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 assembly (for Front Passenger Side) 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 on the multi-display assembly*1 or clock assembly*2 blinks. If the seat belt is fastened, the warning light goes off.


WIRING DIAGRAM

A01WZIRE02

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      except Double Swing Out Type A
      for Double Swing Out Type B

    B

    READ VALUE USING INTELLIGENT TESTER (PASSENGER SIDE BUCKLE SWITCH) Click here

    A

  2. 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

  3. READ VALUE USING INTELLIGENT TESTER (PASSENGER SIDE BUCKLE SWITCH)


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

      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 is occupied, front passenger side seat belt is fastened

      OFF: Front passenger side seat is occupied, front passenger side seat belt is unfastened

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

    NG

    CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT - COMBINATION METER AND BODY GROUND) Click here

    OK

  4. 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
      Front Passenger Side Seat Belt Front passenger side seat belt warning light ON or 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 (w/ Navigation System) A
      Front passenger side seat belt warning light condition cannot be switched by Active Test (w/o Navigation System) B
      Front passenger side seat belt warning light condition can be switched by Active Test (w/ Multi-information Display) C
      Front passenger side seat belt warning light condition can be switched by Active Test (w/o Multi-information Display) D

    B

    CHECK HARNESS AND CONNECTOR (CLOCK - COMBINATION METER, BATTERY AND BODY GROUND) Click here

    C

    REPLACE COMBINATION METER ASSEMBLY Click here

    D

    REPLACE COMBINATION METER ASSEMBLY Click here

    A

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


    1. Disconnect the F79 multi-display assembly connectors.

    2. Disconnect the E7 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F79-9 (PBEW) - E7-22 (WRNP) Always Below 1 Ω
      F79-9 (PBEW) or E7-22 (WRNP) - Body ground Always 10 kΩ or higher
      F79-13 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F79-23 (IG) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK MULTI-DISPLAY ASSEMBLY


    1. A01X9AQE01
      Text in Illustration
      *1

      Component without harness connected

      (Multi-display Assembly)

      Disconnect the F79 multi-display assembly connectors.

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

      OK
      Measurement Connection Specified Condition

      Battery Positive (+) → 23 (IG)

      Battery negative (-) → 9 (PBEW)

      Battery negative (-) → 13 (GND1)

      		 Front passenger side seat belt warning light on
      Result
      Result Proceed to
      NG A
      OK (w/ Multi-information Display) B
      OK (w/o Multi-information Display) C

    A

    REPLACE MULTI-DISPLAY ASSEMBLY Click here

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

    REPLACE COMBINATION METER ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR (CLOCK - COMBINATION METER, BATTERY AND BODY GROUND)


    1. Disconnect the g1 clock assembly connector.

    2. Disconnect the E7 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
      g1-1 (E) - Body ground Always Below 1 Ω
      g1-8 (LAPL) - Body ground Always 10 kΩ or higher
      g1-8 (LAPL) - E7-22 (WRNP) Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      g1-10 (IG+) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK CLOCK ASSEMBLY


    1. A01X2EQE07
      Text in Illustration
      *1

      Component without harness connected

      (Clock Assembly)

      Disconnect the g1 clock assembly connector.

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

      OK
      Measurement Connection Specified Condition

      Battery Positive (+) → 10 (IG+)

      Battery negative (-) → 8 (LAPL)

      Battery negative (-) → 1 (E)

      		 Front passenger seat belt warning light Illuminates
      Result
      Result Proceed to
      NG A
      OK (w/ Multi-information Display) B
      OK (w/o Multi-information Display) C

    A

    REPLACE CLOCK ASSEMBLY Click here

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

    REPLACE COMBINATION METER ASSEMBLY Click here

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


    1. Disconnect the c7*1 or c22*2 front seat inner belt assembly (for Front Passenger Side) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the E7 combination meter assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      c7-3 - E7-7 (P/SB) Always Below 1 Ω
      c7-3 or E7-7 (P/SB) - Body ground Always 10 kΩ or higher
      c7-4 - Body ground Always Below 1 Ω
      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      c22-3 - E7-7 (P/SB) Always Below 1 Ω
      c22-3 or E7-7 (P/SB) - Body ground Always 10 kΩ or higher
      c22-4 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01X9MI

      Remove the front separate type seat cushion pad.


