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

DESCRIPTION

w/ Navigation System:

The combination meter detects the state of the front seat inner belt assembly RH when the front passenger seat is occupied with the engine switch on (IG). If the front passenger seat belt is not fastened, the front seat belt warning light on the clock assembly blinks. If the seat belt is fastened, the warning light goes off.

w/o Navigation System:

The combination meter detects the state of the front seat inner belt assembly RH when the front passenger seat is occupied with the engine switch on (IG). If the front passenger seat belt is not fastened, the front seat belt warning light on the integration control and panel assembly blinks. If the seat belt is fastened, the warning light goes off.

WIRING DIAGRAM

A0162SPE03
A0162SPE04

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Operate the intelligent tester according to the steps on the display and select "Active Test".

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Indicat. lamp P-seat Belt P-SEAT BELT indicator light OFF/ON Confirm that the vehicle is stopped with the engine idling
      OK
      Switch condition (ON/OFF) can be switched by "Active Test".
      Result
      Result Proceed to
      OK A
      NG (w/o Navigation System) B
      NG (w/ Navigation System) C

    B

    CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BATTERY) Click here

    C

    CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - BATTERY) Click here

    A

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


    1. A01622HE03

      Disconnect the occupant detection sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-1 - A-3 The passenger seat is occupied Below 100 Ω
      A-1 - A-3 The passenger seat is not occupied Below 1 MΩ

    NG

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

    OK

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


    1. for LHD:


      1. Disconnect the front seat inner belt assembly RH connector.

        A0160P7E02

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J35-4 (P/SB) - T3-1 (WS+) Always Below 1 Ω

    2. for RHD:


      1. Disconnect the front seat inner belt assembly LH connector.

        A0160P7E03

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J35-4 (P/SB) - U4-1 (WS+) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT (PASSENGER SIDE) - BODY GROUND)


    1. for LHD:


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

        A0162HAE01
        Standard Resistance
        Tester Connection Condition Specified Condition
        T3-4 (E) - Body ground Always Below 1 Ω

    2. for RHD:


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

        A0162HAE02
        Standard Resistance
        Tester Connection Condition Specified Condition
        U4-4 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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


    NEXT

  6. CHECK FRONT PASSENGER SEAT BELT WARNING LIGHT OPERATION


    1. Check front passenger seat belt warning light operation Click here.

      OK
      The front passenger seat belt warning light normally operates.

    NG

    REPLACE COMBINATION METER Click here

    OK

    END

  7. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BATTERY)


    1. A0163AME04

      Disconnect the integration control and panel assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J54-4 (IG+) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECU-IG RH FUSE)

    OK

  8. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - COMBINATION METER)


    1. A015YGQE04

      Disconnect the combination meter connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J35-3 (PBLT) - J54-13 (PBEW) Always Below 1 Ω
      J35-3 (PBLT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY


    1. Remove the integration control and panel assembly with the connector still connected Click here.

    2. A015Z22E03

      Apply battery voltage from the wire harness back side between the terminals of the indicator, and check the lighting condition of the front passenger side seat belt warning light.

      Standard Voltage
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal J54-4 (IG+)

      Battery negative (-) → Terminal J54-13 (PBEW)

      		 Lights up (Seat belt warning light)
      OK
      The seat belt warning light lights up.

    NG

    REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER Click here

  10. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - BATTERY)


    1. A01638HE06

      Disconnect the clock assembly connector.

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

      Standard
      Tester Connection Condition Specified Condition
      J105-15 (IG+) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECU-IG RH FUSE)

    OK

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


    1. A0161TPE02

      Disconnect the combination meter connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J105-12 (PBEW) - J35-3 (PBLT) Always Below 1 Ω
      J105-12 (PBEW) - Body ground Always 10 kΩ or higher
      J35-3 (PBLT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT CLOCK ASSEMBLY


    1. A01638HE07

      Remove the clock assembly with the connector still connected Click here.

    2. Apply battery voltage from the wire harness back side between the terminals of the indicator, and check the lighting condition of the front passenger side seat belt warning light.

      Standard Voltage
      Measurement Condition Specified Condition

      Battery position(+) → Terminal J105-15(IG+)

      Battery position(-) → Terminal J105-12(PBEW)

      		 Lights up (Seat belt warning light)
      OK
      The front passenger seat belt warning light lights up.

    NG

    REPLACE CLOCK ASSEMBLY Click here

    OK

    REPLACE COMBINATION METER Click here