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

DESCRIPTION

When the passenger seat belt is not fastened with the ignition switch ON and the passenger seat occupied, the passenger seat belt warning light display blinks. The occupant detection sensor detects if the passenger seat is occupied and sends signals to the combination meter assembly. The inner belt detects the passenger seat belt condition and sends signals to the combination meter assembly. After receiving the signals from the occupant detection sensor and inner belt, the combination meter assembly sends signals to the clearance warning indicator assembly (front passenger seat belt warning light) to request the passenger seat belt warning light to blink or go off.

WIRING DIAGRAM

A01BFMTE02

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT FUSE (IG1)


    1. A01BGU3E03

      Remove the MET GAUGE fuse from the instrument panel J/B.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      GAUGE fuse Always Below 1 Ω

    3. Reinstall the GAUGE fuse.


    NG

    REPLACE FUSE (GAUGE)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE, BODY GROUND)


    1. A01BBA6E01

      Disconnect the H15 front passenger seat belt warning light assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      H15-7 (BD) - Body ground Ignition switch OFF → ON Below 1 V → 10 to 14 V
      H15-8 (DOSW) - Body ground Seat belt is unfastened, front passenger seat occupied → Seat belt is fastened, front passenger seat occupied 10 to 14 V → Below 1 V

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

      Standard resistance
      Tester Connection Condition Specified Condition
      H15-1 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT PASSENGER SEAT BELT WARNING LIGHT


    1. A01BDX9E01

      Check the front passenger seat belt warning light condition.


      1. Apply battery voltage to the connector according to the table below.

        OK
        Connection Specified Condition

        Battery positive (+) → 7 (BD)

        Battery negative (-) → 8 (DOSW) and 1 (E)

        		 Seat belt warning light comes on

    NG

    REPLACE PASSENGER SEAT BELT WARNING LAMP ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SEAT BELT WARNING LIGHT - COMBINATION METER ASSEMBLY)


    1. A01BAZ3E01

      Disconnect the H20 combination meter assembly connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      H20-28 (PBLT) - H15-8 (DOSW) Always Below 1 Ω
      H20-28 (PBLT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01BDIHE01

      Disconnect the R1 front seat inner belt assembly (passenger side) connector.

    2. Disconnect the occupant detection sensor connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A-2 (RBE-) - B-1 Tongue plate fastened 10 kΩ or higher
      Tongue plate unfastened Below 1 Ω
      A-2 (RBE-) - Body ground Always 10 kΩ or higher
      B-2 - Body ground Always 10 kΩ or higher
      A-1 (+) - B-2 Always Below 1 Ω
      A-1 (+) or B-2 - Body ground Always 10 kΩ or higher

    NG

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

    OK

  6. INSPECT OCCUPANT DETECTION SENSOR

    A01BB5VE01

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

      Standard resistance
      Tester Connection Condition Specified Condition
      1 - 2 Passenger seat is occupied Below 100 Ω
      1 - 2 Passenger seat is not occupied 1 MΩ or higher

    NG

    REPLACE SEPARATE TYPE FRONT SEAT CUSHION PAD Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT SEAT INNER BELT ASSEMBLY)


    1. A01BAPSE01

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

      Standard resistance
      Tester Connection Condition Specified Condition
      H20-34 (P/SB) - R1-2 (+) Always Below 1 Ω
      H20-34 (P/SB) - Body ground Always 10 kΩ or higher
      R1-1 (RBE-) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here