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*1

  • Harness or connector

  • Headlight ECU sub-assembly

  • Headlight code*1

  • No. 1 Headlight clearance LED unit*2

  • Side turn signal light assembly

  • Outer mirror actuator sub-assembly

  • Front multiplex network door ECU

  • Rear combination light 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

B002BQWE04
B002B89E03

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CLEAR DTC


    NEXT

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CONFIRM MALFUNCTIONING LIGHT


    1. Check the malfunctioning turn signal light.

      Result
      Result Proceed to
      LH side front or side turn signal light does not illuminate. A
      RH side front or side turn signal light does not illuminate. B
      LH side rear turn signal light does not illuminate. C
      RH side rear turn signal light does not illuminate. D

    B

    CHECK HARNESS AND CONNECTOR (RH SIDE TURN SIGNAL CIRCUIT) Click here

    C

    CHECK HARNESS AND CONNECTOR (LH SIDE TURN SIGNAL CIRCUIT) Click here

    D

    CHECK HARNESS AND CONNECTOR (RH SIDE TURN SIGNAL CIRCUIT) Click here

    A

  4. CHECK HARNESS AND CONNECTOR (LH SIDE TURN SIGNAL CIRCUIT)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the z10 front multiplex network door ECU LH connector.

    3. Disconnect the B16 headlight assembly LH connector.

    4. Disconnect the N69 multi-media module receiver assembly connector.

    5. Disconnect the N35 windshield wiper switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-13 (LL) - B16-11 (TNS) Always Below 1 Ω
      N39-13 (LL) - z10-16 (B)
      N39-13 (LL) - N69-12 (HFL)
      N39-13 (LL) - N35-1 (TRNL)
      B16-12 (GND) - Body ground
      z10-12 (-) - Body ground
      N39-13 (LL) - Body ground Always 10 kΩ or higher

    NG

    CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

    OK

  5. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH


    1. Remove the outer rear view mirror assembly LH Click here.

    2. Inspect the outer rear view mirror assembly LH Click here.

      OK
      Light comes on.

    NG

    INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY LH Click here

    OK

  6. CHECK HEADLIGHT ECU SUB-ASSEMBLY LH


    1. Remove the headlight ECU sub-assembly LH Click here.

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

      B002BN6E03
      Standard Resistance
      Tester Connection Condition Specified Condition
      B16-11 (TNS) - A-9 (TURN+) Always Below 1 Ω
      B16-12 (GND) - A-13 (TURN-)
      B16-11 (TNS) - B16-12 (GND) Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for Single Beam Headlight) A
      OK (for Triple Beam Headlight) B
      NG C

    B

    CHECK NO. 1 HEADLIGHT CLEARANCE LED UNIT LH Click here

    C

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    A

  7. CHECK HEADLIGHT CORD


    1. Replace the headlight code Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    OK

    END (HEADLIGHT CODE IS DEFECTIVE)

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

  8. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH


    1. Disconnect the Q19 and z10 front multiplex network door ECU LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q19-20 (TRNI) - z10-16 (B) Always Below 1 Ω
      Q19-1 (GND) - z10-12 (-)
      Q19-20 (TRNI) - Q19-1 (GND) Always 10 kΩ or higher
      Q19-20 (TRNI) - Body ground

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

  9. 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.


    OK

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH

    NG

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH Click here

  10. CHECK NO. 1 HEADLIGHT CLEARANCE LED UNIT LH


    1. Replace the No. 1 headlight clearance LED unit LH Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    OK

    END (NO. 1 HEADLIGHT CLEARANCE LED UNIT LH IS DEFECTIVE)

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

  11. CHECK HARNESS AND CONNECTOR (RH SIDE TURN SIGNAL CIRCUIT)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the B15 headlight assembly RH connector.

    3. Disconnect the z9 front multiplex network door ECU RH connector.

    4. Disconnect the N35 windshield wiper switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-7 (LR) - B15-11 (TNS) Always Below 1 Ω
      N39-7 (LR) - z9-16 (B)
      N39-7 (LR) - N35-11 (TRNR)
      B15-12 (GND) - Body ground
      z9-12 (-) - Body ground
      N39-7 (LR) - Body ground Always 10 kΩ or higher

    NG

    CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

    OK

  12. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH


    1. Remove the outer rear view mirror assembly RH Click here.

    2. Inspect the outer rear view mirror assembly RH Click here.


    NG

    INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY RH Click here

    OK

  13. CHECK HEADLIGHT ECU SUB-ASSEMBLY RH


    1. Remove the headlight ECU sub-assembly RH Click here.

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

      B002BN6E02
      Standard Resistance
      Tester Connection Condition Specified Condition
      B15-11 (TNS) - A-9 (TURN+) Always Below 1 Ω
      B15-12 (GND) - A-13 (TURN-)
      B15-11 (TNS) - B15-12 (GND) Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for Single Beam Headlight) A
      OK (for Triple Beam Headlight) B
      NG C

    B

    CHECK NO. 1 HEADLIGHT CLEARANCE LED UNIT RH Click here

    C

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    A

  14. CHECK HEADLIGHT CORD


    1. Replace the headlight code Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    OK

    END (HEADLIGHT CODE IS DEFECTIVE)

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

  15. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH


    1. Disconnect the Q4 and z9 front multiplex network door ECU RH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q4-20 (TRNI) - z9-16 (B) Always Below 1 Ω
      Q4-1 (GND) - z9-12 (-)
      Q4-20 (TRNI) - Q4-1 (GND) Always 10 kΩ or higher
      Q4-20 (TRNI) - Body ground

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

  16. 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.


    OK

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH

    NG

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH Click here

  17. CHECK NO. 1 HEADLIGHT CLEARANCE LED UNIT RH


    1. Replace the No. 1 headlight clearance LED unit RH Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B1507 or B1508 output does not occur.

    OK

    END (NO. 1 HEADLIGHT CLEARANCE LED UNIT RH IS DEFECTIVE)

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

  18. CHECK HARNESS AND CONNECTOR (LH SIDE TURN SIGNAL CIRCUIT)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the U45 rear combination light assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-11 (TRNL) - U45-2 (TRN) Always Below 1 Ω
      U45-4 (E) - Body ground
      N39-11 (TRNL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. CHECK REAR COMBINATION LIGHT ASSEMBLY LH


    1. Remove the rear combination light assembly LH Click here.

    2. Inspect the rear combination light assembly LH Click here.


    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE REAR COMBINATION LIGHT ASSEMBLY LH Click here

  20. CHECK HARNESS AND CONNECTOR (RH SIDE TURN SIGNAL CIRCUIT)


    1. Disconnect the N39 combination meter assembly connector.

    2. Disconnect the U43 rear combination light assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-5 (TRNR) - U43-2 (TRN) Always Below 1 Ω
      U43-4 (E) - Body ground
      N39-5 (TRNR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  21. CHECK REAR COMBINATION LIGHT ASSEMBLY RH


    1. Remove the rear combination light assembly RH Click here.

    2. Inspect the rear combination light assembly RH Click here.


    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE REAR COMBINATION LIGHT ASSEMBLY RH Click here