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, or a short in a turn signal light circuit or the hazard warning light circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
B1507 Open in Turn Signal Circuit

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

 DTC stored -
B1508 Short in Turn Signal / Hazard Flasher Circuit

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

 DTC stored -

WIRING DIAGRAM

A01FM52E03

CAUTION / NOTICE / HINT

Note

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

Clearance light assembly: Click here

Side turn signal light assembly: Click here

Rear combination light assembly: Click here

PROCEDURE


  1. INSPECT LIGHTS


    1. Inspect the illumination of each turn signal light.

      Result
      Result Proceed to
      All RH turn signal lights or all LH turn signal lights do not blink. A
      RH side turn signal light does not illuminate. B
      LH side turn signal light does not illuminate. C

    B

    CHECK TURN SIGNAL LIGHTS (RH SIDE) Click here

    C

    CHECK TURN SIGNAL LIGHTS (LH SIDE) Click here

    A

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


    1. RH side


      1. Disconnect the O4 combination meter assembly connector.

      2. Disconnect the 4A instrument panel junction block assembly connector.

      3. Disconnect the R12 outer mirror control ECU assembly RH connector.

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

        Standard Resistance (Check for Open)
        Tester Connection Condition Specified Condition
        O4-7 (LR) - 4A-5 Always Below 1 Ω
        Standard Resistance (Check for Short)
        Tester Connection Condition Specified Condition
        O4-7 (LR) - Body ground Always 10 kΩ or higher

    2. LH side


      1. Disconnect the O4 combination meter assembly connector.

      2. Disconnect the 4A instrument panel junction block assembly connector.

      3. Disconnect the S12 outer mirror control ECU assembly LH connector.

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

        Standard Resistance (Check for Open)
        Tester Connection Condition Specified Condition
        O4-13 (LL) - 4A-6 Always Below 1 Ω
        Standard Resistance (Check for Short)
        Tester Connection Condition Specified Condition
        O4-13 (LL) - 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

  3. CHECK TURN SIGNAL LIGHTS (RH SIDE)


    1. Turn the engine switch on (IG).

    2. Set the headlight dimmer switch assembly to the right turn switch position.

    3. Check the operation of the turn signal lights (RH side).

      Result
      Result Proceed to
      Front turn signal light assembly (RH side) does not blink. A
      Side turn signal light assembly (RH side) does not blink. B
      Rear turn signal light assembly (RH side) does not blink. C

    B

    CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND) Click here

    C

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

    A

  4. CHECK HARNESS AND CONNECTOR (CLEARANCE LIGHT ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND)


    1. Disconnect the D2 clearance light assembly RH connector.

    2. Disconnect the 4C instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      D2-1 (B) - 4C-8 Always Below 1 Ω
      D2-2 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D2-1 (B) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

      Click here

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

      A01FN6FC05
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-5 - 4C-8 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CLEARANCE LIGHT ASSEMBLY RH Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND)


    1. Disconnect the O4 combination meter assembly connector.

    2. Disconnect the R12 outer mirror control ECU assembly RH connector.

    3. Disconnect the 4A instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      R12-11 (TRNI) - O4-7 (LR) Always Below 1 Ω
      R12-7 (GND) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      O4-7 (LR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY RH - SIDE TURN SIGNAL LIGHT ASSEMBLY RH)


    1. Disconnect the R13 outer mirror control ECU assembly RH connector.

    2. Disconnect the R7 side turn signal light assembly RH connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      R3-16 (TRN+) - R7-16 (B) Always Below 1 Ω
      R13-12 (HTR-) - R7-12 (-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      R7-16 (B) - Body ground Always 10 kΩ or higher
      R7-12 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH


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

      Click here

    2. Check for the DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      DTCs are output A
      DTCs are not output B

    A

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH Click here

    B

    END

  9. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND)


    1. Disconnect the U5 rear combination light assembly RH connector.

    2. Disconnect the 4D instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      U5-4 (TRN) - 4D-18 Always Below 1 Ω
      U5-3 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      U5-4 (TRN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

      Click here

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

      A01FKBAC04
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-5 - 4D-18 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR COMBINATION LIGHT ASSEMBLY RH Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  11. CHECK TURN SIGNAL LIGHTS (LH SIDE)


    1. Turn the engine switch on (IG).

    2. Set the headlight dimmer switch assembly to the left turn switch position.

    3. Check the operation of the turn signal lights (LH side).

      Result
      Result Proceed to
      Front turn signal light assembly (LH side) does not blink. A
      Side turn signal light assembly (LH side) does not blink. B
      Rear turn signal light assembly (LH side) does not blink. C

    B

    CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND) Click here

    C

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

    A

  12. CHECK HARNESS AND CONNECTOR (CLEARANCE LIGHT ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND)


    1. Disconnect the D4 clearance light assembly LH connector.

    2. Disconnect the 4C instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      D4-1 (B) - 4C-6 Always Below 1 Ω
      D4-2 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D4-1 (B) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

      Click here

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

      A01FN6FC05
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-6 - 4C-6 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CLEARANCE LIGHT ASSEMBLY LH Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  14. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND)


    1. Disconnect the O4 combination meter assembly connector.

    2. Disconnect the S12 outer mirror control ECU assembly LH connector.

    3. Disconnect the 4A instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      S12-11 (TRNI) - O4-13 (LL) Always Below 1 Ω
      S12-7 (GND) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      O4-13 (LL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH - SIDE TURN SIGNAL LIGHT ASSEMBLY LH)


    1. Disconnect the S13 outer mirror control ECU assembly LH connector.

    2. Disconnect the S7 side turn signal light assembly LH connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      S13-16 (TRN+) - S7-16 (B) Always Below 1 Ω
      S13-12 (HTR-) - S7-12 (-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      S7-16 (B) - Body ground Always 10 kΩ or higher
      S7-12 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH


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

      Click here

    2. Check for the DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      DTCs are output A
      DTCs are not output B

    A

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH Click here

    B

    END

  17. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND)


    1. Disconnect the U41 rear combination light assembly LH connector.

    2. Disconnect the 4D instrument panel junction block assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      U41-4 (TRN) - 4D-17 Always Below 1 Ω
      U41-3 (E) - Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      U41-4 (TRN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

      Click here

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

      A01FKBAC04
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-6 - 4D-17 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR COMBINATION LIGHT ASSEMBLY LH Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here