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Home >> Lexus >> 2023 >> NX 350 Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes (1 Of 2) >> Meter / Gauge System >> DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [03/2022 - ] >> Procedure

DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [03/2022 - ]: Procedure

  1. CHECK SYMPTOMS 
    1. Operate the turn signal switch and check the problem symptoms.

      Result

      Result Proceed to
      Front turn signal light (LH side) does not blink A
      Side turn signal light (LH side) does not blink B
      Rear turn signal light (LH side) does not blink C
      Front turn signal light (RH side) does not blink D
      Side turn signal light (RH side) does not blink E
      Rear turn signal light (RH side) does not blink F

    Result: 

    B 

    See step  3

    Result: 

    C 

    See step  25

    Result: 

    D 

    See step  31

    Result: 

    E 

    See step  32

    Result: 

    F 

    See step  52

    Result: 

    A 

    See step  2

  2. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except TMMC Made A
      for TMMC Made B

    Result: 

    A 

    See step  4

    Result: 

    B 

    See step  17

  3. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except TMMC Made A
      for TMMC Made B

    Result: 

    B 

    See step  17

    Result: 

    A 

    See step  4

  4. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/ Automatic Headlight Beam Level Control System A
      w/o Automatic Headlight Beam Level Control System B

    Result: 

    B 

    See step  11

    Result: 

    A 

    See step  5

  5. INSPECT HEADLIGHT ECU SUB-ASSEMBLY LH 

    Pre-procedure1

    1. Remove the headlight ECU sub-assembly LH from the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1071259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Headlight ECU Sub-assembly LH)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A49-11 (TNS) - A49-12 (GND) Always 10 kΩ or higher
      B-20 (TURN+) - B-6 (TURN-) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  6

  6. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for LED Type Turn Signal Light A
      for Bulb Type Turn Signal Light B

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  7

  7. CHECK TURN SIGNAL LIGHT (HEADLIGHT TURN SIGNAL LED UNIT LH) 

    Pre-procedure1

    1. Remove the headlight turn signal LED unit LH from the headlight unit assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the headlight turn signal LED unit RH from the headlight unit assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the headlight turn signal LED unit LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE HEADLIGHT TURN SIGNAL LED UNIT LH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  8

  8. CHECK TURN SIGNAL LIGHT (HEADLIGHT UNIT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the headlight unit assembly LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the headlight unit assembly RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the headlight unit assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    A 

    See step  12

    Result: 

    B 

    REPLACE HEADLIGHT UNIT ASSEMBLY LH. Refer to  DISASSEMBLY [03/2022 - ] 

  9. CHECK TURN SIGNAL LIGHT (FRONT TURN SIGNAL LIGHT SOCKET AND WIRE LH) 

    Pre-procedure1

    1. Remove the front turn signal light socket and wire LH from the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the front turn signal light socket and wire RH from the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the front turn signal light socket and wire LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE FRONT TURN SIGNAL LIGHT SOCKET AND WIRE LH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  10

  10. CHECK TURN SIGNAL LIGHT (HEADLIGHT UNIT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the headlight unit assembly LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the headlight unit assembly RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the headlight unit assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    A 

    See step  12

    Result: 

    B 

    REPLACE HEADLIGHT UNIT ASSEMBLY LH. Refer to  DISASSEMBLY [03/2022 - ] 

  11. CHECK TURN SIGNAL LIGHT (FRONT TURN SIGNAL LIGHT SOCKET LH) 

    Pre-procedure1

    1. Remove the front turn signal light socket LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the front turn signal light socket RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the front turn signal light socket LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE FRONT TURN SIGNAL LIGHT SOCKET RH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  12

  12. INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY LH 

    Pre-procedure1

    1. Remove the outer mirror control ECU assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1068331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Outer Mirror Control ECU Assembly LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D-16 (T+) - D-12 (GND) Always 10 kΩ or higher
      E33-11 (TRNI) - E33-7 (GND) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  13

  13. CHECK TURN SIGNAL LIGHT (OUTER REAR VIEW MIRROR ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    2. Remove the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    3. Interchange the outer rear view mirror assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.
      NOTE:

      If the front/side turn signal light (LH side) operates normally, return the outer rear view mirror assembly LH and outer rear view mirror assembly RH that were interchanged in a previous step back to their original conditions so that a component of the outer rear view mirror assembly LH can be inspected in the next step.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    See step  16

    Result: 

    A 

    See step  14

  14. CHECK TURN SIGNAL LIGHT (HAZARD WARNING SIGNAL SWITCH ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the D30 hazard warning signal switch assembly connector.

      Procedure1

    2. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    3. None

    Result: 

    B 

    REPLACE HAZARD WARNING SIGNAL SWITCH ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  15

  15. CHECK HARNESS AND CONNECTOR (FRONT/ SIDE TURN SIGNAL LIGHT (LH SIDE) - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the A49*1 or A60*2 headlight assembly LH connector.
    2. Disconnect the E33 outer mirror control ECU assembly LH connector.
    3. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A49-11 (TNS)*1, A60-1 (B)*2, E33-11 (TRNI), D30-4 (HFL) or D22-5 (LL) - Body ground Always 10 kΩ or higher
      1. *1: w/ Automatic Headlight Beam Level Control System
      2. *2: w/o Automatic Headlight Beam Level Control System

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  16. CHECK TURN SIGNAL LIGHT (SIDE TURN SIGNAL LIGHT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    2. Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    3. Interchange the side turn signal light assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Front/side turn signal light (LH side) operates normally A
      Front/side turn signal light (LH side) does not blink B

      Post-procedure1

    5. None

    Result: 

    A 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [03/2022 - ] 

    Result: 

    B 

    REPLACE OUTER MIRROR RETRACTOR LH. Refer to  DISASSEMBLY [03/2022 - ] 

  17. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/ Automatic Headlight Beam Level Control System A
      w/o Automatic Headlight Beam Level Control System B

    Result: 

    B 

    See step  19

    Result: 

    A 

    See step  18

  18. CHECK TURN SIGNAL LIGHT (HEADLIGHT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the headlight assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    A 

    See step  20

    Result: 

    B 

    REPLACE HEADLIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2021 - ] 

  19. CHECK TURN SIGNAL LIGHT (HEADLIGHT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the headlight assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE HEADLIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  20

  20. INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY LH 

    Pre-procedure1

    1. Remove the outer mirror control ECU assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1068331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Outer Mirror Control ECU Assembly LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D-16 (T+) - D-12 (GND) Always 10 kΩ or higher
      E33-11 (TRNI) - E33-7 (GND) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  21

  21. CHECK TURN SIGNAL LIGHT (OUTER REAR VIEW MIRROR ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    2. Remove the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    3. Interchange the outer rear view mirror assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.
      NOTE:

      If the front/side turn signal light (LH side) operates normally, return the outer rear view mirror assembly LH and outer rear view mirror assembly RH that were interchanged in a previous step back to their original conditions so that a component of the outer rear view mirror assembly LH can be inspected in the next step.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    See step  24

    Result: 

    A 

    See step  22

  22. CHECK TURN SIGNAL LIGHT (HAZARD WARNING SIGNAL SWITCH ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the D30 hazard warning signal switch assembly connector.

      Procedure1

    2. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (LH side) does not blink)      		 A
      Front/side turn signal light (LH side) operates normally B

      Post-procedure1

    3. None

    Result: 

    B 

    REPLACE HAZARD WARNING SIGNAL SWITCH ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  23

  23. CHECK HARNESS AND CONNECTOR (FRONT/ SIDE TURN SIGNAL LIGHT (LH SIDE) - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the A49*1 or A60*2 headlight assembly LH connector.
    2. Disconnect the E33 outer mirror control ECU assembly LH connector.
    3. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A49-11 (TNS)*1, A60-1 (B)*2, E33-11 (TRNI), D30-4 (HFL) or D22-5 (LL) - Body ground Always 10 kΩ or higher
      1. *1: w/ Automatic Headlight Beam Level Control System
      2. *2: w/o Automatic Headlight Beam Level Control System

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  24. CHECK TURN SIGNAL LIGHT (SIDE TURN SIGNAL LIGHT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    2. Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    3. Interchange the side turn signal light assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Front/side turn signal light (LH side) operates normally A
      Front/side turn signal light (LH side) does not blink B

      Post-procedure1

    5. None

    Result: 

    A 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [03/2022 - ] 

    Result: 

    B 

    REPLACE OUTER MIRROR RETRACTOR LH. Refer to  DISASSEMBLY [03/2022 - ] 

  25. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except TMMC Made A
      for TMMC Made B

    Result: 

    B 

    See step  29

    Result: 

    A 

    See step  26

  26. CHECK TURN SIGNAL LIGHT (REAR COMBINATION LIGHT SOCKET AND WIRE LH) 

    Pre-procedure1

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

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the rear combination light socket and wire RH from the rear combination light assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the rear combination light socket and wire LH with RH and connect the connectors.

      Procedure1

    4. Check the rear turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Rear turn signal light (LH side) does not blink)      		 A
      Rear turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE LH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  27

  27. CHECK TURN SIGNAL LIGHT (REAR COMBINATION LIGHT LENS AND BODY LH) 

    Pre-procedure1

    1. Remove the rear combination light lens and body LH from the rear combination light assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the rear combination light lens and body RH from the rear combination light assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the rear combination light lens and body LH with RH and connect the connectors.

      Procedure1

    4. Check the rear turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Rear turn signal light (LH side) does not blink)      		 A
      Rear turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT LENS AND BODY LH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  28

  28. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT (LH SIDE) - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the G109 rear combination light assembly LH connector.
    2. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G109-6 (TRN) or D22-22 (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 [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  29. CHECK TURN SIGNAL LIGHT (REAR COMBINATION LIGHT ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the rear combination light assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the rear combination light assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the rear combination light assembly LH with RH and connect the connectors.

      Procedure1

    4. Check the rear turn signal light (LH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Rear turn signal light (LH side) does not blink)      		 A
      Rear turn signal light (LH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  30

  30. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the G109 rear combination light assembly LH connector.
    2. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G109-6 (TRN) or D22-22 (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 [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  31. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except TMMC Made A
      for TMMC Made B

    Result: 

    A 

    See step  33

    Result: 

    B 

    See step  45

  32. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except TMMC Made A
      for TMMC Made B

    Result: 

    B 

    See step  45

    Result: 

    A 

    See step  33

  33. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/ Automatic Headlight Beam Level Control System A
      w/o Automatic Headlight Beam Level Control System B

    Result: 

    B 

    See step  40

    Result: 

    A 

    See step  34

  34. INSPECT HEADLIGHT ECU SUB-ASSEMBLY RH 

    Pre-procedure1

    1. Remove the headlight ECU sub-assembly RH from the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1068449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Headlight ECU Sub-assembly RH)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A50-11 (TNS) - A50-12 (GND) Always 10 kΩ or higher
      C-20 (TURN+) - C-6 (TURN-) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  35

  35. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for LED Type Turn Signal Light A
      for Bulb Type Turn Signal Light B

    Result: 

    B 

    See step  38

    Result: 

    A 

    See step  36

  36. CHECK TURN SIGNAL LIGHT (HEADLIGHT TURN SIGNAL LED UNIT RH) 

    Pre-procedure1

    1. Remove the headlight turn signal LED unit RH from the headlight unit assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the headlight turn signal LED unit LH from the headlight unit assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the headlight turn signal LED unit RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE HEADLIGHT TURN SIGNAL LED UNIT RH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  37

  37. CHECK TURN SIGNAL LIGHT (HEADLIGHT UNIT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the headlight unit assembly RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the headlight unit assembly LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the headlight unit assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    A 

    See step  41

    Result: 

    B 

    REPLACE HEADLIGHT UNIT ASSEMBLY RH. Refer to  DISASSEMBLY [03/2022 - ] 

  38. CHECK TURN SIGNAL LIGHT (FRONT TURN SIGNAL LIGHT SOCKET AND WIRE RH) 

    Pre-procedure1

    1. Remove the front turn signal light socket and wire RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the front turn signal light socket and wire LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the front turn signal light socket and wire RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE FRONT TURN SIGNAL LIGHT SOCKET AND WIRE RH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  39

  39. CHECK TURN SIGNAL LIGHT (HEADLIGHT UNIT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the headlight unit assembly RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the headlight unit assembly LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the headlight unit assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    A 

    See step  41

    Result: 

    B 

    REPLACE HEADLIGHT UNIT ASSEMBLY RH. Refer to  DISASSEMBLY [03/2022 - ] 

  40. CHECK TURN SIGNAL LIGHT (FRONT TURN SIGNAL LIGHT SOCKET RH) 

    Pre-procedure1

    1. Remove the front turn signal light socket RH from the headlight assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the front turn signal light socket LH from the headlight assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the front turn signal light socket RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE FRONT TURN SIGNAL LIGHT SOCKET RH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  41

  41. INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY RH 

    Pre-procedure1

    1. Remove the outer mirror control ECU assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1068332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Outer Mirror Control ECU Assembly RH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      F-16 (T+) - F-12 (GND) Always 10 kΩ or higher
      F11-11 (TRNI) - E11-7 (GND) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  42

  42. CHECK TURN SIGNAL LIGHT (OUTER REAR VIEW MIRROR ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    2. Remove the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    3. Interchange the outer rear view mirror assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.
      NOTE:

      If the front/side turn signal light (RH side) operates normally, return the outer rear view mirror assembly RH and outer rear view mirror assembly LH that were interchanged in a previous step back to their original conditions so that a component of the outer rear view mirror assembly RH can be inspected in the next step.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    See step  44

    Result: 

    A 

    See step  43

  43. CHECK HARNESS AND CONNECTOR (FRONT/ SIDE TURN SIGNAL LIGHT (RH SIDE) - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the A50*1 or A59*2 headlight assembly RH connector.
    2. Disconnect the E11 outer mirror control ECU assembly RH connector.
    3. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A50-11 (TNS)*1, A59-1 (B)*2, E11-11 (TRNI) or D22-6 (LR) - Body ground Always 10 kΩ or higher
      1. *1: w/ Automatic Headlight Beam Level Control System
      2. *2: w/o Automatic Headlight Beam Level Control System

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  44. CHECK TURN SIGNAL LIGHT (SIDE TURN SIGNAL LIGHT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    2. Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    3. Interchange the side turn signal light assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Front/side turn signal light (RH side) operates normally A
      Front/side turn signal light (RH side) does not blink B

      Post-procedure1

    5. None

    Result: 

    A 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [03/2022 - ] 

    Result: 

    B 

    REPLACE OUTER MIRROR RETRACTOR RH. Refer to  DISASSEMBLY [03/2022 - ] 

  45. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/ Automatic Headlight Beam Level Control System A
      w/o Automatic Headlight Beam Level Control System B

    Result: 

    B 

    See step  47

    Result: 

    A 

    See step  46

  46. CHECK TURN SIGNAL LIGHT (HEADLIGHT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the headlight assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    A 

    See step  48

    Result: 

    B 

    REPLACE HEADLIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2021 - ] 

  47. CHECK TURN SIGNAL LIGHT (HEADLIGHT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the headlight assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the headlight assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the headlight assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE HEADLIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  48

  48. INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY RH 

    Pre-procedure1

    1. Remove the outer mirror control ECU assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1068332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Outer Mirror Control ECU Assembly RH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      F-16 (T+) - F-12 (GND) Always 10 kΩ or higher
      F11-11 (TRNI) - E11-7 (GND) Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    OK 

    See step  49

  49. CHECK TURN SIGNAL LIGHT (OUTER REAR VIEW MIRROR ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    2. Remove the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]

    3. Interchange the outer rear view mirror assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.
      NOTE:

      If the front/side turn signal light (RH side) operates normally, return the outer rear view mirror assembly RH and outer rear view mirror assembly LH that were interchanged in a previous step back to their original conditions so that a component of the outer rear view mirror assembly RH can be inspected in the next step.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Front/side turn signal light (RH side) does not blink)      		 A
      Front/side turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    See step  51

    Result: 

    A 

    See step  50

  50. CHECK HARNESS AND CONNECTOR (FRONT/ SIDE TURN SIGNAL LIGHT (RH SIDE) - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the A50*1 or A59*2 headlight assembly RH connector.
    2. Disconnect the E11 outer mirror control ECU assembly RH connector.
    3. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A50-11 (TNS)*1, A59-1 (B)*2, E11-11 (TRNI) or D22-6 (LR) - Body ground Always 10 kΩ or higher
      1. *1: w/ Automatic Headlight Beam Level Control System
      2. *2: w/o Automatic Headlight Beam Level Control System

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    5. None

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  51. CHECK TURN SIGNAL LIGHT (SIDE TURN SIGNAL LIGHT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    2. Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

      HINT: 

      Refer to REMOVAL [03/2022 - ]

    3. Interchange the side turn signal light assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the front/side turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Front/side turn signal light (RH side) operates normally A
      Front/side turn signal light (RH side) does not blink B

      Post-procedure1

    5. None

    Result: 

    A 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [03/2022 - ] 

    Result: 

    B 

    REPLACE OUTER MIRROR RETRACTOR RH. Refer to  DISASSEMBLY [03/2022 - ] 

  52. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except TMMC Made A
      for TMMC Made B

    Result: 

    B 

    See step  56

    Result: 

    A 

    See step  53

  53. CHECK TURN SIGNAL LIGHT (REAR COMBINATION LIGHT SOCKET AND WIRE RH) 

    Pre-procedure1

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

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the rear combination light socket and wire LH from the rear combination light assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the rear combination light socket and wire RH with LH and connect the connectors.

      Procedure1

    4. Check the rear turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Rear turn signal light (RH side) does not blink)      		 A
      Rear turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT SOCKET AND WIRE RH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  54

  54. CHECK TURN SIGNAL LIGHT (REAR COMBINATION LIGHT LENS AND BODY RH) 

    Pre-procedure1

    1. Remove the rear combination light lens and body RH from the rear combination light assembly RH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    2. Remove the rear combination light lens and body LH from the rear combination light assembly LH.

      HINT: 

      Refer to DISASSEMBLY [03/2022 - ]

    3. Interchange the rear combination light lens and body RH with LH and connect the connectors.

      Procedure1

    4. Check the rear turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Rear turn signal light (RH side) does not blink)      		 A
      Rear turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT LENS AND BODY RH. Refer to  DISASSEMBLY [03/2022 - ] 

    Result: 

    A 

    See step  55

  55. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT (RH SIDE) - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the G18 rear combination light assembly RH connector.
    2. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G18-6 (TRN) or D22-21 (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 [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  56. CHECK TURN SIGNAL LIGHT (REAR COMBINATION LIGHT ASSEMBLY RH) 

    Pre-procedure1

    1. Remove the rear combination light assembly RH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    2. Remove the rear combination light assembly LH.

      HINT: 

      Refer to REMOVAL [11/2021 - ]

    3. Interchange the rear combination light assembly RH with LH and connect the connectors.

      Procedure1

    4. Check the rear turn signal light (RH side) operates normally.

      Result

      Result Proceed to
      Problem symptoms do not change
      (Rear turn signal light (RH side) does not blink)      		 A
      Rear turn signal light (RH side) operates normally B

      Post-procedure1

    5. None

    Result: 

    B 

    REPLACE REAR COMBINATION LIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    A 

    See step  57

  57. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY) 

    Pre-procedure1

    1. Disconnect the G18 rear combination light assembly RH connector.
    2. Disconnect the D22 combination meter assembly connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G18-6 (TRN) or D22-21 (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 [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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