LIGHTING SYSTEM Front Fog Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the front fog light relay.

WIRING DIAGRAM

B005ZSYE03

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 power switch on (IG).

    3. Turn the GTS on.

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

    5. Check that the relay operates.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Front Fog Light Relay Front fog light relay ON/OFF Light control switch is in tail position
      OK
      Front fog light relay operates. (Front fog lights come on.)

    OK

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

    NG

  2. CHECK OPERATION (TAILLIGHTS)


    1. Check the operation of the taillights.

      OK
      Taillights operate normally.

    NG

    GO TO PROBLEM SYMPTOMS TABLE Click here

    OK

  3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. B005ZIFE04
      Text in Illustration
      *A for LHD
      *B for RHD
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      Remove the instrument panel junction block assembly Click here.

    2. Connect a positive (+) lead from the auxiliary battery to terminal 2E-1*1 or 2F-1*2.

    3. Connect a negative (-) lead from the auxiliary battery to terminals MB-14 and MB-13.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2C-8 - Auxiliary battery negative terminal Power switch off 11 to 14 V

      • *1: for LHD

      • *2: for RHD


    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FOG LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK AND BODY GROUND)


    1. Disconnect the 2C instrument panel junction block assembly connector.

    2. Disconnect the C4 fog light assembly LH connector.

    3. Disconnect the C6 fog light assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C4-2 - 2C-8 Always Below 1 Ω
      C6-2 - 2C-8 Always Below 1 Ω
      2C-8 - Body ground Always 10 kΩ or higher
      C4-1 - Body ground Always Below 1 Ω
      C6-1 - Body ground Always Below 1 Ω

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR