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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Supplemental Restraint System) >> Airbag System >> DTC B1660/43 Passenger Airbag ON / OFF Indicator Circuit Malfunction >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: In order to prevent unexpected airbag deployment, disconnect the following connectors before inspecting parts such as wire harnesses, if the application of tester probes to the center airbag sensor assembly connector is necessary.
  1. Turn the ignition switch to the lock position.
  2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
  3. Disconnect the connector from the center airbag sensor assembly.
  4. Disconnect the connectors from the steering pad.
  5. Disconnect the connectors from the front passenger airbag assembly.
  6. Disconnect the connector from the front seat outer belt assembly LH.
  7. Disconnect the connector from the front seat outer belt assembly RH.

    HINT:

    Skip the following steps if side and curtain shield airbags are not fitted.

  8. Disconnect the connector from the front seat side airbag assembly LH.
  9. Disconnect the connector from the front seat side airbag assembly RH.
  10. Disconnect the connector from the curtain shield airbag assembly LH.
  11. Disconnect the connector from the curtain shield airbag assembly RH.
  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR OPERATION 
    1. Turn the ignition switch to the on position.
    2. Check the passenger airbag ON/OFF indicator operation.

      HINT:

      Refer to the normal condition of the passenger airbag ON/OFF indicator (See DIAGNOSIS SYSTEM  ).

      Fig 1: Checking Passenger Airbag On/Off Indicator Operation
      G04830074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      ON/OFF Indicator Illumination Proceed To
      Always ON A
      OFF B

    B: Go to step  8

    A: GO TO NEXT STEP 

  2. CHECK CONNECTION OF CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the center airbag sensor assembly and the front passenger seat belt warning light.

      OK: The connectors are properly connected. 

    NG: CONNECT CONNECTORS 

    OK: GO TO NEXT STEP 

  3. CHECK FRONT PASSENGER SEAT BELT WARNING LIGHT 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. Disconnect the connector from the center airbag sensor assembly.
    4. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
    5. Turn the ignition switch to the on position.
    6. Check the passenger airbag ON/OFF indicator operation.

      OK: Neither ON nor OFF passenger airbag ON/OFF indicator comes on. 

      7. Fig 2: Checking Front Passenger Seat Belt Warning Light
      G04830075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to step  14

    NG: GO TO NEXT STEP 

  4. CHECK INSTRUMENT PANEL WIRE (FOR OPEN) 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. For hatchback models:
      1. Disconnect the connector from the front passenger seat belt warning light.
      2. Using a service wire, connect D27-1 (PAON) and D27-5 (P-AB) of connector C.
        NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
      3. Measure the resistance.

        Standard resistance 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Condition Specified Condition
        D16-23 (PAON)-D16-17 (P-AB) Always Below 1 Ω
        Fig 3: Checking Instrument Panel Wire (For Open)
        G04830076Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. For sedan models:
      1. Disconnect the connector from the front passenger seat belt warning light.
      2. Using a service wire, connect D77-9 (PAON) and D77-10 (P-AB) of connector C.
        NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
      3. Measure the resistance.

        Standard resistance 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Condition Specified Condition
        D16-23 (PAON)-D16-17 (P-AB) Always Below 1 Ω
      5. Fig 4: Checking Instrument Panel Wire - Hatchback (For Open)
      G04830077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  5. CHECK INSTRUMENT PANEL WIRE (FOR SHORT) 
    1. Disconnect the service wire from connector C.
    2. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      D16-17 (P-AB) - D16-23 (PAON) Always 1 MΩ or Higher
      3. Fig 5: Checking Instrument Panel Wire - Sedan (For Open)
      G04830078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  6. CHECK INSTRUMENT PANEL WIRE (TO B+) 
    1. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
    2. Turn the ignition switch to the on position.
    3. Measure the voltage.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      D16-23 (PAON)-Body ground Ignition switch on Below 1 V
      D16-17 (P-AB)-Body ground Ignition switch on Below 1 V
      4. Fig 6: Checking Instrument Panel Wire - Sedan (For Open)
      G04830078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  7. CHECK INSTRUMENT PANEL WIRE (TO GROUND) 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      D16-17 (P-AB) -Body ground Always 1 MΩ or Higher
      D16-23 (PAON) -Body ground Always 1 MΩ or Higher
      4. Fig 7: Checking Instrument Panel Wire - Sedan (For Open)
      G04830078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPLACE FRONT PASSENGER SEAT BELT WARNING LIGHT 

  8. CHECK CONNECTION OF CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the center airbag sensor assembly and the front passenger seat belt warning light.

      OK: The connectors are properly connected. 

