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

DESCRIPTION

The combination meter detects the state of the front seat inner belt RH*1(or LH*2) when the front passenger seat is occupied with the engine switch on (IG). If the front passenger seat belt is not fastened, the front passenger side seat belt warning light on the multi-display blinks. If the seat belt is fastened, the warning light goes off.


WIRING DIAGRAM

A01ESJEE01

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.

      Result
      Result Proceed to
      DTC is not output A
      CAN communication system DTC is output (for LHD) B
      CAN communication system DTC is output (for RHD) C
      Airbag system DTC is output D

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    D

    GO TO AIRBAG SYSTEM Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT)


    1. Operate the intelligent tester according to the steps on the display and select "Active Test".

      Combination Meter
      Item Test Part Control Range Diagnostic Note
      Indicat. Lamp P-Seat Belt Front passenger side seat belt warning light ON or OFF Confirm that the Vehicle is Stopped and Engine Idling
      Result
      Result Proceed to
      Front passenger side seat belt warning light condition cannot be switched by "Active Test" A
      Front passenger side seat belt warning light condition can be switched by "Active Test" B

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY Click here

    A

  3. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMBINATION METER, BATTERY AND BODY GROUND)


    1. Disconnect the F78 multi-display connectors.

    2. Disconnect the E77 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F78-9 (PBEW) - E77-39 (WRNP) Always Below 1 Ω
      F78-13 (GND1) - Body ground Always Below 1 Ω
      F78-9 (PBEW) - Body ground Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F78-23 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK MULTI-DISPLAY ASSEMBLY


    1. A01EPYQE04
      Text in Illustration
      *1

      Component without harness connected

      (Multi-display)

      Disconnect the multi-display connectors.

    2. Apply battery voltage to the terminals and check that the front passenger seat belt warning light illuminates.

      OK
      Measurement Connection Specified Condition

      Positive battery → 23 (IG)

      Negative battery → 9 (PBEW)

      Negative battery → 13 (GND1)

      		 Front passenger seat belt warning light Illuminates

    NG

    REPLACE MULTI-DISPLAY ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  5. REPLACE FRONT SEAT INNER BELT ASSEMBLY


    1. Temporarily replace the front seat inner belt RH*1 or LH*2 with a new one Click here.


      • *1: for LHD

      • *2: for RHD


    NEXT

  6. CHECK FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT


    1. Check the front passenger side seat belt warning light function Click here.

      OK
      Front passenger side seat belt warning light operates normally.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    END (FRONT SEAT INNER BELT IS DEFECTIVE)