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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 221 (Supplemental Restraint System) >> Airbag System >> DTC B1648/82 Front Passenger Side Satellite Sensor Bus Initialization Incomplete >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTC 
    1. Turn the ignition switch ON, and wait for at least 60 seconds.
    2. Clear the DTCs (see DTC CHECK / CLEAR  ).
      Fig 1: Identifying DTC
      G05585613Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 B1627/82 is not output. 

      DTC B1637/82 is not output. 

      HINT:

      DTCs other than DTC B1627/82 and B1637/82 may be output at this time, but they are not related to this check.

    NG: GO TO DTC OUTPUT  

    OK: Go to next step 

  2. CHECK CONNECTION OF CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the center airbag sensor, rear airbag sensor RH and the side airbag sensor RH.

      OK: 

      The connectors are properly connected. 

    NG: CONNECT CONNECTOR 

    OK: Go to next step 

  3. CHECK FLOOR WIRE NO. 2 (OPEN) 
    1. Disconnect the connectors from the center airbag sensor and the side airbag sensor RH.
    2. Using a service wire, connect L10-4 (BBR+) and L10-3 (BBR-) of connector C.
      NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
    3. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L7-17 (BBP+) - L7-18 (BBP-) Below 1 Ω
      Fig 2: Identifying Floor Wire No. 2 (Open)
      G05585614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  4. CHECK FLOOR WIRE NO. 2 (SHORT) 
    1. Disconnect the service wire from connector C.
    2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L7-17 (BBP+) - L7-18 (BBP-) 1 MΩ or higher
      Fig 3: Identifying Floor Wire No. 2 (Short)
      G05585615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  5. CHECK FLOOR WIRE NO. 2 (TO B+) 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L7-17 (BBP+) - Body ground Below 1 V
      L7-18 (BBP-) - Body ground Below 1 V
      Fig 4: Identifying Floor Wire No. 2 (To B+)
      G05585616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  6. CHECK FLOOR WIRE NO. 2 (TO GROUND) 
    1. Turn the ignition switch OFF.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L7-17 (BBP+) - Body ground 1 MΩ or higher
      L7-18 (BBP-) - Body ground 1 MΩ or higher
      Fig 5: Identifying Floor Wire No. 2 (To Ground)
      G05585617Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  7. CHECK FLOOR WIRE NO. 2 (OPEN) 
    1. Disconnect the connectors from the side airbag sensor RH and the rear airbag sensor RH.
    2. Using a service wire, connect L12-1 (BCR-) and L12-2 (BCR+) of connector C.
      NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
    3. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L10-1 (BCR+) - L10-2 (BCR-) Below 1 Ω
      Fig 6: Identifying Floor Wire No. 2 (Open)
      G05585618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  8. CHECK FLOOR WIRE NO. 2 (SHORT) 
    1. Disconnect the service wire from connector C.
    2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L10-1 (BCR+) - L10-2 (BCR-) 1 MΩ or higher
      Fig 7: Identifying Floor Wire No. 2 (Short)
      G05585619Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  9. CHECK FLOOR WIRE NO. 2 (TO B+) 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L10-1 (BCR+) - Body ground Below 1 V
      L10-2 (BCR-) - Body ground Below 1 V
      Fig 8: Checking Floor Wire No. 2 (To B+)
      G05585620Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  10. CHECK FLOOR WIRE NO. 2 (TO GROUND) 
    1. Turn the ignition switch OFF.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L10-1 (BCR+) - Body ground 1 MΩ or higher
      L10-2 (BCR-) - Body ground 1 MΩ or higher
      Fig 9: Identifying Floor Wire No. 2 (To Ground)
      G05585621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE FLOOR WIRE NO. 2 

    OK: Go to next step 

  11. CHECK SIDE AIRBAG SENSOR RH 
    1. Connect the connectors to the center airbag sensor.
    2. Interchange the side airbag sensor RH with the side airbag sensor LH and connect the connectors to them.
      Fig 10: Identifying Side Airbag Sensor RH
      G05585622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch ON, and wait for at least 60 seconds.
    5. Clear the DTCs (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 for DTCs (see DTC CHECK / CLEAR  ).

      Result 

      RESULT

      Result Proceed to
      DTC B1643/81 and B1648/82 are not output A
      DTC B1648/82 is output B
      DTC B1643/81 is output C

      HINT:

      DTCs other than DTC B1643/81 or B1648/82 may be output at this time, but they are not related to this check.

    B: REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

    C: REPLACE SIDE AIRBAG SENSOR RH 

    A: Go to next step 

  12. CHECK REAR AIRBAG SENSOR RH 
    1. Turn the ignition switch OFF.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Interchange the rear airbag sensor LH with the rear airbag sensor RH and connect the connectors to them.
      Fig 11: Identifying Rear Airbag Sensor RH
      G05585623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    5. Turn the ignition switch ON, and wait for at least 60 seconds.
    6. Clear the DTCs (see DTC CHECK / CLEAR  ).
    7. Turn the ignition switch OFF.
    8. Turn the ignition switch ON, and wait for at least 60 seconds.
    9. Check the DTCs (see DTC CHECK / CLEAR  ).

      Result 

      RESULT

      Result Proceed to
      DTC B1643/81 and B1648/82 are not output A
      DTC B1648/82 is output B
      DTC B1643/81 is output C

    B: REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

    C: REPLACE REAR AIRBAG SENSOR RH 

    A: USE SIMULATION METHOD TO CHECK 

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