    NG: CONNECT CONNECTORS 

    OK: GO TO NEXT STEP 

  9. CHECK INSTRUMENT PANEL WIRE (FOR OPEN) 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. For hatchback models:
      1. Disconnect the connector from the front passenger seat belt warning light.
      2. Using a service wire, connect D27-1 (PAON) and D27-5 (P-AB) of connector C.
        NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
      3. Measure the resistance.

        Standard resistance 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Condition Specified Condition
        D16-23 (PAON)-D16-17 (P-AB) Always Below 1 Ω
        Fig 8: Checking Instrument Panel Wire (For Open)
        G04830076Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. For sedan models:
      1. Disconnect the connector from the front passenger seat belt warning light.
      2. Using a service wire, connect D77-9 (PAON) and D77-10 (P-AB) of connector C.
        NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
      3. Measure the resistance.

        Standard resistance 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Condition Specified Condition
        D16-23(PAON)-D16-17 (P-AB) Always Below 1 Ω
      5. Fig 9: Checking Instrument Panel Wire - Hatchback (For Open)
      G04830077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  10. CHECK INSTRUMENT PANEL WIRE (FOR SHORT) 
    1. Disconnect the service wire from connector B.
    2. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      D16-17(P-AB)-D16-23 (PAON) Always 1 MΩ or Higher
      3. Fig 10: Checking Instrument Panel Wire - Sedan (For Open)
      G04830078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  11. CHECK INSTRUMENT PANEL WIRE (TO B+) 
    1. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
    2. Turn the ignition switch to the on position.
    3. Measure the voltage.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      D16-23 (PAON) - Body ground Ignition switch on Below 1 V
      D16-17 (P-AB)-Body ground Ignition switch on Below 1 V
      4. Fig 11: Checking Instrument Panel Wire - Sedan (For Open)
      G04830078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  12. CHECK INSTRUMENT PANEL WIRE (TO GROUND) 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      D16-17 (P-AB)-Body ground Always 1 MΩ or Higher
      D16-23 (PAON) -Body ground Always 1 MΩ or Higher
      4. Fig 12: Checking Instrument Panel Wire - Sedan (For Open)
      G04830078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: GO TO NEXT STEP 

  13. CHECK WIRE HARNESS (POWER SOURCE) 
    1. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
    2. Turn the ignition switch to the on position.
    3. Measure the voltage.
      1. For hatchback models:

        Standard voltage (for HATCHBACK) 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Condition Specified Condition
        D27-6 (IG+) - Body ground Ignition switch on 11 to 14 V
        Fig 13: Checking Wire Harness - Hatchback (Power Source)
        G04830086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. For sedan models:

        Standard voltage (for SEDAN) 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Condition Specified Condition
        D77-6 (IG+) - Body ground Ignition switch on 11 to 14 V
      4. Fig 14: Checking Wire Harness - Sedan (Power Source)
      G04830087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE POWER SOURCE CIRCUIT 

    OK: GO TO NEXT STEP 

  14. CHECK FRONT PASSENGER SEAT BELT WARNING LIGHT 
    1. Turn the ignition switch off.
    2. For hatchback models:
      1. Using a service wire, connect D27-1 (PAON) and D27-4 (ILL-) of the front passenger seat belt warning light connector.
      2. Using a service wire, connect D27-5 (P-AB) and D27-4 (ILL-) of the front passenger seat belt warning light connector.
        Fig 15: Checking Front Passenger Seat Belt Warning Light - Hatchback
        G04830088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. For sedan models:
      1. Using a service wire, connect D77-9 (PAON) and D77-4 (E) of the front passenger seat belt warning light connector.
      2. Using a service wire, connect D77-10 (P-AB) and D77-4 (E) of the front passenger seat belt warning light connector.
    4. Turn the ignition switch to the on position.
    5. Check the passenger airbag ON/OFF indicator operation.

      OK: Passenger airbag ON/OFF indicator comes on 

      6. Fig 16: Checking Front Passenger Seat Belt Warning Light - Sedan
      G04830089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT PASSENGER SEAT BELT WARNING LIGHT 

    OK: GO TO NEXT STEP 

  15. CHECK CENTER AIRBAG SENSOR ASSEMBLY 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
    3. Connect the connector to the center airbag sensor assembly.
    4. Connect the connector to the front passenger seat belt warning light.
    5. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
    6. Turn the ignition switch to the on position and wait for at least 60 seconds.
    7. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR  ).
    8. Turn the ignition switch to the lock position.
    9. Turn the ignition switch to the on position and wait for at least 60 seconds.
    10. Check for DTCs (See DTC CHECK / CLEAR  ).

      OK: DTC B1660/43 is not output. 

      Fig 17: Checking Center Airbag Sensor Assembly
      G04830090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      DTCs other than B1660/43 may be output at this time, but they are not related to this check.

    NG: REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

    OK: USE SIMULATION METHOD TO CHECK 

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