LIGHTING SYSTEM Clearance Light/Daytime Running Light Circuit

DESCRIPTION



WIRING DIAGRAM


  1. for Single Beam Headlight

    B005M0RE13
    *a Daytime Running Light/Clearance Light
    *b No. 1 Headlight Clearance LED Unit
    *c Headlight Unit
    *d Headlight ECU Sub-assembly

  2. for Triple Beam Headlight

    B005M0RE14
    *a Daytime Running Light/Clearance Light
    *b Headlight LED Unit Assembly
    *c Headlight Unit
    *d Headlight ECU Sub-assembly

CAUTION / NOTICE / HINT

Note


  • Before troubleshooting, make sure that the customize setting "DRL Function" is set to "ON".

    Click here

  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Click here

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. for Single Beam Headlight:


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.

      5. Perform the Active Test according to the display on the GTS.


        Body Electrical > HL AutoLeveling > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Clearance Light Clearance lights ON or OFF -
        Daytime Running Light Daytime running lights ON or OFF -

        Body Electrical > HL AutoLeveling > Active Test
        Tester Display
        Clearance Light

        Body Electrical > HL AutoLeveling > Active Test
        Tester Display
        Daytime Running Light
        OK
        Clearance lights and daytime running lights illuminate.

    2. for Triple Beam Headlight:


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / AFS / Active Test.

      5. Perform the Active Test according to the display on the GTS.


        Body Electrical > AFS > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Clearance Light Clearance lights ON or OFF -
        Daytime Running Light Daytime running lights ON or OFF -

        Body Electrical > AFS > Active Test
        Tester Display
        Clearance Light

        Body Electrical > AFS > Active Test
        Tester Display
        Daytime Running Light
        OK
        Clearance lights and daytime running lights illuminate.
      Result
      Result Proceed to
      OK A
      NG (for LH Side) B
      NG (for RH Side) C

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    C

    INSPECT HEADLIGHT UNIT RH Click here

    B

  2. INSPECT HEADLIGHT UNIT LH


    1. Remove the headlight assembly LH.

      for Single Beam Headlight: Click here

      for Triple Beam Headlight: Click here

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

      for Single Beam Headlight: Click here

      for Triple Beam Headlight: Click here

    3. B005OW9C09
      *a

      Component without harness connected

      (to No. 1 Headlight Clearance LED Unit LH)
      *b

      Component without harness connected

      (to Headlight ECU Sub-assembly LH)

      for Single Beam Headlight:


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

        Standard
        Tester Connection Condition Specified Condition
        B-20 - Q-2 Always Below 1 Ω
        B-16 - Q-1 Always Below 1 Ω
        B-11 - Q-3 Always Below 1 Ω
    4. B005OW9C10
      *a

      Component without harness connected

      (to Headlight LED Unit Assembly LH)
      *b

      Component without harness connected

      (to Headlight ECU Sub-assembly LH)

      for Triple Beam Headlight:


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

        Standard
        Tester Connection Condition Specified Condition
        B-20 - Q-2 Always Below 1 Ω
        B-16 - Q-3 Always Below 1 Ω
        B-11 - Q-1 Always Below 1 Ω
      Result
      Result Proceed to
      OK (for Single Beam Headlight) A
      OK (for Triple Beam Headlight) B
      NG C

    B

    REPLACE HEADLIGHT LED UNIT ASSEMBLY LH Click here

    C

    REPLACE HEADLIGHT UNIT LH for Single Beam Headlight: Click here
    REPLACE HEADLIGHT UNIT LH for Triple Beam Headlight: Click here

    A

  3. REPLACE NO. 1 HEADLIGHT CLEARANCE LED UNIT LH


    1. Replace the No. 1 headlight clearance LED unit LH with a new or known good one.

      Click here

    2. Check that the clearance light LH and daytime running light LH operate normally.

      OK
      Clearance light LH and daytime running light LH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (NO. 1 HEADLIGHT CLEARANCE LED UNIT LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

  4. REPLACE HEADLIGHT LED UNIT ASSEMBLY LH


    1. Replace the headlight LED unit assembly LH with a new or known good one.

      Click here

    2. Check that the clearance light LH and daytime running light LH operate normally.

      OK
      Clearance light LH and daytime running light LH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LED UNIT ASSEMBLY LH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

  5. INSPECT HEADLIGHT UNIT RH


    1. Remove the headlight assembly RH.

      for Single Beam Headlight: Click here

      for Triple Beam Headlight: Click here

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

      for Single Beam Headlight: Click here

      for Triple Beam Headlight: Click here

    3. B005OW9C09
      *a

      Component without harness connected

      (to No. 1 Headlight Clearance LED Unit RH)
      *b

      Component without harness connected

      (to Headlight ECU Sub-assembly RH)

      for Single Beam Headlight:


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

        Standard
        Tester Connection Condition Specified Condition
        B-20 - Q-2 Always Below 1 Ω
        B-16 - Q-1 Always Below 1 Ω
        B-11 - Q-3 Always Below 1 Ω
    4. B005OW9C10
      *a

      Front view of wire harness connector

      (to Headlight LED Unit Assembly RH)
      *b

      Front view of wire harness connector

      (to Headlight ECU Sub-assembly RH)

      for Triple Beam Headlight:


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

        Standard
        Tester Connection Condition Specified Condition
        B-20 - Q-2 Always Below 1 Ω
        B-16 - Q-3 Always Below 1 Ω
        B-11 - Q-1 Always Below 1 Ω
      Result
      Result Proceed to
      OK (for Single Beam Headlight) A
      OK (for Triple Beam Headlight) B
      NG C

    B

    REPLACE HEADLIGHT LED UNIT ASSEMBLY RH Click here

    C

    REPLACE HEADLIGHT UNIT RH for Single Beam Headlight: Click here
    REPLACE HEADLIGHT UNIT RH for Triple Beam Headlight: Click here

    A

  6. REPLACE NO. 1 HEADLIGHT CLEARANCE LED UNIT RH


    1. Replace the No. 1 headlight clearance LED unit RH with a new or known good one.

      Click here

    2. Check that the clearance light RH and daytime running light RH operate normally.

      OK
      Clearance light RH and daytime running light RH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (NO. 1 HEADLIGHT CLEARANCE LED UNIT RH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

  7. REPLACE HEADLIGHT LED UNIT ASSEMBLY RH


    1. Replace the headlight LED unit assembly RH with a new or known good one.

      Click here

    2. Check that the clearance light RH and daytime running light RH operate normally.

      OK
      Clearance light RH and daytime running light RH operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (HEADLIGHT LED UNIT ASSEMBLY RH WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here