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 (front passenger seat) 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.

WIRING DIAGRAM

A001XRWE02

CAUTION / NOTICE / HINT

Note

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

Tech Tips


  • The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.Check that the operation of the seat belt warning light is normal first.

    Click here

  • If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter assembly.

    Click here

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 B

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

    B

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


    1. Disconnect the F4 combination meter assembly connector.

    2. Disconnect the M53*1 or M51*2 front seat inner belt assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      F4-7 (PKBI) - M53-3 (+) Always Below 1 Ω
      F4-7 (PKBI) or M53-3 (+) - Body ground Always 10 kΩ or higher
      M53-2 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      F4-7 (PKBI) - M51-3 (+) Always Below 1 Ω
      F4-7 (PKBI) or M51-3 (+) - Body ground Always 10 kΩ or higher
      M51-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT)


    1. Remove the front seat inner belt assembly (front passenger seat).

      Click here

    2. Inspect the front seat inner belt assembly (front passenger seat).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT) Click here

    OK

  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