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Home >> Lexus >> 2017 >> ES 300h >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [07/2015 - ] >> Procedure

DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [07/2015 - ]: Procedure

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

      Result

      Result Proceed to
      Turn signal lights for one side do not illuminate. A
      Front turn signal light does not illuminate. B
      Rear turn signal light does not illuminate. C
      Side turn signal light does not illuminate (w/o Reverse Shift-linked Mirror). D
      Side turn signal light does not illuminate (w/ Reverse Shift-linked Mirror). E

    Result:  B

    B 

    See step  3

    Result:  C

    C 

    See step  4

    Result:  D

    D 

    See step  5

    Result:  E

    E 

    See step  6

    Result:  A

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the H13 combination meter assembly connector.
    2. Disconnect the 3A instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      FOR LH

      Tester Connection Condition Specified Condition
      H13-13 (LL) - 3A-20 Always Below 1 Ω
      FOR RH

      Tester Connection Condition Specified Condition
      H13-7 (LR) - 3A-37 Always Below 1 Ω

      Standard Resistance (Check for Short)

      FOR LH

      Tester Connection Condition Specified Condition
      H13-13 (LL) - Body ground Always 10 kΩ or higher
      FOR RH

      Tester Connection Condition Specified Condition
      H13-7 (LR) - Body ground Always 10 kΩ or higher

      Result

      Result Proceed to
      NG A
      OK B

    Result:  A

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  B

    B 

    See step  7

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the A67*1 or A71*2 headlight assembly connector.
      • *1: for LH
      • *2: for RH
    2. Disconnect the 3D instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      FOR LH

      Tester Connection Condition Specified Condition
      A67-1 (B) - 3D-10 Always Below 1 Ω
      A67-2 (E) - Body ground Always Below 1 Ω
      FOR RH

      Tester Connection Condition Specified Condition
      A71-1 (B) - 3D-5 Always Below 1 Ω
      A71-2 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      FOR LH

      Tester Connection Condition Specified Condition
      A67-1 (B) - Body ground Always 10 kΩ or higher
      FOR RH

      Tester Connection Condition Specified Condition
      A71-1 (B) - Body ground Always 10 kΩ or higher

      Result

      Result Proceed to
      NG A
      OK B

    Result:  A

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  B

    B 

    See step  7

  4. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the U13*1 or U12*2 rear combination light assembly connector.
      • *1: for LH
      • *2: for RH
    2. Disconnect the 3C instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      FOR LH

      Tester Connection Condition Specified Condition
      U13-5 (TRN) - 3C-22 Always Below 1 Ω
      U13-6 (E) - Body ground Always Below 1 Ω
      FOR RH

      Tester Connection Condition Specified Condition
      U12-5 (TRN) - 3C-19 Always Below 1 Ω
      U12-6 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      FOR LH

      Tester Connection Condition Specified Condition
      U13-5 (TRN) - Body ground Always 10 kΩ or higher
      FOR RH

      Tester Connection Condition Specified Condition
      U12-5 (TRN) - Body ground Always 10 kΩ or higher

      Result

      Result Proceed to
      NG A
      OK B

    Result:  A

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  B

    B 

    See step  7

  5. CHECK HARNESS AND CONNECTOR (SIDE TURN SIGNAL LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the M6*1 or L7*2 side turn signal light assembly connector.
      • *1: for LH
      • *2: for RH
    2. Disconnect the 3A or 3B instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      FOR LH

      Tester Connection Condition Specified Condition
      M6-16 (B) - 3A-40 Always Below 1 Ω
      M6-12 (-) - Body ground Always Below 1 Ω
      FOR RH

      Tester Connection Condition Specified Condition
      L7-16 (B) - 3B-32 Always Below 1 Ω
      L7-12 (-) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      FOR LH

      Tester Connection Condition Specified Condition
      M6-16 (B) - Body ground Always 10 kΩ or higher
      FOR RH

      Tester Connection Condition Specified Condition
      L7-16 (B) - Body ground Always 10 kΩ or higher

      Result

      Result Proceed to
      NG A
      OK B

    Result:  A

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  B

    B 

    See step  7

  6. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the M9*1 or L10*2 outer mirror control ECU assembly connector.
      • *1: for LH
      • *2: for RH
    2. Disconnect the 3A or 3B instrument panel junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      FOR LH

      Tester Connection Condition Specified Condition
      M9-11 (TRNI) - 3A-40 Always Below 1 Ω
      M9-7 (GND) - Body ground Always Below 1 Ω
      FOR RH

      Tester Connection Condition Specified Condition
      L10-11 (TRNI) - 3B-32 Always Below 1 Ω
      L10-7 (GND) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      FOR LH

      Tester Connection Condition Specified Condition
      M9-11 (TRNI) - Body ground Always 10 kΩ or higher
      FOR RH

      Tester Connection Condition Specified Condition
      L10-11 (TRNI) - Body ground Always 10 kΩ or higher

      Result

      Result Proceed to
      NG A
      OK B

    Result:  A

    A 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  B

    B 

    See step  7

  7. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL [07/2015 - ]
      GTY625990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Instrument Panel Junction Block Assembly)      		 - -
    2. Front turn signal light
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        for LH 

        Tester Connection Condition Specified Condition
        3A-20 - 3D-10 Always Below 1 Ω

        for RH 

        Tester Connection Condition Specified Condition
        3A-37 - 3D-5 Always Below 1 Ω

        Result

        Result Proceed to
        NG A
        OK B
    3. Rear turn signal light
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        for LH 

        Tester Connection Condition Specified Condition
        3A-20 - 3C-22 Always Below 1 Ω

        for RH 

        Tester Connection Condition Specified Condition
        3A-37 - 3C-19 Always Below 1 Ω

        Result

        Result Proceed to
        NG A
        OK B
    4. Side turn signal light
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        for LH 

        Tester Connection Condition Specified Condition
        3A-20 - 3A-40 Always Below 1 Ω

        for RH 

        Tester Connection Condition Specified Condition
        3A-37 - 3B-32 Always Below 1 Ω

        Result

        Result Proceed to
        NG A
        OK (w/o Reverse Shift-linked Mirror) B
        OK (for LH with Reverse Shift-linked Mirror) C
        OK (for RH with Reverse Shift-linked Mirror) D

    Result:  A

    A 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    Refer to REMOVAL [07/2015 - ]

    Result:  B

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [07/2015 - ]

    Result:  D

    D 

    See step  9

    Result:  C

    C 

    See step  8

  8. 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 [07/2015 - ]
    2. Recheck for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]

      Result

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

    Result:  A

    A 

    END 

    Result:  B

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [07/2015 - ]

  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 [07/2015 - ]
    2. Recheck for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]

      Result

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

    Result:  A

    A 

    END 

    Result:  B

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [07/2015 - ]

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