SEAT BELT WARNING SYSTEM Rear Seat Belt Warning Light Malfunction

DTC Code DTC Name
Rear Seat Belt Warning Light Malfunction

DESCRIPTION

The combination meter assembly detects whether either front door*1, rear door*2 or back door*2 is open or closed based on the condition of the left and right courtesy light switches. The combination meter assembly also detects the rear seat belt state. The rear seat belt warning lights on the telltale light assembly illuminate or turn off in accordance with the state of each front door*1, rear door*2 or back door*2, vehicle speed and rear seat belt state.

  • *1: for 3 Door

  • *2: for 5 Door

WIRING DIAGRAM

B371360E01

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. READ VALUE USING GTS (DOOR COURTESY LIGHT SWITCH)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    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.

      Body Electrical > Combination Meter > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Driver Side Door

      Front door courtesy light switch assembly (driver door) signal

      OPEN or CLOSE

      OPEN: Driver door open

      CLOSE: Driver door closed

      -

      Door All (Except for Driver Side Seat)

      Door courtesy light switch (except driver door) signal

      OPEN or CLOSE

      OPEN: Any door (except driver door) open

      CLOSE: All door (except driver door) closed

      -

      Body Electrical > Combination Meter > Data List

      Tester Display

      Driver Side Door

      Door All (Except for Driver Side Seat)

    OK

    The GTS display changes correctly in response to the door condition.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO LIGHTING SYSTEM (Rear Door Courtesy Switch Circuit)

    Click here

    OK

  2. CHECK REAR SEAT BELT WARNING

    1. B371364C01

      *1

      Rear Seat Belt Warning Light (Telltale Light Assembly)

      *a

      LH

      *b

      RH

      Check the rear seat belt warning function.

      Click here

      Result

      Result

      Proceed to

      The rear seat belt warning lights operate normally

      A

      The rear seat belt warning lights (all seats) do not operate normally

      B

      The rear seat belt warning light (RH) does not operate normally

      C

      The rear seat belt warning light (LH) does not operate normally

      D
    A

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    C

    READ VALUE USING GTS (REAR RH SEAT BELT BUCKLE SWITCH)Click here

    D

    READ VALUE USING GTS (REAR LH SEAT BELT BUCKLE SWITCH)Click here

    B

  3. INSPECT REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)

    1. Remove the rear seat belt warning light (telltale light assembly).

      Click here

    2. Inspect the rear seat belt warning light (LH and RH) (telltale light assembly).

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)

    Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (IGNITION POWER SUPPLY - TELLTALE LIGHT ASSEMBLY)

    1. Disconnect the F2 telltale light assembly connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      F2-1 (IG+) - Body ground

      Ignition switch ON

      11 to 14 V

      Ignition switch off

      Below 1 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY - COMBINATION METER ASSEMBLY)

    1. Disconnect the E12 combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E12-4 (RRMT) - F2-3 (RRID)

      Always

      Below 1 Ω

      E12-4 (RRMT) or F2-3 (RRID) - Body ground

      Always

      10 kΩ or higher

      E12-5 (RLMT) - F2-4 (RLID)

      Always

      Below 1 Ω

      E12-5 (RLMT) or F2-4 (RLID) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. READ VALUE USING GTS (REAR RH SEAT BELT BUCKLE SWITCH)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    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.

      Body Electrical > Combination Meter > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      2nd-Row Seatbelt Buckle (R)

      Rear RH seat belt buckle switch signal

      ON or OFF

      OFF: Rear RH seat belt fastened

      ON: Rear RH seat belt not fastened

      -

      Body Electrical > Combination Meter > Data List

      Tester Display

      2nd-Row Seatbelt Buckle (R)

      Result

      Result

      Proceed to

      ON or OFF does not appear on the GTS screen according to the rear seat belt condition

      A

      ON or OFF appears on the GTS screen according to the rear seat belt condition

      B
    B

    INSPECT REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)Click here

    A

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - REAR SEAT INNER BELT ASSEMBLY (RH SIDE) - BODY GROUND)

    1. Disconnect the E12 combination meter assembly connector.

    2. Disconnect the K38 rear seat inner belt assembly (RH side) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E12-11 (RRSB) - K38-2 (RBR+)

      Always

      Below 1 Ω

      E12-11 (RRSB) or K38-2 (RBR+) - Body ground

      Always

      10 kΩ or higher

      K38-1 (RBR-) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE REAR SEAT INNER BELT ASSEMBLY (RH SIDE)

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. INSPECT REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)

    1. Remove the rear seat belt warning light (telltale light assembly).

      Click here

    2. Inspect the rear seat belt warning light (RH) (telltale light assembly).

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)

    Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TELLTALE LIGHT ASSEMBLY)

    1. Disconnect the E12 combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E12-4 (RRMT) - F2-3 (RRID)

      Always

      Below 1 Ω

      E12-4 (RRMT) or F2-3 (RRID) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. READ VALUE USING GTS (REAR LH SEAT BELT BUCKLE SWITCH)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    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.

      Body Electrical > Combination Meter > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      2nd-Row Seatbelt Buckle (L)

      Rear LH seat belt buckle switch signal

      ON or OFF

      OFF: Rear LH seat belt fastened

      ON: Rear LH seat belt not fastened

      -

      Body Electrical > Combination Meter > Data List

      Tester Display

      2nd-Row Seatbelt Buckle (L)

      Result

      Result

      Proceed to

      ON or OFF does not appear on the GTS screen according to the rear seat belt condition

      A

      ON or OFF appears on the GTS screen according to the rear seat belt condition

      B
    B

    INSPECT REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)Click here

    A

  11. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - REAR SEAT INNER BELT ASSEMBLY (LH SIDE) - BODY GROUND)

    1. Disconnect the E12 combination meter assembly connector.

    2. Disconnect the K37 rear seat inner belt assembly (LH side) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E12-12 (RLSB) - K37-2 (LBR+)

      Always

      Below 1 Ω

      E12-12 (RLSB) or K37-2 (LBR+) - Body ground

      Always

      10 kΩ or higher

      K37-1 (LBR-) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE REAR SEAT INNER BELT ASSEMBLY (LH SIDE)

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. INSPECT REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)

    1. Remove the rear seat belt warning light (telltale light assembly).

      Click here

    2. Inspect the rear seat belt warning light (LH) (telltale light assembly).

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE REAR SEAT BELT WARNING LIGHT (TELLTALE LIGHT ASSEMBLY)

    Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TELLTALE LIGHT ASSEMBLY)

    1. Disconnect the E12 combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E12-5 (RLMT) - F2-4 (RLID)

      Always

      Below 1 Ω

      E12-5 (RLMT) or F2-4 (RLID) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE COMBINATION METER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR