LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2013 >> GS 350 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit >> Procedure

DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit: Procedure

  1. CHECK FOR DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR [12/2011 - ] .
    2. Check for DTCs. Refer to DTC CHECK / CLEAR [12/2011 - ] .

      OK

      DTC B1507 or B1508 output does not occur.

    NG → See step   2 

    OK → See step   18 

  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 → See step   4 

    C → See step   5 

    D → See step   11 

    A: Go to next step 

  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 → See step   19 

  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 → See step   19 

  5. CONFIRM MALFUNCTIONING LIGHT (RH SIDE) 
    1. Check the malfunctioning turn signal light.
      RESULT

      Result Proceed to
      Front turn signal light does not illuminate A
      Side turn signal light does not illuminate B
      Rear turn signal light does not illuminate C

    B → See step   7 

    C → See step   10 

    A: Go to next step 

  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 Always Below 1 Ω
      B2-21 - Body ground
      N39-13 (LR) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   27 

  7. 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: Go to next step 

  8. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH 
    1. Remove the outer rear view mirror assembly RH. Refer to REMOVAL [12/2011 - ] .
      GTY412128Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 → See step   9 

    OK → See step   20 

  9. INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY RH 
    1. Remove the side turn signal light assembly RH. Refer to REMOVAL [12/2011 - ] .
    2. Inspect the side turn signal light assembly RH. Refer to INSPECTION [12/2011 - ] .

    NG → See step   22 

    OK → See step   21 

  10. 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 → See step   23 

  11. CONFIRM MALFUNCTIONING LIGHT (LH SIDE) 
    1. Check the malfunctioning turn signal light.
      RESULT

      Result Proceed to
      Front turn signal light does not illuminate A
      Side turn signal light does not illuminate B
      Rear turn signal light does not illuminate C

    B → See step   13 

    C → See step   16 

    A: Go to next step 

  12. 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 Always Below 1 Ω
      B5-21 - Body ground
      N39-7 (LL) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   28 

  13. 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: Go to next step 

  14. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH 
    1. Remove the outer rear view mirror assembly LH. Refer to REMOVAL [12/2011 - ] .
      GTY412128Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 → See step   15 

    OK → See step   24 

  15. INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY LH 
    1. Remove the side turn signal light assembly LH. Refer to REMOVAL [12/2011 - ] .
    2. Inspect the side turn signal light assembly LH. Refer to INSPECTION [12/2011 - ] .

    NG → See step   26 

    OK → See step   25 

  16. 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 → See step   17 

  17. REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY LH. Refer to  REMOVAL [12/2011 - ] 
  18. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2011 - ] 
  19. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2011 - ] 
  20. REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH. Refer to  DISASSEMBLY [12/2011 - ] 
  21. REPLACE OUTER MIRROR ACTUATOR SUB-ASSEMBLY RH. Refer to  DISASSEMBLY [12/2011 - ] 
  22. REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [12/2011 - ] 
  23. REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE SUB-ASSEMBLY RH. Refer to  REMOVAL [12/2011 - ] 
  24. REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH. Refer to  DISASSEMBLY [12/2011 - ] 
  25. REPLACE OUTER MIRROR ACTUATOR SUB-ASSEMBLY LH. Refer to  DISASSEMBLY [12/2011 - ] 
  26. REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [12/2011 - ] 
  27. REPLACE HEADLIGHT UNIT ASSEMBLY RH. Refer to  DISASSEMBLY [12/2011 - ] 
  28. REPLACE HEADLIGHT UNIT ASSEMBLY LH. Refer to  DISASSEMBLY [12/2011 - ] 
scientia non olet · About LEMON Manuals