (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED) 
    1. Replace the airbag sensor front (see REPLACEMENT ).
    CAUTION: For removal and installation procedures of the airbag sensor front, see REPLACEMENT , and be sure to follow the correct procedure.

    HINT:

    The airbag sensor front on the impacted side should be replaced after the horn button assy or instrument panel passenger airbag assy has deployed.

  15. SIDE AIRBAG SENSOR ASSY (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  16. SIDE AIRBAG SENSOR ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. When the center pillar of the vehicle or its periphery is damaged, check if there is any damage to the side airbag sensor assy. If there are any defects as mentioned below, replace the side airbag sensor assy with a new one:
      • Cracks, dents or chips in the case.
      • Cracks or other damage to the connector.
      • Peeling off of the label or damage to the serial number.
    CAUTION: For removal and installation procedures of the side airbag sensor assy, see REPLACEMENT , and be sure to follow the correct procedure.
  17. SIDE AIRBAG SENSOR ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED) 
    1. Replace the side airbag sensor assy (see REPLACEMENT ).
    CAUTION: For removal and installation procedures of the side airbag sensor assy, see REPLACEMENT , and be sure to follow the correct procedure.

    HINT:

    The side airbag sensor assy on the impacted side should be replaced after the front seat airbag assy and curtain shield airbag assy have deployed.

  18. AIRBAG SENSOR REAR (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  19. AIRBAG SENSOR REAR (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED)
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. When the quarter panel of the vehicle or its periphery is damaged, check if there is any damage to the airbag sensor rear. If there are any defects as mentioned below, replace the airbag sensor rear with a new one:
      • Cracks, dents or chips in the case.
      • Cracks or other damage to the connector.
      • Peeling off of the label or damage to the serial number.
    CAUTION: For removal and installation procedures of the airbag sensor rear, see REPLACEMENT , and be sure to follow the correct procedure.
  20. AIRBAG SENSOR REAR (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED) 
    1. Replace the airbag sensor rear (see REPLACEMENT ).
    CAUTION: For removal and installation procedures of the airbag sensor rear, see REPLACEMENT , and be sure to follow the correct procedure.

    HINT:

    The airbag sensor rear on the impacted side should be replaced after the curtain shield airbag assy has deployed.

  21. SEAT POSITION AIRBAG SENSOR (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  22. SEAT POSITION AIRBAG SENSOR (VEHICLE INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. Even if the airbag was not deployed, perform a visual check for damage to the seat position airbag sensor. If there are any defects as mentioned below, replace the seat position airbag sensor with a new one:
      • Cracks, dents or chips in the case.
      • Cracks or other damage to the connector.
    CAUTION: For removal and installation procedures of the seat position airbag sensor, see REPLACEMENT , and be sure to follow the correct procedure.
  23. OCCUPANT CLASSIFICATION ECU (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  24. OCCUPANT CLASSIFICATION ECU (VEHICLE INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. Even if the airbag was not deployed, perform a visual check for damage to the occupant classification ECU. If there are any defects as mentioned below, replace the occupant classification ECU with a new one:
      • Cracks, dents or chips in the case.
      • Cracks or other damage to the connector.
    CAUTION: For removal and installation procedures of the occupant classification ECU, see REPLACEMENT , and be sure to follow the correct procedure.
  25. WIRE HARNESS AND CONNECTOR (VEHICLE NOT INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
  26. WIRE HARNESS AND CONNECTOR (VEHICLE INVOLVED IN COLLISION) 
    1. Perform a diagnostic system check (see DIAGNOSTIC TROUBLE CODES CHECK/CLEAR ).
    2. Check for breaks in all wires of the SRS wire harness and exposed conductors.
    3. Check to see if the SRS wire harness connectors are cracked or chipped.

    HINT:

    The SRS wire harness is integrated with the engine room main wire, instrument panel wire, instrument panel wire No.3 and floor wire.

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