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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 B1635/24 Front Passenger Side Rear Airbag Sensor 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.
  1. CHECK DTC 
    1. Turn the ignition switch on and wait for at least 60 seconds.
    2. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR  ).
    3. Turn the ignition switch off.
    4. Turn the ignition switch on and wait for at least 60 seconds.
    5. Check the DTCs (See DTC CHECK / CLEAR  ).

      OK: DTC B1635/24 is not output. 

      HINT:

      DTCs other than DTC B1635/24 may be output at this time, but they are not related to this check.

      6. Fig 1: Checking DTC
      G04830038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: USE SIMULATION METHOD TO CHECK 

    NG: 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 rear airbag sensor RH.

      OK: The connectors are properly connected. 

    NG: CONNECT CONNECTORS 

    OK: GO TO NEXT STEP 

  3. CHECK FLOOR WIRE (FOR OPEN) 
    1. Disconnect the connectors from the side airbag sensor RH and the rear airbag sensor RH.
    2. Using a service wire, connect J14-2 (BCR+) and J14-1 (BCR-) of connector C.
      NOTE: Do not forcibly insert a 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
      J16-1 (BCR+) - J16-2 (BCR-) Always Below 1 Ω
      4. Fig 2: Checking Floor Wire (For Open)
      G04830039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE 

    OK: GO TO NEXT STEP 

  4. CHECK FLOOR 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
      J16-1 (BCR+) - J16-2 (BCR-) Always 1 MΩ or higher
      3. Fig 3: Checking Floor Wire (For Short)
      G04830040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE 

    OK: GO TO NEXT STEP 

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

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      J16-1 (BCR+) - Body ground Ignition switch on Below 1 V
      J16-2 (BCR-) - Body ground Ignition switch on Below 1 V
      4. Fig 4: Checking Floor Wire (For Short)
      G04830040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE 

    OK: GO TO NEXT STEP 

  6. CHECK FLOOR 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
      J16-1 (BCR+) - Body ground Always 1 MΩ or higher
      J16-2 (BCR-) - Body ground Always 1 MΩ or higher
      4. Fig 5: Checking Floor Wire (For Short)
      G04830040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE 

    OK: GO TO NEXT STEP 

  7. CHECK REAR AIRBAG SENSOR RH 
    1. Connect the connectors to the center airbag sensor assembly.
    2. Interchange the rear airbag sensor LH with the rear airbag sensor RH and connect the connectors to them.
    3. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
    4. Turn the ignition switch on and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR  ).
    6. Turn the ignition switch off.
    7. Turn the ignition switch on and wait for at least 60 seconds.
    8. Check the DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT CHART

      Result Proceed to
      DTC B1635/24 is output. A
      DTC B1630/23 is output. B
      DTC B1630/23 and B1635/24 are not output. C
      9. Fig 6: Checking Rear Airbag Sensor RH
      G04830043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A: Go to step 8 

    B: REPLACE REAR AIRBAG SENSOR RH 

    C: USE SIMULATION METHOD TO CHECK 

  8. CHECK SIDE AIRBAG SENSOR RH 
    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. Return the airbag sensor rear LH and airbag sensor rear RH to their original positions and connect the connectors to them.
    4. Interchange the side airbag sensor RH with the side airbag sensor LH and connect the connectors to them.
    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  ).

      Result 

      RESULT CHART

      Result Proceed to
      DTC B1635/24 is output. A
      DTC B1630/23 is output. B
      Neither DTC B1630/23 nor B1635/24 is output. C
      11. Fig 7: Checking Side Airbag Sensor RH
      G04830044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A: REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

    B: REPLACE SIDE AIRBAG SENSOR RH 

    C: USE SIMULATION METHOD TO CHECK 

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