METER / GAUGE SYSTEM, Diagnostic DTC:B1508

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

DESCRIPTION

This DTC is stored when the combination meter assembly (meter circuit plate) detects an short in a turn signal light circuit.

Tech Tips

If there is a short in a turn signal light circuit, all of the turn signal lights on the side with the short circuit will not blink.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B1508 Short in Turn Signal / Hazard Flasher Circuit

Diagnosis Condition:


  • Auxiliary battery voltage is 7 V or more.

Malfunction Status:


  • Short in turn signal light circuit

  • LED or bulb

  • Harness or connector

  • Instrument panel junction block assembly

  • Combination meter assembly

 DTC stored

WIRING DIAGRAM


  1. w/ Seat Position Memory

    A0020AYE03

  2. w/o Seat Position Memory

    A0022SIE04

CAUTION / NOTICE / HINT

Note

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

Front turn signal light assembly (for LED Type Turn Signal Light): Click here

Front turn signal light assembly (for bulb Type Turn Signal Light): Click here

Rear turn signal light assembly: Click here

Side turn signal light assembly: Click here

PROCEDURE


  1. INSPECT LIGHTS


    1. Inspect the illumination of each turn signal light.

      Result
      Result Proceed to
      All LH turn signal lights do not blink A
      All RH turn signal lights do not blink B

    B

    CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY)


    1. Disconnect the Q43 rear combination light assembly LH connector.

    2. Disconnect the K4 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q43-4 (TRN) or K4-11 (TRNL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the W1 No. 1 headlight ECU sub-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
      Tester Connection Condition Specified Condition
      W1-11 (TNS) or 4C-6 - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A0023A5C11
    *a

    Component without harness connected

    (Instrument Panel Junction Block Assembly)

    		 - -

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

      Note

      Make sure to perform this step with the instrument panel junction block assembly installed to the vehicle.

      Standard Resistance
      Tester Connection Condition Specified Condition
      4C-6 or 4A-6 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  5. CONFIRM MODEL

    Result
    Result Proceed to
    w/ Seat Position Memory A
    w/o Seat Position Memory B

    B

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

    A

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


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

    2. Disconnect the N24 outer mirror control ECU assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-6, N24-11(TRNI) or K4-13 (LL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

    A0022YTC04
    *a

    Component without harness connected

    (Outer Rear View Mirror Assembly LH)

    1. Remove the outer rear view mirror assembly LH.

      Click here

    2. Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z11-16 - z11-12 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Click here

    OK

  8. 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

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

    A

    END

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND OUTER REAR VIEW MIRROR ASSEMBLY LH - COMBINATION METER ASSEMBLY)


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

    2. Disconnect the N23 outer rear view mirror assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-6, N23-16(B) or K4-13 (LL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

    A0021ZQC03
    *a

    Component without harness connected

    (Outer Rear View Mirror Assembly LH)

    1. Remove the outer rear view mirror assembly LH.

      Click here

    2. Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N23-16 (B) - N23-12 (-) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Click here

  11. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY)


    1. Disconnect the Q5 rear combination light assembly RH connector.

    2. Disconnect the K4 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q5-4 (TRN) or K4-5 (TRNR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK HARNESS AND CONNECTOR (NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the G1 No. 1 headlight ECU sub-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
      Tester Connection Condition Specified Condition
      G1-11 (TNS) or 4C-8 - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG B

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  13. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A0023A5C11
    *a

    Component without harness connected

    (Instrument Panel Junction Block Assembly)

    		 - -

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

      Note

      Make sure to perform this step with the instrument panel junction block assembly installed to the vehicle.

      Standard Resistance
      Tester Connection Condition Specified Condition
      4C-8 or 4A-5 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  14. CONFIRM MODEL

    Result
    Result Proceed to
    w/ Seat Position Memory A
    w/o Seat Position Memory B

    B

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

    A

  15. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND OUTER MIRROR CONTROL ECU ASSEMBLY RH - COMBINATION METER ASSEMBLY)


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

    2. Disconnect the N9 outer mirror control ECU assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-5, N9-11(TRNI) or K4-7 (LR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

    A0022YTC03
    *a

    Component without harness connected

    (Outer Rear View Mirror Assembly RH)

    1. Remove the outer rear view mirror assembly RH.

      Click here

    2. Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z12-16 - z12-12 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Click here

    OK

  17. 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

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

    A

    END

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

  18. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND OUTER REAR VIEW MIRROR ASSEMBLY RH - COMBINATION METER ASSEMBLY)


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

    2. Disconnect the N8 outer rear view mirror assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4A-5, N8-16(B) or K4-7 (LR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

    A0021ZQC04
    *a

    Component without harness connected

    (Outer Rear View Mirror Assembly RH)

    1. Remove the outer rear view mirror assembly RH.

      Click here

    2. Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N8-16 (B) - N8-12 (-) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Click here