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

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DTC Code DTC Name
  Front Passenger Side Seat Belt Warning Light does not Operate
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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.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Tip:

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.

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

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PROCEDURE


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    READ VALUE USING GTS (PASSENGER BUCKLE SWITCH, PASSENGER OCCUPANT DETECTION SWITCH)


    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.


      1. Body Electrical > Combination Meter > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Passenger Buckle Switch Front passenger seat belt buckle switch signal ON or OFF

        ON: Front passenger seat belt not fastened

        OFF: Front passenger seat belt fastened

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

        ON: Front passenger seat occupied

        OFF: Front passenger seat not occupied

        		 -




      1. Body Electrical > Combination Meter > Data List
        Tester Display
        Passenger Buckle Switch
        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 (Passenger Buckle Switch) B
      NG (Passenger Occupant Detection Switch) C

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    INSPECT FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT)


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

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

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      Result
      Proceed to
      OK
      NG

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


    1. Disconnect the K21 combination meter assembly connector.

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

      Standard Resistance
      Table 1. for LHD
      Tester Connection Condition Specified Condition
      K21-10 (PBKL) - R71-3 (+) Always Below 1 Ω
      K21-10 (PBKL) or R71-3 (+) - Body ground Always 10 kΩ or higher
      R71-2 (E) - Body ground Always Below 1 Ω
      Table 2. for RHD
      Tester Connection Condition Specified Condition
      K21-10 (PBKL) - R70-3 (+) Always Below 1 Ω
      K21-10 (PBKL) or R70-3 (+) - Body ground Always 10 kΩ or higher
      R70-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE COMBINATION METER ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    INSPECT FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT)


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

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

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      Result
      Proceed to
      OK
      NG

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    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)).

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

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      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

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

  6. Click here

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


    1. Disconnect the K21 combination meter assembly connector.

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

      Standard Resistance
      Table 3. for LHD
      Tester Connection Condition Specified Condition
      K21-11 (PODS) - R71-5 (+) Always Below 1 Ω
      K21-11 (PODS) or R71-5 (+) - Body ground Always 10 kΩ or higher
      R71-4 (E) - Body ground Always Below 1 Ω
      Table 4. for RHD
      Tester Connection Condition Specified Condition
      K21-11 (PODS) - R70-5 (+) Always Below 1 Ω
      K21-11 (PODS) or R70-5 (+) - Body ground Always 10 kΩ or higher
      R70-4 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE COMBINATION METER ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR