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

DTC Code DTC Name
Front Passenger Side Seat Belt Warning Light Malfunction

DESCRIPTION

  • The combination meter detects the state of the front seat inner belt 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 passenger side seat belt warning light of the heater control switch board*1 or display and navigation module display*2 blinks. If the seat belt is fastened, the warning light goes off.

  • *1: w/o Navigation System

  • *2: w/ Navigation System

WIRING DIAGRAM

C225538E02

CAUTION / NOTICE / HINT

Tip:

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

PROCEDURE

  1. READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE BUCKLE SWITCH)

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

      Click here

      Body Electrical > Combination Meter > Data List

      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.

      Result

      Result

      OK

      NG
    NG

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

    OK

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT)

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

      Click here

      Body Electrical > Combination Meter > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Front Passenger Side Seat Belt

      Front passenger side seat belt warning light

      ON/OFF

      Confirm that the vehicle is stopped and the engine is idling.

      Result

      Result

      Proceed to

      Front passenger side seat belt warning light condition cannot be switched by Active Test (w/o Navigation System)

      A

      Front passenger side seat belt warning light condition cannot be switched by Active Test (w/ Navigation System)

      B

      Front passenger side seat belt warning light condition can be switched by Active Test

      C
    B

    INSPECT DISPLAY AND NAVIGATION MODULE DISPLAYClick here

    C

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    A

  3. INSPECT HEATER CONTROL SWITCH BOARD

    1. C220195E03

      Remove the heater control switch board.

    2. Apply battery voltage to the heater control switch board.

    3. Check that the front passenger side seat belt warning light comes on.

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → Terminal 1 (IG+)

      Battery negative (-) → Terminal 7 (LAPL)

      Front passenger side seat belt warning light comes on

      Result

      Result

      OK

      NG
    NG

    REPLACE HEATER CONTROL SWITCH BOARD

    Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - HEATER CONTROL SWITCH BOARD, BATTERY AND BODY GROUND)

    1. Disconnect the G3 meter connector.

    2. Disconnect the H32 heater control switch board connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G3-18 (WRNP) - H32-7 (LAPL)

      Always

      Below 1 Ω

      G3-18 (WRNP) - Body ground

      Always

      10 kΩ or higher

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      H32-1 (IG+) - Body ground

      Engine switch on (IG)

      11 to 14 V

      Result

      Result

      OK

      NG
    OK

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY

    1. C220196E03

      Remove the display and navigation module display.

      Click here

    2. Apply battery voltage to the display and navigation module display.

    3. Check that the front passenger side seat belt warning light comes on.

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → Terminal 3 (IG)

      Battery negative (-) → Terminal 5 (PBEW)

      Battery negative (-) → Terminal 10 (GND1)

      Front passenger side seat belt warning light comes on

      Result

      Result

      OK

      NG
    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (COMBINATION METER - DISPLAY AND NAVIGATION MODULE DISPLAY, BATTERY AND BODY GROUND)

    1. Disconnect the G3 meter connector.

    2. Disconnect the H4 and H8 display connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G3-18 (WRNP) - H8-5 (PBEW)

      Always

      Below 1 Ω

      H4-10 (GND1) - Body ground

      G3-18 (WRNP) - Body ground

      Always

      10 kΩ or higher

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      H4-3 (IG) - Body ground

      Engine switch on (IG)

      11 to 14 V

      Result

      Result

      OK

      NG
    OK

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. C221167

      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

      Result

      Result

      OK

      NG
    NG

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

    Click here

    OK

  8. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH

    1. C213676C02

      *1

      Connector A

      *2

      Connector B

      *a

      Component without harness connected

      (Front Seat Inner Belt Assembly RH)

      Remove the front seat inner belt assembly RH.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A-2 - B-1

      Seat belt unfastened

      Below 1 Ω

      Seat belt fastened

      10 kΩ or higher

      A-3 - B-3

      Always

      Below 1 Ω

      Result

      Result

      OK

      NG
    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

    Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (COMBINATION METER - FRONT SEAT INNER BELT RH AND BODY GROUND)

    1. Disconnect the G3 meter connector.

    2. Disconnect the a16 inner belt connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G3-12 (P/SB) - a16-3

      Always

      Below 1 Ω

      a16-2 - Body ground

      G3-12 (P/SB) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    OK

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR