LIGHTING SYSTEM Front Fog Light Circuit

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the intelligent tester on.

   4. Enter the following menus: Body / 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.)

   
   

   NG

   CHECK OPERATION (TAILLIGHTS) Click here

   OK

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

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. 

      Text in Illustration

      *1	Component without harness connected (Instrument Panel Junction Block Assembly)

      Remove the instrument panel junction block assembly.

   2. Connect a positive (+) lead from the battery to terminal 2K-1.

   3. Connect a negative (-) lead from the battery to terminals A-14 (TRLY) and A-13 (FFGO).

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

      Standard Voltage
      Tester Connection Condition Specified Condition 2F-9 - Battery negative Always 11 to 14 V 2F-10 - Battery negative Always 11 to 14 V

   
   

   NG

   REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

   OK

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