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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 B1820/55 Short in Front Driver Side - Side Squib Circuit; DTC B1821/55 Open in Front Driver Side - Side Squib Circuit; DTC B1822/55 Short to GND in Front Driver Side - Side Squib Circuit; DTC B1823/55 Short to B+ in Front Driver Side - Side Squib Circuit >> 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.

HINT:

  1. CHECK FRONT SEAT SIDE AIRBAG ASSEMBLY LH (DRIVER SIDE - SIDE SQUIB) 
    1. Turn the ignition switch OFF.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Disconnect the connector from the front seat side airbag LH.
      Fig 1: Identifying Front Seat Side Airbag Assembly LH (Driver Side - Side Squib)
      G05585682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect SST (resistance 2.1 Ω) to connector C.
      CAUTION: Never connect a tester to the front seat side airbag LH (driver side - side squib) for measurement, as this may lead to a serious injury due to airbag deployment.
      NOTE:
      • Do not forcibly insert SST into the terminals of the connector when connecting.
      • Insert SST straight into the terminals of the connector.

      SST 09843-18061 

    5. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    6. Turn the ignition switch ON, and wait for at least 60 seconds.
    7. Clear the DTCs (see DTC CHECK / CLEAR  ).
    8. Turn the ignition switch OFF.
    9. Turn the ignition switch ON, and wait for at least 60 seconds.
    10. Check the DTCs (see DTC CHECK / CLEAR  ).

      OK: 

      DTC B1820, B1821, B1822, B1823 or 55 is not output. 

      HINT:

      DTCs other than DTC B1820, B1821, B1822, B1823 or 55 may be output at this time, but they are not related to this check.

    OK: REPAIR OR REPLACE FLOOR WIRE 

    NG: Go to next step 

  2. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Disconnect SST from connector C.
    4. Check that the floor wire connectors (on the driver side - side squib) are not damaged.

      OK: 

      Lock button is not disengaged, and claw of lock is not deformed or damaged. 

    NG: REPAIR OR REPLACE FLOOR WIRE 

    OK: Go to next step 

  3. CHECK FLOOR WIRE (DRIVER SIDE - SIDE SQUIB CIRCUIT) 
    1. Disconnect the connector from the center airbag sensor.
      Fig 2: Identifying Floor Wire (Driver Side - Side Squib Circuit)
      G05585683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch ON.
    4. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      KX1-1 - Body ground Below 1 V
      KX1-2 - Body ground Below 1 V
    5. Turn the ignition switch OFF.
    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    7. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      KX1-1 - KX1-2 Below Ω
      KX1-1 - Body ground 1 MΩ or higher
      KX1-2 - Body ground 1 MΩ or higher
    8. Release the activation prevention mechanism built into connector B (see DIAGNOSIS SYSTEM  ).
    9. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      KX1-1 -KX1-2 1 MΩ or higher

    NG: REPAIR OR REPLACE FLOOR WIRE 

    OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY