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 Code DTC Detection Condition Trouble Area
B1507

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


  1. Open in turn signal light circuit

  • Bulb

  • Harness or connector

  • Headlight assembly*1

  • Headlight cord*1

  • Headlight unit assembly*2

  • Side turn signal light assembly

  • Outer mirror actuator sub-assembly

  • Front multiplex network door ECU

  • Rear combination light socket and wire sub-assembly

  • Combination meter assembly
B1508

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


  1. Short in turn signal light circuit or hazard warning light circuit

WIRING DIAGRAM

A01FVYRE03

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    NG

    CONFIRM MALFUNCTIONING LIGHT Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CONFIRM MALFUNCTIONING LIGHT


    1. Check the malfunctioning turn signal light.

      Result
      Result Proceed to
      No right turn signal lights turn on A
      No left turn signal lights turn on B
      One of the right turn signal lights does not turn on C
      One of the left turn signal lights does not turn on D

    B

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU LH) Click here

    C

    CONFIRM MALFUNCTIONING LIGHT (RH SIDE) Click here

    D

    CONFIRM MALFUNCTIONING LIGHT (LH SIDE) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU RH)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the Q4 front multiplex network door ECU RH connector.

    3. Disconnect the B2 headlight unit assembly RH connector.

    4. Disconnect the U43 rear combination light socket and wire sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-13 (LR) - Q4-20 (TRN1) Always Below 1 Ω
      N39-13 (LR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU LH)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the Q19 front multiplex network door ECU LH connector.

    3. Disconnect the B5 headlight unit assembly LH connector.

    4. Disconnect the U45 rear combination light socket and wire sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-7 (LL) - Q19-20 (TRN1) Always Below 1 Ω
      N39-7 (LL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  5. CONFIRM MALFUNCTIONING LIGHT (RH SIDE)


    1. Check the malfunctioning turn signal light.

      Result
      Result Proceed to
      Front turn signal light does not illuminate (for HID Headlight) A
      Front turn signal light does not illuminate (for LED Headlight) B
      Side turn signal light does not illuminate C
      Rear turn signal light does not illuminate D

    B

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT ASSEMBLY RH AND BODY GROUND) Click here

    C

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU RH AND BODY GROUND) Click here

    D

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY RH AND BODY GROUND) Click here

    A

  6. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT UNIT ASSEMBLY RH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the B2 headlight unit assembly RH connector.

    3. Disconnect the Q4 front multiplex network door ECU RH connector.

    4. Disconnect the U43 rear combination light socket and wire sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-13 (LR) - B2-16 (B) Always Below 1 Ω
      B2-21 (E) - Body ground
      N39-13 (LR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HEADLIGHT UNIT ASSEMBLY RH Click here

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT ASSEMBLY RH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the B2 headlight assembly RH connector.

    3. Disconnect the Q4 front multiplex network door ECU RH connector.

    4. Disconnect the U43 rear combination light socket and wire sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-13 (LR) - B2-16 (B) Always Below 1 Ω
      B2-21 (E) - Body ground
      N39-13 (LR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HEADLIGHT CORD RH


    1. Replace the headlight cord RH with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    NG

    REPLACE HEADLIGHT ASSEMBLY RH Click here

    OK

    END (HEADLIGHT CORD RH WAS DEFECTIVE)

  9. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU RH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the Q4 front multiplex network door ECU RH connector.

    3. Disconnect the B2 headlight unit assembly RH connector.

    4. Disconnect the U43 rear combination light socket and wire sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-13 (LR) - Q4-20 (TRN1) Always Below 1 Ω
      Q4-1 (GND) - Body ground
      N39-13 (LR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH


    1. A01FVKV

      Remove the outer rear view mirror assembly RH Click here.

    2. Connect the positive (+) lead from the battery to terminal 16 and the negative (-) lead to terminal 12, and check that the light comes on.

      OK
      Light comes on.

    NG

    INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY RH Click here

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

  11. INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY RH


    1. Remove the side turn signal light assembly RH Click here.

    2. Inspect the side turn signal light assembly RH Click here.


    NG

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH Click here

    OK

    REPLACE OUTER MIRROR ACTUATOR SUB-ASSEMBLY RH Click here

  12. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY RH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the U43 rear combination light socket and wire sub-assembly RH connector.

    3. Disconnect the B2 headlight unit assembly RH connector.

    4. Disconnect the Q4 front multiplex network door ECU RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-13 (LR) - U43-2 (TRN) Always Below 1 Ω
      U43-4 (E) - Body ground
      N39-13 (LR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY RH Click here

  13. CONFIRM MALFUNCTIONING LIGHT (LH SIDE)


    1. Check the malfunctioning turn signal light.

      Result
      Result Proceed to
      Front turn signal light does not illuminate (for HID Headlight) A
      Front turn signal light does not illuminate (for LED Headlight) B
      Side turn signal light does not illuminate C
      Rear turn signal light does not illuminate D

    B

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT ASSEMBLY LH AND BODY GROUND) Click here

    C

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU LH AND BODY GROUND) Click here

    D

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY LH AND BODY GROUND) Click here

    A

  14. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT UNIT ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the B5 headlight unit assembly LH connector.

    3. Disconnect the Q19 front multiplex network door ECU LH connector.

    4. Disconnect the U45 rear combination light socket and wire sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-7 (LL) - B5-16 (B) Always Below 1 Ω
      B5-21 (E) - Body ground
      N39-7 (LL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HEADLIGHT UNIT ASSEMBLY LH Click here

  15. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the B5 headlight assembly LH connector.

    3. Disconnect the Q19 front multiplex network door ECU LH connector.

    4. Disconnect the U45 rear combination light socket and wire sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-7 (LL) - B5-16 (B) Always Below 1 Ω
      B5-21 (E) - Body ground
      N39-7 (LL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. CHECK HEADLIGHT CORD LH


    1. Replace the headlight cord RH with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    NG

    REPLACE HEADLIGHT ASSEMBLY LH Click here

    OK

    END (HEADLIGHT CORD LH WAS DEFECTIVE)

  17. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FRONT MULTIPLEX NETWORK DOOR ECU LH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the Q19 front multiplex network door ECU LH connector.

    3. Disconnect the B5 headlight unit assembly LH connector.

    4. Disconnect the U45 rear combination light socket and wire sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-7 (LL) - Q19-20 (TRN1) Always Below 1 Ω
      Q19-1 (GND) - Body ground
      N39-7 (LL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH


    1. A01FVKV

      Remove the outer rear view mirror assembly LH Click here.

    2. Connect the positive (+) lead from the battery to terminal 16 and the negative (-) lead to terminal 12, and check that the light comes on.

      OK
      Light comes on.

    NG

    INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY LH Click here

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

  19. INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY LH


    1. Remove the side turn signal light assembly LH Click here.

    2. Inspect the side turn signal light assembly LH Click here.


    NG

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH Click here

    OK

    REPLACE OUTER MIRROR ACTUATOR SUB-ASSEMBLY LH Click here

  20. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY LH AND BODY GROUND)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the U45 rear combination light socket and wire sub-assembly LH connector.

    3. Disconnect the B5 headlight unit assembly LH connector.

    4. Disconnect the Q19 front multiplex network door ECU LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-7 (LL) - U45-2 (TRN) Always Below 1 Ω
      U45-4 (E) - Body ground
      N39-7 (LL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY LH Click here