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 light control ECU sub-assembly.

WIRING DIAGRAM

A01MH7RE11

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


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


    1. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > HL AutoLeveling > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Clearance Light Illuminates cornering lights ON or OFF -
      Daytime Running Light Illuminates 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
      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. A01MIBVC07
      *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
      A18-3 (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
      A18-2 (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 LIGHT CONTROL ECU SUB-ASSEMBLY RH - CLEARANCE LIGHT ASSEMBLY RH)


    1. Disconnect the A30 headlight light control ECU sub-assembly RH connector.

    2. Disconnect the A18 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
      A30-8 (RLD2) - A18-4 (DRLC) Always Below 1 Ω
      A30-8 (RLD2) or A18-4 (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.

      Click here

    2. Inspect the clearance light assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH Click here

    NG

    REPLACE CLEARANCE LIGHT ASSEMBLY RH Click here

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


    1. A01MIBVC08
      *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
      A19-3 (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
      A19-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A31 headlight light control ECU sub-assembly LH connector.

    2. Disconnect the A19 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
      A31-8 (RLD2) - A19-4 (DRLC) Always Below 1 Ω
      A31-8 (RLD2) or A19-4 (DRLC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT CLEARANCE LIGHT ASSEMBLY LH


    1. Remove the clearance light assembly LH.

      Click here

    2. Inspect the clearance light assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH Click here

    NG

    REPLACE CLEARANCE LIGHT ASSEMBLY LH Click here