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

These DTCs are stored when the combination meter assembly detects an open in a turn signal light circuit, a short in a turn signal light circuit, or a short in the hazard warning light circuit.

DTC No. DTC Detection Condition Trouble Area
B1507

When IG voltage is 9.5 V or more and the following condition is detected:


  • Open in turn signal light circuit

  • LED

  • Bulb

  • Harness or connector

  • Instrument panel junction block assembly

  • Outer mirror control ECU assembly LH*

  • Outer mirror control ECU assembly RH*

  • Combination meter assembly
B1508

When IG voltage is 9.5 V or more and the following condition is detected:


  • Short in turn signal light circuit or hazard warning light circuit

  • LED

  • Bulb

  • Harness or connector

  • Instrument panel junction block assembly

  • Outer mirror control ECU assembly LH*

  • Outer mirror control ECU assembly RH*

  • Combination meter assembly

WIRING DIAGRAM


  1. w/ Seat Position Memory

    A01G6VHE01

  2. w/o Seat Position Memory

    A01G793E01

INSPECTION PROCEDURE

Note

Inspect the LEDs Click here and bulbs for this system before performing the following inspection procedure.

PROCEDURE


  1. INSPECT LIGHTS


    1. Inspect the illumination of each turn signal light.

      Result
      Result Proceed to
      Turn signal lights for one side do not illuminate. A
      Front turn signal light does not illuminate. B
      Rear turn signal light does not illuminate. C
      Side turn signal light does not illuminate (w/o Seat position memory). D
      Side turn signal light does not illuminate (w/ Seat position memory). E

    B

    CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Click here

    D

    CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Click here

    E

    CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Click here

    A

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


    1. Disconnect the H13 combination meter assembly connector.

    2. Disconnect the 3A 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
      H13-7 (LL) - 3A-20 Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      H13-13 (LR) - 3A-37 Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      H13-7 (LL) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      H13-13 (LR) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. for G.C.C.


      1. Disconnect the A20*1 or A53*2 headlight assembly connector.


        • *1: for LH

        • *2: for RH

      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
        A20-1 (B) - 3D-10 Always Below 1 Ω
        A20-2 (E) - Body ground Always Below 1 Ω
        for RH
        Tester Connection Condition Specified Condition
        A53-1 (B) - 3D-5 Always Below 1 Ω
        A53-2 (E) - Body ground Always Below 1 Ω
        Standard Resistance (Check for Short)
        for LH
        Tester Connection Condition Specified Condition
        A20-1 (B) - Body ground Always 10 kΩ or higher
        for RH
        Tester Connection Condition Specified Condition
        A53-1 (B) - Body ground Always 10 kΩ or higher
        Result
        Result Proceed to
        NG A
        OK B

    2. except G.C.C.


      1. Disconnect the A21*1 or A54*2 headlight assembly connector.


        • *1: for LH

        • *2: for RH

      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
        A21-2 (B) - 3D-10 Always Below 1 Ω
        A21-1 (E) - Body ground Always Below 1 Ω
        for RH
        Tester Connection Condition Specified Condition
        A54-2 (B) - 3D-5 Always Below 1 Ω
        A54-1 (E) - Body ground Always Below 1 Ω
        Standard Resistance (Check for Short)
        for LH
        Tester Connection Condition Specified Condition
        A21-2 (B) - Body ground Always 10 kΩ or higher
        for RH
        Tester Connection Condition Specified Condition
        A54-2 (B) - Body ground Always 10 kΩ or higher
        Result
        Result Proceed to
        NG A
        OK B

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the U13*1 or U12*2 rear combination light assembly connector.


      • *1: for LH

      • *2: for RH

    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
      U13-5 (TRN) - 3C-22 Always Below 1 Ω
      U13-6 (E) - Body ground Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      U12-5 (TRN) - 3C-19 Always Below 1 Ω
      U12-6 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      U13-5 (TRN) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      U12-5 (TRN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the M6*1 or L7*2 outer rear view mirror assembly connector.


      • *1: for LH

      • *2: for RH

    2. Disconnect the 3A or 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
      M6-16 (B) - 3A-40 Always Below 1 Ω
      M6-12 (-) - Body ground Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      L7-16 (B) - 3B-32 Always Below 1 Ω
      L7-12 (-) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      M6-16 (B) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      L7-16 (B) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the M9*1 or L10*2 outer mirror control ECU assembly connector.


      • *1: for LH

      • *2: for RH

    2. Disconnect the 3A or 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
      M9-11 (TRNI) - 3A-40 Always Below 1 Ω
      M9-7 (GND) - Body ground Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      L10-11 (TRNI) - 3B-32 Always Below 1 Ω
      L10-7 (GND) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      for LH
      Tester Connection Condition Specified Condition
      M9-11 (TRNI) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      L10-11 (TRNI) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly Click here.

      A01G59XE02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-20 - 3D-10 Always Below 1 Ω
      3A-20 - 3C-22 Always Below 1 Ω
      3A-20 - 3A-40 Always Below 1 Ω
      3A-37 - 3D-5 Always Below 1 Ω
      3A-37 - 3C-19 Always Below 1 Ω
      3A-37 - 3B-32 Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (w/o Seat position memory) B
      OK (w/ Seat position memory) C
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY Click here

    A

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  8. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY


    1. Replace the outer mirror control ECU assembly with a new or known good one Click here.

    2. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    END