LIGHTING SYSTEM Daytime Running Light Relay Circuit

DESCRIPTION

The main body ECU controls the DRL relay.

WIRING DIAGRAM

A01V22DE01
*a from Auxiliary Battery
*b to Daytime Running Lights
*c Main Body ECU

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


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, perform the Active Test.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Daytime Running Light Running light relay OFF or ON -
      OK
      Daytime running lights illuminate.

    OK

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

    NG

  2. INSPECT RUNNING LIGHT RELAY (DRL RELAY)


    1. Inspect the running light relay (DRL relay) Click here.


    NG

    REPLACE RUNNING LIGHT RELAY (DRL RELAY)

    OK

  3. CHECK HARNESS AND CONNECTOR (RUNNING LIGHT RELAY - AUXILIARY BATTERY)


    1. A01UZYQE01
      Text in Illustration
      *1 No. 2 Engine Room Relay Block
      *2 Running Light Relay (DRL Relay) Holder

      Remove the running light relay (DRL relay) from the No. 2 engine room relay block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1 - Body ground Always 11 to 14 V
      3 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (RUNNING LIGHT RELAY - MAIN BODY ECU)


    1. Remove the running light relay (DRL relay) from the No. 2 engine room relay block.

    2. Disconnect the F57 main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Relay terminal 2 - F57-15 (DRLE) Always Below 1 Ω
      Relay terminal 2 - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR