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DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [02/2024 - ]: Procedure

  1. INSPECT LIGHTS 
    1. Inspect the illumination of each turn signal light.

      Result

      Result Proceed to
      Front turn signal light LH and side turn signal light LH does not blink. A
      Front turn signal light RH and side turn signal light RH does not blink. B
      Rear turn signal light LH do not blink. C
      Rear turn signal light RH do not blink. D

    Result: 

    B 

    See step  13

    Result: 

    C 

    See step  24

    Result: 

    D 

    See step  27

    Result: 

    A 

    See step  2

  2. CHECK NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH 

    Pre-procedure1

    1. Disconnect the A52 No. 1 headlight ECU sub-assembly LH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output A
      B1507-18 is output B

      Post-procedure1

    4. None

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  3

  3. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

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

    Result: 

    B 

    See step  8

    Result: 

    A 

    See step  4

  4. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY LH 

    Pre-procedure1

    1. Disconnect the G43 outer mirror control ECU assembly LH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY GROUND) 

    Pre-procedure1

    1. *1: for 7 Inch Multi-information Display Type
    2. *2: for 12.3 Inch Multi-information Display Type
    3. *3: w/ Memory Seat
    4. *4: w/o Memory Seat
    5. *5: w/ Side Television Camera Assembly
    6. *6: w/o Side Television Camera Assembly
    1. Disconnect the E8*1 or E5*2 combination meter assembly connector.
    2. Disconnect the A52 No. 1 headlight ECU sub-assembly LH connector.
    3. Disconnect the G43 outer mirror control ECU assembly LH connector.*3
      1. Disconnect the G28*5 or G30*6 outer rear view mirror assembly LH connector.*4

      Procedure1

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

      Standard Resistance

      FOR 7 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E8-29 (LL) - Body ground Always 10 kΩ or higher
      FOR 12.3 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E5-5 (LL) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. CHECK OUTER REAR VIEW MIRROR ASSEMBLY LH 

    Pre-procedure1

    1. Disconnect the z22 outer rear view mirror assembly LH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    B 

    See step  7

  7. CHECK SIDE TURN SIGNAL LIGHT ASSEMBLY LH 

    Pre-procedure1

    1. Remove the side turn signal light assembly LH.

      HINT: 

      Refer to REMOVAL [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH 

    Refer to DISASSEMBLY [02/2024 - ]

    Result: 

    B 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH 

    Refer to REMOVAL [02/2024 - ]

  8. CHECK OUTER REAR VIEW MIRROR ASSEMBLY LH 

    Pre-procedure1

    1. Disconnect the G28*1 or G30*2 outer rear view mirror assembly LH connector.
      1. *1: w/ Side Television Camera Assembly
      2. *2: w/o Side Television Camera Assembly

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    See step  5

    Result: 

    B 

    See step  7

  9. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      for Single Beam Headlight A
      for Triple Beam Headlight B

    Result: 

    B 

    See step  12

    Result: 

    A 

    See step  10

  10. CHECK HEADLIGHT FRONT TURN SIGNAL LIGHT LED (for LH Side) 

    Pre-procedure1

    1. Disconnect the front headlight turn signal light LED (for LH side).

      HINT: 

      Refer to DISASSEMBLY [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    B 

    REPLACE HEADLIGHT FRONT TURN SIGNAL LIGHT LED (for LH Side) 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    A 

    See step  11

  11. CHECK HEADLIGHT HEADLIGHT LH 

    Pre-procedure1

    1. Disconnect the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    B 

    REPLACE HEADLIGHT HEADLIGHT LH 

    Refer to REMOVAL [02/2024 - ]

  12. CHECK HEADLIGHT HEADLIGHT LH 

    Pre-procedure1

    1. Disconnect the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    B 

    REPLACE HEADLIGHT HEADLIGHT LH 

    Refer to REMOVAL [02/2024 - ]

  13. CHECK NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH 

    Pre-procedure1

    1. Disconnect the A53 No. 1 headlight ECU sub-assembly RH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1507-18 is output. B

      Post-procedure1

    4. None

    Result: 

    B 

    See step  20

    Result: 

    A 

    See step  14

  14. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

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

    Result: 

    B 

    See step  19

    Result: 

    A 

    See step  15

  15. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY RH 

    Pre-procedure1

    1. Disconnect the G20 outer mirror control ECU assembly RH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    B 

    See step  17

    Result: 

    A 

    See step  16

  16. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY GROUND) 

    Pre-procedure1

    1. *1: for 7 Inch Multi-information Display Type
    2. *2: for 12.3 Inch Multi-information Display Type
    3. *3: w/ Memory Seat
    4. *4: w/o Memory Seat
    5. *5: w/ Side Television Camera Assembly
    6. *6: w/o Side Television Camera Assembly
    1. Disconnect the E8*1 or E5*2 combination meter assembly connector.
    2. Disconnect the A53 No. 1 headlight ECU sub-assembly RH connector.
    3. Disconnect the G20 outer mirror control ECU assembly RH connector.*3
      1. Disconnect the G3*5 or G5*6 outer rear view mirror assembly RH connector.*4

      Procedure1

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

      Standard Resistance

      FOR 7 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E8-30 (LR) - Body ground Always 10 kΩ or higher
      FOR 12.3 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E5-6 (LR) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  17. CHECK OUTER REAR VIEW MIRROR ASSEMBLY RH 

    Pre-procedure1

    1. Disconnect the z21 outer rear view mirror assembly RH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    B 

    See step  18

  18. CHECK SIDE TURN SIGNAL LIGHT ASSEMBLY RH 

    Pre-procedure1

    1. Remove the side turn signal light assembly RH.

      HINT: 

      Refer to REMOVAL [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH 

    Refer to DISASSEMBLY [02/2024 - ]

    Result: 

    B 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH 

    Refer to REMOVAL [02/2024 - ]

  19. CHECK OUTER REAR VIEW MIRROR ASSEMBLY RH 

    Pre-procedure1

    1. Disconnect the G3*1 or G5*2 outer rear view mirror assembly RH connector.
      1. *1: w/ Side Television Camera Assembly
      2. *2: w/o Side Television Camera Assembly

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    See step  16

    Result: 

    B 

    See step  18

  20. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      for Single Beam Headlight A
      for Triple Beam Headlight B

    Result: 

    B 

    See step  23

    Result: 

    A 

    See step  21

  21. CHECK HEADLIGHT FRONT TURN SIGNAL LIGHT LED (for RH Side) 

    Pre-procedure1

    1. Disconnect the front headlight turn signal light LED (for RH side).

      HINT: 

      Refer to DISASSEMBLY [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    B 

    REPLACE HEADLIGHT FRONT TURN SIGNAL LIGHT LED (for RH Side) 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    A 

    See step  22

  22. CHECK HEADLIGHT HEADLIGHT RH 

    Pre-procedure1

    1. Disconnect the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    B 

    REPLACE HEADLIGHT HEADLIGHT RH 

    Refer to REMOVAL [02/2024 - ]

  23. CHECK HEADLIGHT HEADLIGHT RH 

    Pre-procedure1

    1. Disconnect the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [02/2024 - ]

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1508-19 is not output. B

      Post-procedure1

    4. None

    Result: 

    A 

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    B 

    REPLACE HEADLIGHT HEADLIGHT RH 

    Refer to REMOVAL [02/2024 - ]

  24. CHECK REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY LH 

    Pre-procedure1

    1. Disconnect the K49 rear combination light socket and wire sub-assembly LH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1507-18 is output. B

      Post-procedure1

    4. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY LH 

    Refer to DISASSEMBLY [02/2024 - ]

    Result: 

    A 

    See step  25

  25. CHECK REAR COMBINATION LIGHT LENS AND BODY LH 

    Pre-procedure1

    1. Remove the rear combination light socket and wire sub-assembly LH.

      HINT: 

      Refer to DISASSEMBLY [02/2024 - ]

    2. Reconnect the K49 rear combination light lens and body LH connector.

      Procedure1

    3. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    4. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1507-18 is output. B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT LENS AND BODY LH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    A 

    See step  26

  26. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY GROUND) 

    Pre-procedure1

    1. Disconnect the E8*1 or E5*2 combination meter assembly connector.
      1. *1: for 7 Inch Multi-information Display Type
      2. *2: for 12.3 Inch Multi-information Display Type
    2. Disconnect the K49 rear combination light socket and wire sub-assembly LH connector.

      Procedure1

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

      Standard Resistance

      FOR 7 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E8-31 (TRNL) - Body ground Always 10 kΩ or higher
      FOR 12.3 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E5-22 (TRNL) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  27. CHECK REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY RH 

    Pre-procedure1

    1. Disconnect the K50 rear combination light socket and wire sub-assembly RH connector.

      Procedure1

    2. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1507-18 is output. B

      Post-procedure1

    4. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY RH 

    Refer to DISASSEMBLY [02/2024 - ]

    Result: 

    A 

    See step  28

  28. CHECK REAR COMBINATION LIGHT LENS AND BODY RH 

    Pre-procedure1

    1. Remove the rear combination light socket and wire sub-assembly RH.

      HINT: 

      Refer to DISASSEMBLY [02/2024 - ]

    2. Reconnect the K50 rear combination light lens and body RH connector.

      Procedure1

    3. Clear the DTCs.

      Body Electrical > Combination Meter > Clear DTCs 

    4. Check for DTCs.

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      B1508-19 is output. A
      B1507-18 is output. B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT LENS AND BODY RH 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    A 

    See step  29

  29. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY GROUND) 

    Pre-procedure1

    1. Disconnect the E8*1 or E5*2 combination meter assembly connector.
      1. *1: for 7 Inch Multi-information Display Type
      2. *2: for 12.3 Inch Multi-information Display Type
    2. Disconnect the K50 rear combination light socket and wire RH connector.

      Procedure1

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

      Standard Resistance

      FOR 7 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E8-32 (TRNR) - Body ground Always 10 kΩ or higher
      FOR 12.3 INCH MULTI-INFORMATION DISPLAY TYPE

      Tester Connection Condition Specified Condition
      E5-21 (TRNR) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [02/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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