LIGHTING SYSTEM Front Fog Light Circuit

DESCRIPTION

The front controller receives fog light switch information from the headlight dimmer switch assembly, and turns on the fog light.

WIRING DIAGRAM

A0160UFE03

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Body No. 5 / Active Test.

    5. Check the operation.

      Body No. 5 (Front Controller)
      Tester Display Test Part Control Range Diagnostic Note
      Front Fog Light Relay Front fog light relay ON/OFF -
      OK
      Fog light illuminates.

    NG

    INSPECT FUSE (FR FOG) Click here

    OK

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

  2. INSPECT FUSE (FR FOG)


    1. Remove the FR FOG fuse from the engine room No. 2 relay block.

    2. Measure the resistance of the fuse.

      Standard Resistance
      Below 1 Ω

    NG

    REPLACE FUSE

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT CONTROLLER - BATTERY)


    1. A015Z25E04

      Disconnect the 2E front controller connector.

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

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT CONTROLLER - FOG LIGHT)


    1. A01609XE16

      Check the wire harness between the front fog light LH and front controller, and the front fog light LH and body ground.


      1. Disconnect the 2G front controller connector.

      2. Disconnect the B13 fog light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2G-7 - B13-2 Always Below 1 Ω
        2G-7 or B13-2 - Body ground Always 10 kΩ or higher
        B13-1- Body ground Always Below 1 Ω
    2. A01609XE15

      Check the wire harness between the front fog light RH and engine room No. 2 relay block, and the front fog light RH and body ground.


      1. Disconnect the 2G front controller connector.

      2. Disconnect the B1 fog light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        2G-6 - B1-2 Always Below 1 Ω
        2G-6 or B1-2 - Body ground Always 10 kΩ or higher
        B1-1- Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT CONTROLLER (MULTIPLEX NETWORK BODY ECU)