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.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   PERFORM ACTIVE TEST USING INTELLIGENT TESTER

   
   

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

      Table 1. 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.

   
   
   • OKClick here
   • NGClick here
2. Click here

   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

   
   
   • OKClick here
   • NGClick here
3. Click here

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

   
   
   1. 

      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

   
   
   • OKClick here
   • NGClick here
4. Click here

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

   
   
   1. 

      Disconnect the 2C ECU connector.

   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

   
   
   • OKClick here
   • NGClick here
5. Click here

   REPLACE MAIN BODY ECU

6. Click here

   PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLEClick here

7. Click here

   REPLACE FUSE

8. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR