SEAT BELT WARNING SYSTEM(w/o Occupant Classification System) Front Passenger Side Seat Belt Warning Light does not Operate

DESCRIPTION

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

WIRING DIAGRAM

A003NTUE10

CAUTION / NOTICE / HINT

Tech Tips

The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.Check that the operation of the seat belt warning light is normal first.

Click here

If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the meter circuit plate.

Click here

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    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.


      Body Electrical > Combination Meter > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      P-Seatbelt Buckle SW Front passenger seat belt buckle switch signal ON or OFF

      OFF: Front passenger seat belt fastened

      ON: Front passenger seat belt not fastened

      		 -
      Passenger Occupant Detection Switch Occupant detection sensor signal ON or OFF

      ON: Front passenger seat occupied

      OFF: Front passenger seat not occupied

      		 -

      Body Electrical > Combination Meter > Data List
      Tester Display
      P-Seatbelt Buckle SW
      Passenger Occupant Detection Switch
      OK
      The GTS display changes correctly in response to the front passenger seat belt and front passenger seat condition.
      Result
      Result Proceed to
      OK A
      NG (P-Seatbelt Buckle SW) B
      NG (Passenger Occupant Detection Switch) C

    A

    REPLACE METER CIRCUIT PLATE Click here

    C

    INSPECT FRONT SEAT INNER BELT ASSEMBLY LH Click here

    B

  2. INSPECT FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT)


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

      Click here

    2. Inspect the front seat inner belt assembly (front passenger seat) (seat belt warning switch).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. CHECK HARNESS AND CONNECTOR (METER CIRCUIT PLATE - FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT) - BODY GROUND)


    1. Disconnect the I6 meter circuit plate connector.

    2. Disconnect the N85*1 or N89*2 front seat inner belt assembly (front passenger seat) 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
      I6-14 (PBKL) - N85-3 (+) Always Below 1 Ω
      I6-14 (PBKL) or N85-3 (+) - Body ground Always 10 kΩ or higher
      N85-2 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      I6-14 (PBKL) - N89-3 (+) Always Below 1 Ω
      I6-14 (PBKL) or N89-3 (+) - Body ground Always 10 kΩ or higher
      N89-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE METER CIRCUIT PLATE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH


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

      Click here

    2. Inspect the front seat inner belt assembly (front passenger seat) (occupant detection sensor line).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Remove the occupant detection sensor (separate type front seat cushion pad (front passenger seat)).

      Click here

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  6. CHECK HARNESS AND CONNECTOR (METER CIRCUIT PLATE - FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT) - BODY GROUND)


    1. Disconnect the I6 meter circuit plate connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      I6-13 (PODS) - N85-5 (+) Always Below 1 Ω
      I6-13 (PODS) or N85-5 (+) - Body ground Always 10 kΩ or higher
      N85-4 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      I6-13 (PODS) - N89-5 (+) Always Below 1 Ω
      I6-13 (PODS) or N89-5 (+) - Body ground Always 10 kΩ or higher
      N89-4 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE METER CIRCUIT PLATE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR