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Home >> Lexus >> 2021 >> RX 350 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display - Diagnostic Codes >> Meter / Gauge System >> DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [09/2015 - 12/2017] >> Procedure

DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [09/2015 - 12/2017]: Procedure

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

      Result

      Result Proceed to
      Front or side turn signal light does not blink or flash at the correct speed. A
      Rear turn signal light does not blink or flash at the correct speed. B

    Result: 

    B 

    See step  16

    Result: 

    A 

    See step  2

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

      Result

      Result Proceed to
      All RH turn signal lights or all LH turn signal lights do not blink or flash at the correct speed. A
      RH side turn signal light does not blink or flash at the correct speed. B
      LH side turn signal light does not blink or flash at the correct speed. C

    Result: 

    B 

    See step  4

    Result: 

    C 

    See step  10

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. for RH side:
      1. Disconnect the J11 combination meter assembly connector.
      2. Disconnect the A50 headlight ECU sub-assembly RH connector*1.
      3. Disconnect the A25 headlight assembly RH connector*2.
      4. Disconnect the M4 outer mirror control ECU assembly RH connector.
      5. Measure the resistance according to the value(s) in the table below.

        Standard Resistance (Check for Open)

        Tester Connection Condition Specified Condition
        J11-7 (LR) - A50-11 (TNS) or M4-11 (TRNI)*1 Always Below 1 Ω
        J11-7 (LR) - A25-1 (B) or M4-11 (TRNI)*2 Always Below 1 Ω

        Standard Resistance (Check for Short)

        Tester Connection Condition Specified Condition
        J11-7 (LR), A50-11 (TNS) or M4-11 (TRNI) - Body ground*1 Always 10 kΩ or higher
        J11-7 (LR), A25-1 (B) or M4-11 (TRNI) - Body ground*2 Always 10 kΩ or higher
        1. *1: w/ Automatic Headlight Beam Level Control System
        2. *2: w/o Automatic Headlight Beam Level Control System
    2. for LH side:
      1. Disconnect the J11 combination meter assembly connector.
      2. Disconnect the A49 headlight ECU sub-assembly LH connector*1.
      3. Disconnect the A21 headlight assembly LH connector*2.
      4. Disconnect the N4 outer mirror control ECU assembly LH connector.
      5. Measure the resistance according to the value(s) in the table below.

        Standard Resistance (Check for Open)

        Tester Connection Condition Specified Condition
        J11-13 (LL) - A49-11 (TNS) or N4-11 (TRNI)*1 Always Below 1 Ω
        J11-13 (LL) - A21-1 (B) or N4-11 (TRNI)*2 Always Below 1 Ω

        Standard Resistance (Check for Short)

        Tester Connection Condition Specified Condition
        J11-13 (LL), A49-11 (TNS) or N4-11 (TRNI) - Body ground*1 Always 10 kΩ or higher
        J11-13 (LL), A21-1 (B) or N4-11 (TRNI) - Body ground*2 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

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  4. CHECK TURN SIGNAL LIGHTS (RH SIDE) 
    1. Turn the engine switch on (IG).
    2. Set the headlight dimmer switch assembly to the right turn switch position.
    3. Check the operation of the turn signal lights (RH side).

      Result

      Result Proceed to
      Front turn signal light RH does not blink or flash at the correct speed (w/ Automatic Headlight Beam Level Control System). A
      Front turn signal light RH does not blink or flash at the correct speed (w/o Automatic Headlight Beam Level Control System). B
      Side turn signal light RH does not blink or flash at the correct speed. C

    Result: 

    B 

    See step  7

    Result: 

    C 

    See step  8

    Result: 

    A 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the A50 headlight ECU sub-assembly RH connector.
    3. Disconnect the M4 outer mirror control ECU assembly RH connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-7 (LR) - A50-11 (TNS) Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-7 (LR) or A50-11 (TNS) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH 
    1. Replace the headlight ECU sub-assembly RH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE HEADLIGHT ASSEMBLY RH 

    for Triple Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    for Single Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    Result: 

    B 

    END 

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the A25 headlight assembly RH connector.
    3. Disconnect the M4 outer mirror control ECU assembly RH connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-7 (LR) - A25-1 (B) Always Below 1 Ω
      A25-2 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-7 (LR) or A25-1 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HEADLIGHT ASSEMBLY 

    for Triple Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    for Single Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the A50 headlight ECU sub-assembly RH connector*1.
    3. Disconnect the A25 headlight assembly RH connector*2.
    4. Disconnect the M4 outer mirror control ECU assembly RH connector.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-7 (LR) - M4-11 (TRNI) Always Below 1 Ω
      M4-7 (GND) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-7 (LR) or M4-11 (TRNI) - 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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH 
    1. Replace the outer mirror control ECU assembly RH with a new or known good one.

      Refer to REMOVAL [09/2015 - ]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2015 - ] 

    Result: 

    B 

    END 

  10. CHECK TURN SIGNAL LIGHTS (LH SIDE) 
    1. Turn the engine switch on (IG).
    2. Set the headlight dimmer switch assembly to the left turn switch position.
    3. Check the operation of the turn signal lights (LH side).

      Result

      Result Proceed to
      Front turn signal light LH does not blink or flash at the correct speed (w/ Automatic Headlight Beam Level Control System). A
      Front turn signal light LH does not blink or flash at the correct speed (w/o Automatic Headlight Beam Level Control System). B
      Side turn signal light LH does not blink or flash at the correct speed. C

    Result: 

    B 

    See step  13

    Result: 

    C 

    See step  14

    Result: 

    A 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the A49 headlight ECU sub-assembly LH connector.
    3. Disconnect the N4 outer mirror control ECU assembly LH connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-13 (LL) - A49-11 (TNS) Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-13 (LL) or A49-11 (TNS) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH 
    1. Replace the headlight ECU sub-assembly LH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE HEADLIGHT ASSEMBLY LH 

    for Triple Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    for Single Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    Result: 

    B 

    END 

  13. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the A21 headlight assembly LH connector.
    3. Disconnect the N4 outer mirror control ECU assembly LH connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-13 (LL) - A21-1 (B) Always Below 1 Ω
      A21-2 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-13 (LL) or A21-1 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HEADLIGHT ASSEMBLY LH 

    for Triple Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    for Single Beam Headlight: Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  14. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the A49 headlight ECU sub-assembly LH connector*1.
    3. Disconnect the A21 headlight assembly LH connector*2.
    4. Disconnect the N4 outer mirror control ECU assembly LH connector.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-13 (LL) - N4-11 (TRNI) Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-13 (LL) or N4-11 (TRNI) - 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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  15

  15. REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH 
    1. Replace the outer mirror control ECU assembly LH with a new or known good one.

      Refer to REMOVAL [09/2015 - ]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2015 - ] 

    Result: 

    B 

    END 

  16. CONFIRM MODEL 
    1. Choose the rear turn signal light type to be inspected.

      Result

      Result Proceed to
      for LED Type A
      for Bulb Type B

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  17

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

      Result

      Result Proceed to
      RH side turn signal light does not blink. A
      RH side turn signal light does not flash at the correct speed. B
      LH side turn signal light does not blink. C
      LH side turn signal light does not flash at the correct speed. D

    Result: 

    B 

    See step  25

    Result: 

    C 

    See step  32

    Result: 

    D 

    See step  39

    Result: 

    A 

    See step  18

  18. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the 2A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J11-5 (TRNR) - 2A-4 Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  19

  19. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY648077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected (Instrument Panel Junction Block Assembly) - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      2A-4 - 2D-17 Always Below 1 Ω
      2A-4 - 2D-16 Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  20

  20. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR LIGHT ASSEMBLY RH) 
    1. Disconnect the Z20 rear light assembly RH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z20-6 (B) - 2D-17 Always Below 1 Ω
      Z20-1 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  21

  21. CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY RH - REAR COMBINATION LIGHT ASSEMBLY RH) 
    1. Disconnect the S33 rear combination light assembly RH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z20-4 (TRN4) - S33-5 (TRN1) Always Below 1 Ω
      Z20-5 (TRN3) - S33-6 (TRN2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  22

  22. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR COMBINATION LIGHT ASSEMBLY RH) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2D-16 - S33-4 (TRN) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  23

  23. REPLACE REAR LIGHT ASSEMBLY RH 
    1. Replace the rear light assembly RH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  24

  24. REPLACE REAR COMBINATION LIGHT ASSEMBLY RH 
    1. Replace the rear combination light assembly RH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    B 

    END 

  25. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the 2A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J11-5 (TRNR) or 2A-4 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  26

  26. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY680342Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      2A-4, 2D-17 or 2D-16 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  27

  27. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR REAR LIGHT ASSEMBLY RH - BODY GROUND) 
    1. Disconnect the Z20 rear light assembly RH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2D-17 or Z20-6 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  28

