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

DESCRIPTION

When the ignition switch is turned to ON, the combination meter assembly monitors the state of the passenger side seat and the front seat inner belt assembly RH*1 (or LH*2). The combination meter assembly illuminates, blinks or turns off the seat belt warning light on the combination meter according to the parking brake condition, shift lever position, vehicle speed and state of the passenger side seat and front seat inner belt assembly RH*1 (or LH*2).


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

A003HEUE01
A003FE2E01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS (FRONT PASSENGER SIDE 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.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P-Seatbellt Buckle SW* Front passenger side seat belt buckle signal / ON or OFF

      ON: Front passenger side seat belt unfastened

      OFF: Front passenger side seat belt fastened

      		 Perform the inspection while sitting in the front passenger side seat.
      OK
      The display is as specified in the normal condition column.
      Result
      Result Proceed to
      OK A
      NG (for Separate Seat Type) B
      NG (except Separate Seat Type) C

    B

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

    C

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION PAD) Click here

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

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


    1. Disconnect the H20 combination meter assembly connector.

    2. Disconnect the B77*1 or R1*2 front seat inner belt assembly 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
      H20-30 (P/SB) - B77-2 Always Below 1 Ω
      H20-30 (P/SB) - Body ground Always 10 kΩ or higher
      B77-1 - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      H20-30 (P/SB) - R1-2 Always Below 1 Ω
      H20-30 (P/SB) - Body ground Always 10 kΩ or higher
      R1-1 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

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


    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SIDE) 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).


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

      Result
      Result Proceed to
      OK A
      NG (for Hi-back Seat Type) B
      NG (for Low-back Seat Type) C

    B

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

    C

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

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SEPARATE TYPE FRONT SEAT CUSHION PAD)


    1. Disconnect the H20 combination meter assembly connector.

    2. Disconnect the R4 separate type front seat cushion pad (occupant detection sensor) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H20-30 (P/SB) - R4-1 Always Below 1 Ω
      H20-30 (P/SB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - SEPARATE TYPE FRONT SEAT CUSHION PAD AND BODY GROUND)


    1. Disconnect the R3 front seat inner belt assembly LH connector.

    2. Disconnect the R4 separate type front seat cushion pad (occupant detection sensor) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R3-2 - R4-2 Always Below 1 Ω
      R3-2 - Body ground Always 10 kΩ or higher
      R3-1 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. 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.


    NG

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

    OK

  8. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH


    1. Remove the front seat inner belt assembly LH Click here.

    2. Inspect the front seat inner belt assembly LH Click here.


    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here