    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
      Result
      Result Proceed to
      OK A
      NG (for Manual Seat) B
      NG (for Power Seat) C
      NG (for Bench Seat) D

    B

    REPLACE FRONT SEPARATE TYPE SEAT CUSHION PAD Click here

    C

    REPLACE FRONT SEPARATE TYPE SEAT CUSHION PAD Click here

    D

    REPLACE FRONT SEPARATE TYPE SEAT CUSHION PAD Click here

    A

  11. REPLACE FRONT SEAT INNER BELT ASSEMBLY (for Front Passenger Side)


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


      • *1: for LHD

      • *2: for RHD



    NEXT

  12. 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.
      Result
      Result Proceed to
      OK A
      NG (w/ Multi-information Display) B
      NG (w/o Multi-information Display) C

    A

    END (FRONT SEAT INNER BELT ASSEMBLY IS DEFECTIVE)

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

    REPLACE COMBINATION METER ASSEMBLY Click here

  13. READ VALUE USING INTELLIGENT TESTER (PASSENGER SIDE BUCKLE SWITCH)


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

      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 is occupied, front passenger side seat belt is fastened

      OFF: Front passenger side seat is occupied, front passenger side seat belt is unfastened

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

    NG

    INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Front Passenger Side) Click here

    OK

  14. 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
      Front Passenger Side Seat Belt Front passenger side seat belt warning light ON or OFF Confirm that the vehicle is stopped and the engine is idling.
      OK
      Passenger side seat belt warning light condition can be switched by Active Test.

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

  15. CHECK HARNESS AND CONNECTOR (CLOCK - COMBINATION METER, BATTERY AND BODY GROUND)


    1. Disconnect the g1 clock assembly connector.

    2. Disconnect the E7 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
      g1-1 (E) - Body ground Always Below 1 Ω
      g1-8 (LAPL) - E7-22 (WRNP) Always Below 1 Ω
      g1-8 (LAPL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. CHECK CLOCK ASSEMBLY


    1. A01X2EQE08
      Text in Illustration
      *1

      Component without harness connected

      (Clock Assembly)

      Disconnect the g1 clock assembly connector.

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

      OK
      Measurement Connection Specified Condition

      Battery Positive (+) → 10 (IG+)

      Battery negative (-) → 8 (LAPL)

      Battery negative (-) → 1 (E)

      		 Front passenger seat belt warning light Illuminates

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE CLOCK ASSEMBLY Click here

  17. INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Front Passenger Side)


    1. A01X3NM

      Remove the front seat inner belt assembly (for Front Passenger Side).


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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      13 - 9 Seat belt unfastened (buckle switch is off) Below 1 Ω
      Seat belt fastened (buckle switch is on) 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (except Bench Seat) B
      NG (for Bench seat) C

    B

    REPLACE FRONT SEAT INNER BELT ASSEMBLY (for Front Passenger Side) Click here

    C

    REPLACE FRONT SEAT INNER BELT ASSEMBLY (for Front Passenger Side) Click here

    A

  18. INSPECT FRONT SEPARATE TYPE SEAT CUSHION PAD


    1. A01X9MI

      Remove the front separate type seat cushion pad.


    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
      Result
      Result Proceed to
      OK A
      NG (except Bench Seat) B
      NG (for Bench Seat) C

    B

    REPLACE FRONT SEPARATE TYPE SEAT CUSHION PAD Click here

    C

    REPLACE FRONT SEPARATE TYPE SEAT CUSHION PAD Click here

    A

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


    1. Disconnect the L49*1 or K43*2 front seat inner belt assembly (for Front Passenger Side) connector.

    2. Disconnect the E7 combination meter assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      L49-13 - E7-7 (P/SB) Always Below 1 Ω
      L49-13 or E7-7 (P/SB) - Body ground Always 10 kΩ or higher
      L49-9 - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      K43-13 - E7-7 (P/SB) Always Below 1 Ω
      K43-13 or E7-7 (P/SB) - Body ground Always 10 kΩ or higher
      K43-9 - Body ground Always Below 1 Ω

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR