METER / GAUGE SYSTEM, Diagnostic DTC:B1507, B1508

DTC Code DTC Name
B1507 Open in Turn Signal Circuit
B1508 Short in Turn Signal / Hazard Flasher Circuit

DESCRIPTION

The combination meter assembly receives headlight dimmer switch information signals, and flash the turn signal lights.

WIRING DIAGRAM

A005MAJE02

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. INSPECT LIGHTS


    1. Inspect each turn signal light illumination.

      Result
      Result Proceed to
      One side of the turn signal lights does not illuminate. A
      Front turn signal lights do not illuminate. B
      Rear turn signal lights do not illuminate. C

    B

    CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK) Click here

    C

    CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER - INSTRUMENT PANEL JUNCTION BLOCK)


    1. Disconnect the F3 combination meter assembly connector.

    2. Disconnect the 3B instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      for LH
      Tester Connection Condition Specified Condition
      F3-13 (LL) - 3B-24 Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      F3-7 (LR) - 3B-25 Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      F3-13 (LL) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      F3-7 (LR) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  3. CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK)


    1. Disconnect the A7*1 or A8*2 front turn signal light connector.


      • *1: for RH

      • *2: for LH

    2. Disconnect the 3C instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      for LH
      Tester Connection Condition Specified Condition
      A8-1 (B) - 3C-28 Always Below 1 Ω
      A8-2 (E) - Body ground Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      A7-1 (B) - 3C-38 Always Below 1 Ω
      A7-2 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      A8-1 (B) -Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      A7-1 (B) -Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK)


    1. Disconnect the K6*1 or K5*2 rear turn signal light connector.


      • *1: for RH

      • *2: for LH

    2. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      for LH
      Tester Connection Condition Specified Condition
      K5-4 (TRN) - 3D-18 Always Below 1 Ω
      K5-3 (E) -Body ground Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      K6-4 (TRN) - 3D-5 Always Below 1 Ω
      K6-3 (E) -Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      K5-4 (TRN) -Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      K6-4 (TRN) -Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

  5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly Click here.

    2. Remove the main body ECU (multiplex network body ECU).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3B-25 - 3C-38 Always Below 1 Ω
      3B-25 - 3D-5 Always Below 1 Ω
      3B-24 - 3C-28 Always Below 1 Ω
      3B-24 - 3C-18 Always Below 1 Ω

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here