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 ignition switch ON. If the front passenger seat belt is not fastened, the front passenger side seat belt warning light of the telltale light blinks. If the seat belt is fastened, the warning light goes off.


WIRING DIAGRAM

A0097W5E01

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Check the Data List for proper functioning of the front passenger side seat belt buckle switch Click here.

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

      ON: Front passenger side seat belt fastened

      OFF: Front passenger side seat belt unfastened

      		 -
      OK
      The display is as specified in the normal condition column.

    NG

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

    OK

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


    1. Operate the intelligent tester according to the display and select Active Test Click here.

      Combination Meter
      Item Test Part Control Range Diagnostic Note
      Front passenger side seat belt Front passenger side seat belt warning light ON/OFF Confirm that the vehicle is stopped and the engine is 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 COMBINATION METER ASSEMBLY Click here

    A

  3. INSPECT TELLTALE LIGHT ASSEMBLY


    1. A009B0CE01

      Remove the telltale light Click here.

    2. Apply battery voltage to the telltale light.

    3. Check that the front passenger side seat belt warning light comes on.

      OK
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal 5 (LAPB)

      Battery negative (-) → Terminal 1 (LAPL)

      		 Front passenger side seat belt warning light comes on

    NG

    REPLACE TELLTALE LIGHT ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - TELLTALE LIGHT, BATTERY AND BODY GROUND)


    1. Disconnect the G6 meter connector.

    2. Disconnect the G5 telltale light connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G6-17 (WRNP) - G5-1 (LAPL) Always Below 1 Ω
      G6-17 (WRNP) - Body ground Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G5-5 (LAPB) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

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


    1. A00951T

      Remove the front seat assembly Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 3 More than 147 N (15 kgf, 33.0 lbf) applied to occupant detection sensor Below 100 Ω

    NG

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

    OK

  6. INSPECT FRONT SEAT INNER BELT ASSEMBLY


    1. A009AFYE03

      Remove the front seat inner belt assembly RH*1 or LH*2 Click here.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (E) - 3 Always Below 1 Ω
      3 (+) - 1 Front passenger side seat belt unfastened
      3 (+) - 1 Front passenger side seat belt fastened 10 kΩ or higher

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY Click here

    OK

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


    1. Disconnect the G7 meter connector.

    2. Disconnect the Q21*1 or R34*2 inner belt 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
      G7-15 (P/SB) - Q21-3 (+) Always Below 1 Ω
      Q21-2 (E) - Body ground
      G7-15 (P/SB) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      G7-15 (P/SB) - R34-3 (+) Always Below 1 Ω
      R34-2 (E) - Body ground
      G7-15 (P/SB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here