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 RH*1 (or LH*2) when the front passenger seat is occupied with the ignition switch ON. If the front passenger seat belt is not fastened, the front seat belt warning light in the combination meter blinks. If the seat belt is fastened, the warning light goes 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

A01DQRME01

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


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

      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 belt fastened

      OFF: Front passenger side seat belt unfastened

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

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

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


    1. A01DSR6

      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
      1 - 3 More than 147 N (15 kgf, 33.0 lbf) applied to occupant detection sensor Below 100 Ω

    NG

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

    OK

  3. INSPECT FRONT SEAT INNER BELT ASSEMBLY


    1. A01DPJIE03

      Remove the front seat inner belt assembly RH*1 or LH*2 Click here.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (E) - 3 Always Below 1 Ω
      3 (+) - 1 Front passenger side seat belt unfastened
      3 (+) - 1 Front passenger side seat belt fastened 10 kΩ or higher

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY Click here

    OK

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


    1. Disconnect the G7 meter connector.

    2. Disconnect the Q21*1 or R34*2 inner belt connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G7-15 (P/SB) - Q21-3 (+) Always Below 1 Ω
      Q21-2 (E) - Body ground
      G7-15 (P/SB) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      G7-15 (P/SB) - R34-3 (+) Always Below 1 Ω
      R34-2 (E) - Body ground
      G7-15 (P/SB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here