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

DESCRIPTION

The belt warning occupant detection sensor detects if the passenger seat is occupied and sends signals to the combination meter assembly. the front seat inner belt (for front passenger) detects the passenger seat belt condition and sends signals to the combination meter assembly. After receiving the signals from the belt warning occupant detection sensor and front seat inner belt (for front passenger), the seat belt warning light in the telltale light assembly will blink or go off.

WIRING DIAGRAM

A004JT5E03

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.

      OK
      ON or OFF appears on the GTS screen according to the front passenger seat belt condition.
      Combination Meter
      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 fastened

      OFF: Front passenger seat belt not fastened

      		 -

    NG

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

    OK

  2. PERFORM ACTIVE TEST USING GTS (AIRBAG SYSTEM)


    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 / Active Test.

    5. Perform the Active Test according to the display on the GTS.

      OK
      Front passenger side seat belt warning light condition can be switched by Active Test.
      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Front Passenger Side Seat Belt Front passenger side seat belt warning light ON/OFF -

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

  3. INSPECT CLOCK ASSEMBLY


    1. Remove the clock assembly Click here.

    2. A004HJUE01
      Text in Illustration
      *a

      Component without harness connected

      (Clock assembly)

      Apply battery voltage to the connector and check the illumination condition.

      Result
      Condition Specified Condition

      Battery positive (+) → 10 (LAPB)

      Battery negative (-) → 6 (LAPL)

      		 Front passenger side seat belt warning light comes on

    NG

    REPLACE CLOCK ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (BATTERY - CLOCK ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the D18 clock assembly connector.

    2. Disconnect the D7 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D18-6 (LAPL) - D7-13 (P/SB) Always Below 1 Ω
      D18-6 (LAPL) - Body ground Always 10 kΩ or higher

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D18-10 (LAPB) - Body ground Ignition switch ON 11 to 14 V

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. 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

  6. INSPECT FRONT SEAT INNER BELT ASSEMBLY (FOR FRONT PASSENGER)


    1. Inspect the front seat inner belt assembly (for front passenger) Click here.


    NG

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

    OK

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


    1. Disconnect the G3 front seat inner belt assembly connector. (for LHD)

    2. Disconnect the H19 front seat inner belt assembly connector. (for RHD)

    3. Disconnect the D7 combination meter assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G3-1 - D7-38 (PBKL) Always Below 1 Ω
      G3-1 - Body ground Always 10 kΩ or higher
      G3-2 - Body ground Always Below 1 Ω
      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      H19-1 - D7-38 (PBKL) Always Below 1 Ω
      H19-1 - Body ground Always 10 kΩ or higher
      H19-2 - Body ground Always Below 1 Ω

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR