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

DESCRIPTION

The occupant detection sensor (separate type front seat cushion pad) detects if the passenger seat is occupied and sends signals to the combination meter assembly. The front seat inner belt assembly RH detects the front 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) and front seat inner belt assembly RH, the seat belt warning light on the combination meter assembly will blink or go off.

Tech Tips

The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.

WIRING DIAGRAM

A0007AFE04
*a PBKL
*b Occupant Detection Sensor (Separate Type Front Seat Cushion Pad)
*c Front Seat Inner Belt Assembly RH
*d Combination Meter Assembly

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    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.

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

      ON: Front passenger seat belt unfastened

      OFF: Front passenger seat belt fastened

      		 The front passenger seat is occupied
      OK
      ON or OFF appears on the GTS screen according to the front passenger seat belt condition.

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - OCCUPANT DETECTION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION PAD))


    1. Disconnect the H14 combination meter assembly connector.

    2. Disconnect the W7 occupant detection sensor (separate type front seat cushion pad) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H14-10 (PBKL) - W7-3 Always Below 1 Ω
      H14-10 (PBKL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (OCCUPANT DETECTION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION PAD) - FRONT SEAT INNER BELT ASSEMBLY RH)


    1. Disconnect the W15 front seat inner belt assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W7-1 - W15-3 Always Below 1 Ω
      W7-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY RH - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W15-2 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A0004NDE01
      Text in Illustration
      *a

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

    NG

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

    OK

  6. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH


    1. A0004V6E04
      Text in Illustration
      *a

      Component without harness connected

      (Front Seat Inner Belt Assembly RH)

      Remove the front seat inner belt assembly RH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 - 3 Front passenger seat belt unfastened Below 1 Ω
      2 - 3 Front passenger seat belt fastened 10 kΩ or higher

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here