OCCUPANT CLASSIFICATION SYSTEM Trouble in Passenger Airbag ON/OFF Indicator

DTC Code DTC Name
Trouble in Passenger Airbag ON/OFF Indicator

DESCRIPTION

The occupant classification system detects the front passenger seat condition. It then displays the front passenger airbag and front passenger side knee airbag condition (activated/not activated) using the passenger airbag ON/OFF indicator.

Tip:

Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will indicate ON/OFF depending on the conditions listed below.

Front Passenger Seat Condition

Passenger Airbag ON/OFF Indicator

SRS Warning Light

ON Indicator

OFF Indicator

Vacant

OFF

ON

OFF

Adult is seated.

ON

OFF

OFF

Child is seated.

OFF

ON

OFF

Child restraint system is installed.

Occupant classification system failure

OFF

ON

ON

CAUTION / NOTICE / HINT

Note:

  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Click hereClick here

PROCEDURE

  1. CHECK SRS WARNING LIGHT

    1. Turn the ignition switch to ON, and check the SRS warning light condition.

      Tip:

      If passenger airbag ON/OFF indicator trouble occurs, the SRS warning light does not illuminate. If the light comes on, a DTC is stored. Troubleshoot for the DTC.

      OK

      After the primary check period, the SRS warning light goes off.

      Tip:

      The primary check is performed for approximately 6 seconds after the ignition switch is turned to ON.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO AIRBAG SYSTEM

    Click here

    OK

  2. PERFORM ZERO POINT CALIBRATION AND SENSITIVITY CHECK

    1. Using the GTS, perform zero point calibration and sensitivity check.

      Click here

      Body Electrical > Occupant Detection > Utility

      Tester Display

      Zero Point Calibration

      OK

      "Zero Point Calibration is complete." and "Sensitivity Check is complete." are displayed.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  3. RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT

    1. Loosen the 4 installation bolts of the front seat assembly RH.

      for Manual Seat:Click here

      for Power Seat:Click here

    2. Tighten the 4 installation bolts of the front seat assembly RH to the specified torque.

      for Manual Seat:Click here

      for Power Seat:Click here

    Result

    Proceed to

    NEXT
    NEXT

  4. PERFORM ZERO POINT CALIBRATION AND SENSITIVITY CHECK

    1. Using the GTS, perform zero point calibration and sensitivity check.

      Click here

      Body Electrical > Occupant Detection > Utility

      Tester Display

      Zero Point Calibration

      OK

      "Zero Point Calibration is complete." and "Sensitivity Check is complete." are displayed.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

  5. READ VALUE USING GTS

    1. Using the GTS, read the Data List.

      Click here

      1. Read the display when the passenger side buckle switch is operated.

        Body Electrical > Occupant Detection > Data List

        Set/Unset

        Tester Display

        Measurement Item

        Range

        Normal Condition

        Diagnostic Note

        Passenger Buckle SW

        Front seat belt RH buckle switch

        Set, Unset or NG

        Set: The front seat belt RH is fastened

        Unset: The front seat belt RH is not fastened

        NG: Data is not determined

        -

        Body Electrical > Occupant Detection > Data List

        Tester Display

        Passenger Buckle SW

        OK

        The GTS display changes correctly in accordance with the operation of the buckle switch.

    Result

    Result

    OK

    NG
    NG

    CHECK CONNECTORSClick here

    OK

  6. CHECK CONNECTORS

    1. Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

    3. Disconnect the connectors from the occupant detection ECU and 2 rear occupant classification sensors.

    4. Check that the terminals of the connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    Result

    Result

    OK

    NG
    NG

    REPLACE FRONT SEAT WIRE RH

    OK

  7. REPLACE OCCUPANT DETECTION ECU

    1. Connect the connectors to the 2 rear occupant classification sensors.

    2. Replace the occupant detection ECU.

      Click here

    3. Connect the cable to the negative (-) battery terminal.

    Result

    Proceed to

    NEXT
    NEXT

  8. PERFORM ZERO POINT CALIBRATION AND SENSITIVITY CHECK

    1. Using the GTS, perform zero point calibration and sensitivity check.

      Click here

      Body Electrical > Occupant Detection > Utility

      Tester Display

      Zero Point Calibration

    Result

    Proceed to

    NEXT
    NEXT

    END

  9. CHECK CONNECTORS

    1. Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

    3. Disconnect the connectors from the occupant detection ECU and front seat inner belt assembly RH.

    4. Check that the terminals of the connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    Result

    Result

    OK

    NG
    NG

    REPLACE FRONT SEAT WIRE RH

    OK

  10. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

    1. Connect the connector to the occupant detection ECU.

    2. Replace the front seat inner belt assembly RH.

      Click here

    3. Connect the cable to the negative (-) battery terminal.

    Result

    Proceed to

    NEXT
    NEXT

  11. PERFORM ZERO POINT CALIBRATION AND SENSITIVITY CHECK

    1. Using the GTS, perform zero point calibration and sensitivity check.

      Click here

      Body Electrical > Occupant Detection > Utility

      Tester Display

      Zero Point Calibration

    Result

    Proceed to

    NEXT
    NEXT

    END