  28. CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY RH OR REAR COMBINATION LIGHT ASSEMBLY RH - BODY GROUND) 
    1. Disconnect the S33 rear combination light assembly RH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z20-4 (TRN4) or S33-5 (TRN1) - Body ground Always 10 kΩ or higher
      Z20-5 (TRN3) or S33-6 (TRN2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  29

  29. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR REAR COMBINATION LIGHT ASSEMBLY RH - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2D-16 or S33-4 (TRN) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  30

  30. REPLACE REAR LIGHT ASSEMBLY RH 
    1. Replace the rear light assembly RH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  31

  31. REPLACE REAR COMBINATION LIGHT ASSEMBLY RH 
    1. Replace the rear combination light assembly RH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    B 

    END 

  32. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the 2A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J11-11 (TRNL) - 2A-5 Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  33

  33. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY648075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      2A-5 - 2D-14 Always Below 1 Ω
      2A-5 - 2D-13 Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  34

  34. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR LIGHT ASSEMBLY LH) 
    1. Disconnect the Z21 rear light assembly LH connector.
    2. Disconnect the 2D instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z21-6 (B) - 2D-14 Always Below 1 Ω
      Z21-1 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  35

  35. CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY LH - REAR COMBINATION LIGHT ASSEMBLY LH) 
    1. Disconnect the S31 rear combination light assembly LH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z21-4 (TRN4) - S31-5 (TRN1) Always Below 1 Ω
      Z21-5 (TRN3) - S31-6 (TRN2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  36

  36. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR COMBINATION LIGHT ASSEMBLY LH) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2D-13 - S31-4 (TRN) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  37

  37. REPLACE REAR LIGHT ASSEMBLY LH 
    1. Replace the rear light assembly LH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  38

  38. REPLACE REAR COMBINATION LIGHT ASSEMBLY LH 
    1. Replace the rear combination light assembly LH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    B 

    END 

  39. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the 2A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J11-11 (TRNL) or 2A-5 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  40

  40. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY648073Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      2A-5, 2D-14 or 2D-13 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  41

  41. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR REAR LIGHT ASSEMBLY LH - BODY GROUND) 
    1. Disconnect the Z21 rear light assembly LH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2D-14 or Z21-6 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  42

  42. CHECK HARNESS AND CONNECTOR (REAR LIGHT ASSEMBLY LH OR REAR COMBINATION LIGHT ASSEMBLY LH - BODY GROUND) 
    1. Disconnect the S31 rear combination light assembly LH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Z21-4 (TRN4) or S31-5 (TRN1) - Body ground Always 10 kΩ or higher
      Z21-5 (TRN3) or S31-6 (TRN2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  43

  43. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR REAR COMBINATION LIGHT ASSEMBLY LH - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2D-13 or S31-4 (TRN) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  44

  44. REPLACE REAR LIGHT ASSEMBLY LH 
    1. Replace the rear light assembly LH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  45

  45. REPLACE REAR COMBINATION LIGHT ASSEMBLY LH 
    1. Replace the rear combination light assembly LH with a new or known good one.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      DTCs are output. A
      DTCs are not output. B

    Result: 

    A 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    B 

    END 

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

      Result

      Result Proceed to
      RH side turn signal light does not blink or flash at the correct speed. A
      LH side turn signal light does not blink or flash at the correct speed. B

    Result: 

    B 

    See step  50

    Result: 

    A 

    See step  47

  47. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the 2A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-5 (TRNR) - 2A-4 Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-5 (TRNR) or 2A-4 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  48

  48. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY648074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      2A-4 - 2D-16 Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      2A-4 or 2D-16 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  49

  49. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. Disconnect the S33 rear combination light assembly RH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      S33-4 (TRN) - 2D-16 Always Below 1 Ω
      S33-3 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      S33-4 (TRN) or 2D-16 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR COMBINATION LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  50. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. Disconnect the J11 combination meter assembly connector.
    2. Disconnect the 2A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J11-11 (TRNL) - 2A-5 Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J11-11 (TRNL) or 2A-5 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  51

  51. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the instrument panel junction block assembly.

      Refer to REMOVAL [09/2015 - 08/2016] Refer to REMOVAL [08/2016 - 08/2019]

    2. Measure the resistance according to the value(s) in the table below.
      GTY648070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      2A-5 - 2D-13 Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      2A-5 or 2D-13 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    OK 

    See step  52

  52. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OR BODY GROUND) 
    1. Disconnect the S31 rear combination light assembly LH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      S31-4 (TRN) - 2D-13 Always Below 1 Ω
      S31-3 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      S31-4 (TRN) or 2D-13 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR COMBINATION LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2015 - 08/2016]  Refer to  REMOVAL [08/2016 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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