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 on the radio receiver assembly*1 or accessory meter assembly*2 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 on the radio receiver assembly*1 or accessory meter assembly*2.


WIRING DIAGRAM

A01NF10E04

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/OFF or ON

      OFF: Front passenger side seat belt fastened with the front passenger side seat occupied or the front passenger side seat not occupied.

      ON: Front passenger side seat belt not fastened with the front passenger side seat occupied.

      		 -
      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 / Data List.

    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

    SYSTEM CHECK Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

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


    1. A01NGXXE07
      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 F15 meter connector.

    2. Disconnect the Z7*3 or a5*4 belt connector.


      • *3: for LHD

      • *4: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      F15-10 (P/SB) - Z7-1 (WS+)*3

      F15-10 (P/SB) - a5-1 (WS+)*4

      		 Always Below 1 Ω
      F15-10 (P/SB) - Body ground Always 10 kΩ or higher

      Z7-4 (E) - Body ground*3

      a5-4 (E) - Body ground*4

      		 Always Below 1 Ω

      • *3: for LHD

      • *4: for RHD


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01NER1E03
      Text in Illustration
      *1

      Component without harness connected

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

      Remove the occupant detection sensor (separate type front seat cushion pad) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-1 - A-3 Front passenger side seat occupied Below 100 Ω
      A-1 - A-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. A01NCY1E06
      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

      Z7-1 (WS+) - A-1*3

      a5-1 (WS+) - A-1*4

      		 Always Below 1 Ω

      Z7-4 (E) - A-3*3

      a5-4 (E) - A-3*4

      		 Front passenger side seat belt unfastened Below 1 Ω

      Z7-4 (E) - A-3*3

      a5-4 (E) - A-3*4

      		 Front passenger side seat belt fastened 10 kΩ or higher

      • *3: for LHD

      • *4: for RHD


    NG

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

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  6. SYSTEM CHECK


    1. Check the vehicle specification.

      Result
      Result Proceed to
      w/ Navigation System A
      w/o Navigation System B

    B

    CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - AUXILIARY BATTERY) Click here

    A

  7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - AUXILIARY BATTERY)


    1. A01NHJNE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the G8 connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G8-15 (IG+) - Body ground Power switch on (IG) 11 to 14 V
      G8-15 (IG+) - Body ground Power switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO RECEIVER ASSEMBLY)


    1. A01NDB3E04
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *2

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the F16 meter connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F16-12 (PBLT) - G8-2 (PBEW) Always Below 1 Ω
      F16-12 (PBLT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - AUXILIARY BATTERY)


    1. A01NHQCE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)

      Reconnect the G8 connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F16-12 (PBLT) - Body ground Power switch on (IG) 11 to 14 V
      F16-12 (PBLT) - Body ground Power switch off Below 1 V

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  10. CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - AUXILIARY BATTERY)


    1. A01NEF9E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      Disconnect the G1 connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G1-2 (IG2) - Body ground Power switch on (IG) 11 to 14 V
      G1-2 (IG2) - Body ground Power switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ACCESSORY METER ASSEMBLY)


    1. A01NCYEE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)
      *2

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      Disconnect the F16 meter connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F16-12 (PBLT) - G1-6 (PBEW) Always Below 1 Ω
      F16-12 (PBLT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - AUXILIARY BATTERY)


    1. A01NEF9E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Combination Meter Assembly)

      Reconnect the G1 connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F16-12 (PBLT) - Body ground Power switch on (IG) 11 to 14 V
      F16-12 (PBLT) - Body ground Power switch off Below 1 V

    NG

    REPLACE ACCESSORY METER ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here