SEAT BELT WARNING SYSTEM Front Passenger Side Seat Belt Warning Light Malfunction

DESCRIPTION

When the ignition switch is ON, the combination meter assembly monitors the state of the front passenger side seat and the front seat inner belt assembly RH*1 or LH*2 and also whether the front passenger seat is occupied. If the front passenger side seat belt is not fastened, the seat belt warning light of the combination meter assembly blinks. If the seat belt is fastened, the warning light goes off.


Tech Tips

The seat belt warning light on the combination meter assembly is used for both the driver side seat and front passenger side seat.

WIRING DIAGRAM

B0028X7E03

CAUTION / NOTICE / HINT

Note

When replacing the combination meter assembly, make sure to replace it with a new one.

PROCEDURE


  1. READ VALUE USING GTS (P-SEATBELT BUCKLE SW)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Combination Meter / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Combination Meter > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      P-Seatbelt Buckle SW Front passenger seat belt buckle switch signal ON or OFF

      ON: Front passenger seat belt not fastened

      OFF: Front passenger seat belt fastened

      		 Perform the inspection while sitting in the front passenger side seat.

      Body Electrical > Combination Meter > Data List
      Tester Display
      P-Seatbelt Buckle SW
      Result
      Result Proceed to
      ON or OFF is displayed on the GTS screen according to the front passenger side seat belt condition and front passenger seat condition (occupied or unoccupied) A
      ON or OFF is not displayed normally on the GTS screen according to the front passenger side seat belt condition (for LHD) B
      ON or OFF is not displayed normally on the GTS screen according to the front passenger side seat belt condition (for RHD) C

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

    CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY RH - COMBINATION METER ASSEMBLY AND BODY GROUND)


    1. Disconnect the N17 front seat inner belt assembly RH connector.

    2. Disconnect the G10 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N17-3 (+) - G10-4 (P/SB) Always Below 1 Ω
      N17-2 (E) - Body ground Always Below 1 Ω
      N17-3 (+) or G10-4 (P/SB) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH


    1. Remove the front seat inner belt assembly RH.


    2. Inspect the front seat inner belt assembly RH.


      Result
      Result Proceed to
      OK A
      NG (for Manual Seat) B
      NG (for Power Seat) C
      NG (for Bench Seat Type) D

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    D

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here

    A

  4. INSPECT SEPARATE TYPE FRONT SEAT CUSHION PAD (OCCUPANT DETECTION SENSOR)


    1. Remove the separate type front seat cushion pad (occupant detection sensor).

      Click here

    2. Inspect the separate type front seat cushion pad (occupant detection sensor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE SEPARATE TYPE FRONT SEAT CUSHION PAD (OCCUPANT DETECTION SENSOR) Click here

  5. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND)


    1. Disconnect the N18 front seat inner belt assembly LH connector.

    2. Disconnect the G10 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N18-3 (+) - G10-4 (P/SB) Always Below 1 Ω
      N18-2 (E) - Body ground Always Below 1 Ω
      N18-3 (+) or G10-4 (P/SB) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH


    1. Remove the front seat inner belt assembly LH.


    2. Inspect the front seat inner belt assembly LH.


      Result
      Result Proceed to
      OK A
      NG (for Manual Seat) B
      NG (for Power Seat) C
      NG (for Bench Seat Type) D

    A

    GO TO STEP 4 Click here

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    D

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here