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Home >> Toyota >> 2012 >> FJ Cruiser 4WD, Part Time T/Case Control >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) >> Airbag System >> DTC B1603/83: Front Satellite Sensor Bus RH Initialization Incomplete; DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete >> Procedure
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DTC B1603/83: Front Satellite Sensor Bus RH Initialization Incomplete; DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete: Procedure

  1. CHECK CONNECTOR (INSTRUMENT PANEL WIRE - 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. Disconnect the instrument panel wire connector from the center airbag sensor assembly.
    4. Check the instrument panel wire connector and terminals (on the center airbag sensor assembly side) and check that the connector is properly connected to the center airbag sensor assembly.

      Result

      Result Proceed to
      No problem. A
      Connector or terminals incorrect. B
      Connector connected improperly. C

    B → REPLACE INSTRUMENT PANEL WIRE 

    C → CONNECT CONNECTOR PROPERLY 

    A: Go to next step 

  2. CHECK CONNECTOR (ENGINE ROOM MAIN WIRE - FRONT AIRBAG SENSOR RH) 
    1. Disconnect the engine room main wire connector from the front airbag sensor RH.
    2. Check the engine room main wire connector and terminals (on the front airbag sensor RH side) and check that the connector is properly connected to the front airbag sensor RH.

      Result

      Result Proceed to
      No problem. A
      Connector or terminals incorrect. B
      Connector connected improperly. C

    B → REPLACE ENGINE ROOM MAIN WIRE 

    C → CONNECT CONNECTOR PROPERLY 

    A: Go to next step 

  3. CHECK FRONT AIRBAG SENSOR RH CIRCUIT 
    Fig 1: Checking Front Airbag Sensor RH Circuit And Connector Terminals
    GTY308808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check for short to B+ in the circuit.
      1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
      2. Turn the ignition switch to ON.
      3. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        E29-29 (+SR) - Body ground Ignition switch ON Below 1 V
        E29-27 (-SR) - Body ground Ignition switch ON Below 1 V
      4. Turn the ignition switch off.
      5. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    2. Check for open in the circuit.
      1. Using a service wire, connect A34-1 and A34-2 of connector E.
        NOTE:

        Do not forcibly insert the service wire into the terminals of the connector when connecting.

      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        E29-29 (+SR) - E29-27 (-SR) Always Below 1Ω
    3. Check for short in the circuit.
      1. Disconnect the service wire from connector E.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        E29-29 (+SR) - E29-27 (-SR) Always 1 MΩ or higher
    4. Check for short to ground in the circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        E29-29 (+SR) - Body ground Always 1 MΩ or higher
        E29-27 (-SR) - Body ground Always 1 MΩ or higher

    NG → See step   5 

    OK: Go to next step 

  4. CHECK FRONT AIRBAG SENSOR RH 
    Fig 2: Checking Front Airbag Sensor RH
    GTY171118Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect the connector to the center airbag sensor assembly.
    2. Interchange the front airbag sensor RH with the front airbag sensor LH 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 to ON, and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR .
    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC B1603/83, B1612/83 or B1613/83 is output. A
      DTC B1608/84, B1617/84 or B1618/84 is output. B

    B → See step   7 

    A → See step   8 

  5. CHECK CONNECTOR (ENGINE ROOM MAIN WIRE - INSTRUMENT PANEL WIRE) 
    1. Disconnect the engine room main wire connector from the instrument panel wire.
    2. Check the engine room main wire connector and terminals (on the instrument panel wire side) and check that the connector is properly connected to the instrument panel wire.

      Result

      Result Proceed to
      No problem. A
      Connector or terminals incorrect. B
      Connector connected improperly. C

    B → REPLACE ENGINE ROOM MAIN WIRE 

    C → CONNECT CONNECTOR PROPERLY 

    A: Go to next step 

  6. CHECK ENGINE ROOM MAIN WIRE 
    Fig 3: Checking Engine Room Main Wire
    GTY309907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check for short to B+ in the circuit.
      1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
      2. Turn the ignition switch to ON.
      3. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        EA5-1 - Body ground Ignition switch ON Below 1 V
        EA5-2 - Body ground Ignition switch ON Below 1 V
      4. Turn the ignition switch off.
      5. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    2. Check for open in the circuit.
      1. Using a service wire, connect A34-1 and A34-2 of connector E.
        NOTE:

        Do not forcibly insert the service wire into the terminals of the connector when connecting.

      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        EA5-1 - EA5-2 Always Below 1Ω
    3. Check for short in the circuit.
      1. Disconnect the service wire from connector E.
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        EA5-1 - EA5-2 Always 1 MΩ or higher
    4. Check for short to ground in the circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        EA5-1 - Body ground Always 1 MΩ or higher
        EA5-2 - Body ground Always 1 MΩ or higher

    NG → REPLACE ENGINE ROOM MAIN WIRE 

    OK → REPLACE INSTRUMENT PANEL WIRE 

  7. REPLACE FRONT AIRBAG SENSOR RH. Refer to  REMOVAL 
  8. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
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