LIGHTING SYSTEM Rear Fog Light Circuit

DESCRIPTION

The main body ECU receives a rear fog light switch information signal from the light control switch (rear fog switch), and illuminates the rear fog lights.

WIRING DIAGRAM

A015CYWE01

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Operate the intelligent tester according to the steps on the display and select "Active Test".

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Rear Fog Light Relay Rear fog light ON or OFF -
      OK
      Fog light turns on/turns off.

    NG

    INSPECT FUSE (RR FOG, TAIL) Click here

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT FUSE (RR FOG, TAIL)


    1. Remove the RR FOG fuse and TAIL fuse from the main body ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      RR FOG fuse Always Below 1 Ω
      TAIL fuse

    NG

    REPLACE FUSE

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BODY GROUND)


    1. A015DGJE01

      Disconnect the 2A ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2A-1 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (REAR FOG LIGHT ASSEMBLY - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the 2C ECU connector.

      A015BQ7E01

    2. for LH:


      1. Disconnect the O6 rear fog light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2C-8 (RFGO) - O6-2 Always Below 1 Ω
        O6-1 - Body ground
        O6-2 - Body ground Always 10 kΩ or higher

    3. for RH:


      1. Disconnect the O5 rear fog light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2C-8 (RFGO) - O5-2 Always Below 1 Ω
        O5-1 - Body ground
        O5-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU