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 Note
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

  • Front turn signal light

  • Side turn signal light

  • Rear turn signal light

  • Harness or connector

  • Instrument panel junction block assembly

  • Combination meter assembly (Meter circuit plate)

 DTC stored -

WIRING DIAGRAM

A003LWTE01

CAUTION / NOTICE / HINT

Note


  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

  • Inspect the turn signal lights for this system before performing the following procedure.

    Rear turn signal light assembly: Click here

    Side turn signal light assembly: Click here

    Front 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 TURN SIGNAL LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE)) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE))


    1. Disconnect the P11 rear turn signal light assembly LH (rear turn signal light lens and body LH) connector.

    2. Disconnect the I7 combination meter assembly (meter circuit plate) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P11-1 (B) or I7-13 (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 (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE))


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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-5 or I7-12 (LL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A21 front turn signal light assembly LH connector.

    2. Disconnect the 3F 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
      A21-1 (B) or 3F-6 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (SIDE TURN SIGNAL LIGHT ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the K8 side turn signal light assembly LH connector.

    2. Disconnect the 3H 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
      K8-10 (B) or 3H-14 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A003MJQC01
    *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
      3F-6, 3H-14 or 3A-5 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE) Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE))


    1. Disconnect the P9 rear turn signal light assembly RH (rear turn signal light lens and body RH) connector.

    2. Disconnect the I7 combination meter assembly (meter circuit plate) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P9-1 (B) or I7-7 (TRNR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE))


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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-4 or I7-6 (LR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A12 front turn signal light assembly RH connector.

    2. Disconnect the 3F 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
      A12-1 (B) or 3F-8 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (SIDE TURN SIGNAL LIGHT ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the J8 side turn signal light assembly RH connector.

    2. Disconnect the 3H 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
      J8-10 (B) or 3H-16 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A003MJQC01
    *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
      3F-8, 3H-16 or 3A-4 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE) Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here