LIGHTING SYSTEM Daytime Running Light Relay Circuit

DESCRIPTION

The illumination of the daytime running light (clearance light assembly) or clearance light is controlled by the headlight ECU sub-assembly.

WIRING DIAGRAM

B002JV2E03

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

    Click here

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (DAYTIME RUNNING LIGHT)


    1. Using the GTS, perform the Active Test.

      Click here


      1. for Triple Beam Headlight:


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

        Body Electrical > AFS > Active Test
        Tester Display
        Clearance Light

        Body Electrical > AFS > Active Test
        Tester Display
        Daytime Running Light

      2. for Single Beam Headlight:


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

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

        Body Electrical > HL AutoLeveling > Active Test
        Tester Display
        Daytime Running Light
      Result
      Result Proceed to
      The Active Test is performed normally A
      The Active Test is not performed normally for the right side light only B
      The Active Test is not performed normally for the left side light only C

    A

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

    C

    CHECK HARNESS AND CONNECTOR (CLEARANCE LIGHT ASSEMBLY LH - BATTERY AND BODY GROUND) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (CLEARANCE LIGHT ASSEMBLY RH - BATTERY AND BODY GROUND)


    1. B002K9VC03
      *a

      Front view of wire harness connector

      (to Clearance Light Assembly RH)

      Disconnect the clearance light assembly RH connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A31-3 (DRL) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A31-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT SUB-ASSEMBLY RH - CLEARANCE LIGHT ASSEMBLY RH)


    1. Disconnect the A20 headlight ECU sub-assembly RH connector.

    2. Disconnect the A31 clearance light assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A20-8 (RLD2) - A31-4 (DRLC) Always Below 1 Ω
      A20-8 (RLD2) or A31-4 (DRLC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT CLEARANCE LIGHT ASSEMBLY RH


    1. Remove the clearance light assembly RH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

    2. Inspect the clearance light assembly RH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    NG

  5. INSPECT CLEARANCE LIGHT ASSEMBLY RH


    1. B002K47E02
      *1 DRLC

      Remove the clearance light assembly RH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

    2. Remove the clearance light LED unit assembly RH from the clearance light assembly RH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-1 - B-2 (E) Always Below 1 Ω
      A-2 - B-3 (DRL) Always Below 1 Ω
      A-3 - B-4 (DRLC) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY RH for LED Type Side Turn Signal Light: REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY RH Click here
    REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY RH for Bulb Type Slide Turn Signal Light: REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY RH Click here

    NG

    REPLACE CLEARANCE LIGHT ASSEMBLY RH for LED Type Side Turn Signal Light: REPLACE CLEARANCE LIGHT ASSEMBLY RH Click here
    REPLACE CLEARANCE LIGHT ASSEMBLY RH for Bulb Type Slide Turn Signal Light: REPLACE CLEARANCE LIGHT ASSEMBLY RH Click here

  6. CHECK HARNESS AND CONNECTOR (CLEARANCE LIGHT ASSEMBLY LH - BATTERY AND BODY GROUND)


    1. B002K9VC04
      *a

      Front view of wire harness connector

      (to Clearance Light Assembly LH)

      Disconnect the clearance light assembly LH connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A30-3 (DRL) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A30-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU ASSEMBLY LH - CLEARANCE LIGHT ASSEMBLY LH)


    1. Disconnect the A19 headlight ECU sub-assembly LH connector.

    2. Disconnect the A30 clearance light assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A19-8 (RLD2) - A30-4 (DRLC) Always Below 1 Ω
      A19-8 (RLD2) or A30-4 (DRLC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT CLEARANCE LIGHT ASSEMBLY LH


    1. Remove the clearance light assembly LH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

    2. Inspect the clearance light assembly LH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

  9. CHECK CLEARANCE LIGHT ASSEMBLY LH


    1. B002K47E02
      *1 DRLC

      Remove the clearance light assembly RH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

    2. Remove the clearance light LED unit assembly LH from the clearance light assembly LH.

      for LED Type Side Turn Signal Light:

      Click here

      for Bulb Type Slide Turn Signal Light:

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-1 - B-2 (E) Always Below 1 Ω
      A-2 - B-3 (DRL) Always Below 1 Ω
      A-3 - B-4 (DRLC) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY LH for LED Type Side Turn Signal Light: REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY LH Click here
    REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY LH for Bulb Type Slide Turn Signal Light: REPLACE CLEARANCE LIGHT LED UNIT ASSEMBLY LH Click here

    NG

    REPLACE CLEARANCE LIGHT ASSEMBLY LH for LED Type Side Turn Signal Light: REPLACE CLEARANCE LIGHT ASSEMBLY LH Click here
    REPLACE CLEARANCE LIGHT ASSEMBLY LH for Bulb Type Slide Turn Signal Light: REPLACE CLEARANCE LIGHT ASSEMBLY LH Click here