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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Supplemental Restraint System) >> Airbag System >> DTC B1623/81 Driver Side - Side Airbag Sensor Assembly Initialization Incomplete; DTC B1632/81 Lost Communication with Driver Side Rear Air-bag Sensor; DTC B1633/81 Driver Side Rear Airbag Sensor Initialization Incomplete; DTC B1642/81 Lost Communication with Driver Side Satellite Sensor Bus >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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 LH and the side airbag sensor LH.

    OK: The connectors are properly connected. 

    NG: CONNECT CONNECTOR 

    OK: GO to Next Step 

  2. CHECK FLOOR WIRE (OPEN) 
    1. Disconnect the connectors from the center airbag sensor and the side airbag sensor LH.
    2. Using a service wire, connect K9-4 (BBL+) and K9-3 (BBL-) 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 AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K1-24 (BBD+) - K1-23 (BBD-) Below 1 Ω

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 1: Checking Floor Wire (Open)
    G05184383Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  3. CHECK FLOOR WIRE (SHORT) 
    1. Disconnect the service wire from connector C.
    2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K1-24 (BBD+) - K1-23 (BBD-) 1 MΩ or higher

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 2: Checking Floor Wire (Short)
    G05184384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  4. CHECK FLOOR WIRE (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 AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K1-24 (BBD+) - Body ground Below 1 V
      K1-23 (BBD-) - Body ground Below 1 V

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 3: Checking Floor Wire (To B+)
    G05184384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  5. CHECK FLOOR WIRE (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 AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K1-24(BBD+) - Body ground 1 MΩ or higher
      K1-23 (BBD-) - Body ground 1 MΩ or higher

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 4: Checking Floor Wire (To Ground)
    G05184384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  6. CHECK FLOOR WIRE (OPEN) 
    1. Disconnect the connectors from the side airbag sensor LH and the rear airbag sensor LH.
    2. Using a service wire, connect K11-1 (BCL-) and K11-2 (BCL+) 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 AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K9-1 (BCL+) - K9-2 (BCL-) Below 1 Ω

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 5: Checking Floor Wire (Open)
    G05184393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  7. CHECK FLOOR WIRE (SHORT) 
    1. Disconnect the service wire from connector C.
    2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K9-1 (BCL+) - K9-2 (BCL-) 1 MΩ or higher

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 6: Checking Floor Wire (Short)
    G05184394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. CHECK FLOOR WIRE (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 AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K9-1 (BCL+) - Body ground Below 1 V
      K9-2 (BCL-) - Body ground Below 1 V

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 7: Checking Floor Wire (To B+)
    G05184394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  9. CHECK FLOOR WIRE (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 AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      K9-1 (BCL+) - Body ground 1 MΩ or higher
      K9-2 (BCL-) - Body ground 1 MΩ or higher

    NG: REPAIR OR REPLACE FLOOR WIRE 

    Fig 8: Checking Floor Wire (To Ground)
    G05184396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  10. 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.
    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 CHART

      Result Proceed to
      DTC B1623/81, B1632/81, B1633/81, B1642/81, B1628/82, B1637/82, B1638/ 82 and B1647/82 is not output A
      DTC B1623/81, B1632/81, B1633/81 and B1642/81 are output B
      DTC B1628/82, B1637/82, B1638/82 and B1647/82 are output C

      HINT:

      DTCs other than DTC B1623/81, B1632/81, B1633/81, B1642/81, B1628/82, B1637/82, B1638/82 and B1647/ 82 may be output at this time, but they are not relate to this check.

    Fig 9: Checking Side Airbag Sensor RH
    G05184397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B: REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

    C: REPLACE SIDE AIRBAG SENSOR RH 

    A: GO to Next Step 

  11. 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 RH with the rear airbag sensor LH and connect the connectors to them.
    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 CHART

      Result Proceed to
      DTC B1623/81, B1632/81, B1633/81, B1642/81, B1628/82, B1637/82, B1638/ 82 and B1647/82 is not output A
      DTC B1623/81, B1632/81, B1633/81 and B1642/81 are output B
      DTC B1628/82, B1637/82, B1638/82 and B1647/82 are output C

      HINT:

      DTCs other than DTC B1623/81, B1632/81, B1633/81, B1642/81, B1628/82, B1637/82, B1638/82 and B1647/ 82 may be output at this time, but they are not relate to this check.

    Fig 10: Checking Rear Airbag Sensor RH
    G05184398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B: REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

    C: REPLACE REAR AIRBAG SENSOR RH 

    A: USE SIMULATION METHOD TO CHECK 

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