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

DESCRIPTION

When the front passenger side seat belt is not fastened with the power switch on (IG) and the front passenger side seat occupied, the front passenger side seat belt warning light blinks. The occupant detection sensor detects if the front passenger side seat is occupied and sends signals to the combination meter assembly. The front seat inner belt assembly detects the front passenger side seat belt condition and sends signals to the combination meter assembly. After receiving the signals from the occupant detection sensor and front seat inner belt assembly, the combination meter illuminates the front passenger side seat belt warning light.

WIRING DIAGRAM

A01JBWDE01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Combination Meter / Data List.

    5. Read the Data List according to the display on the intelligent tester.

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

      ON: Front passenger side seat belt fastened.

      OFF: Front passenger side seat belt not fastened.

      		 -
      OK
      ON or OFF appears on the tester screen according to the front passenger side seat belt condition.

    NG

    CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE SEAT INNER BELT - COMBINATION METER) Click here

    OK

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Combination Meter / Active Test.

    5. Perform the Active Test according to the display on the intelligent tester.

      Combination Meter (Combination Meter Assembly)
      Tester Display Test Part Control Range Diagnostic Note
      Front Passenger Side Seat Belt Front passenger side seat belt warning light OFF or ON Confirm that the vehicle is stopped with the engine idling.
      OK
      The front passenger side seat belt warning light on the air conditioning control assembly operates normally.

    NG

    CHECK HARNESS AND CONNECTOR (PASSENGER SEAT BELT WARNING LIGHT - BATTERY) Click here

    OK

    REPLACE NO. 3 METER CIRCUIT PLATE Click here

  3. CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE SEAT INNER BELT - COMBINATION METER)


    1. A01JCD0E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *2

      Front view of wire harness connector

      (to Front Seat Inner Belt Assembly (Front Passenger Side))
      *3 for LHD
      *4 for RHD

      Disconnect the L27 meter connector.

    2. Disconnect the S22*1 or R5*2 belt connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      L27-24 (SW) - S22-3 (+)*1

      L27-24 (SW) - R5-3 (+)*2

      		 Always Below 1 Ω
      L27-24 (SW) - Body ground Always 10 kΩ or higher

      S22-2 (E) - Body ground*1

      R5-2 (E) - Body ground*2

      		 Always Below 1 Ω

      • *1: for LHD

      • *2: for RHD


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01J9EWE04
      Text in Illustration
      *1

      Component without harness connected

      (Occupant Detection Sensor (Separate Type Front Seat Cushion Pad))

      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
      B-1 - B-3 Front passenger side seat occupied Below 100 Ω
      B-1 - B-3 Front passenger side seat not occupied 1 MΩ or higher

    NG

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

    OK

  5. INSPECT FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SIDE)


    1. A01JCA4E09
      Text in Illustration
      *1

      Component without harness connected

      (Front Seat Inner Belt Assembly (Front Passenger Side))
      *2

      Front view of wire harness connector

      (to Occupant Detection Sensor (Separate Type Front Seat Cushion Pad))
      *3 for LHD
      *4 for RHD

      Remove the front seat inner belt assembly (front passenger side) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      S22-3 (+) - B-1*1

      R5-3 (+) - B-1*2

      		 Always Below 1 Ω

      S22-2 (E) - B-3*1

      R5-2 (E) - B-3*2

      		 Front passenger side seat belt unfastened Below 1 Ω

      S22-2 (E) - B-3*1

      R5-2 (E) - B-3*2

      		 Front passenger side seat belt fastened 10 kΩ or higher

      • *1: for LHD

      • *2: for RHD


    NG

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

    OK

    REPLACE NO. 3 METER CIRCUIT PLATE Click here

  6. CHECK HARNESS AND CONNECTOR (PASSENGER SEAT BELT WARNING LIGHT - BATTERY)


    1. A01J94AE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Passenger Seat Belt Warning Light Assembly)

      Disconnect the M2 connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      M2-6 (IG+) - Body ground Power switch on (IG) 11 to 14 V
      M2-6 (IG+) - Body ground Power switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - PASSENGER SEAT BELT WARNING LIGHT)


    1. A01JCXGE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *2

      Front view of wire harness connector

      (to Passenger Seat Belt Warning Light Assembly)

      Disconnect the L27 connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L27-21 (PBLT) - M2-3 (PBEW) Always Below 1 Ω
      L27-21 (PBLT)- Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (COMBINATION METER - BATTERY)


    1. Reconnect the M2 connector.

    2. A01J901E03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L27-21 (PBLT) - Body ground Power switch on (IG) 11 to 14 V
      L27-21 (PBLT) - Body ground Power switch off Below 1 V

    NG

    REPLACE PASSENGER SEAT BELT WARNING LIGHT ASSEMBLY Click here

    OK

    REPLACE NO. 3 METER CIRCUIT PLATE Click here