LIGHTING SYSTEM Clearance Light/Daytime Running Light Circuit

DESCRIPTION

Clearance light function:

• When the main body ECU (multiplex network body ECU) receives the light control switch position signal, it sends an illumination request signal to the headlight ECU sub-assembly and illuminates the clearance lights.

Daytime running light function:

• When the operation conditions of the daytime running lights are met, the main body ECU (multiplex network body ECU) sends an illumination request signal to the headlight ECU sub-assembly and illuminates the daytime running lights.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK LIGHTS

   
   

   1. Check the illumination of each clearance lights and daytime running lights.

      Result
      Result Proceed to LH side clearance light and daytime running light does not illuminate. A RH side clearance light and daytime running light does not illuminate. B

   
   

   B

   PERFORM ACTIVE TEST USING GTS Click here

   A

2. PERFORM ACTIVE TEST USING GTS

   
   

   1. Using the GTS, perform the Active Test.

      Click here

      
      Body Electrical > AFS > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Clearance Light	Clearance lights	OFF or ON	-
      Daytime Running Light	Daytime running lights	OFF or ON	-

      
      Body Electrical > AFS > Active Test

      Tester Display
      Clearance Light

      
      Body Electrical > AFS > Active Test

      Tester Display
      Daytime Running Light

      OK
      Clearance lights and daytime running lights illuminate.

      Result
      Procced to OK NG

   
   

   OK

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

   NG

3. CHECK HEADLIGHT UNIT ASSEMBLY LH

   
   

   1. Interchange the headlight unit assembly LH with RH and connect the connectors to them.

      Click here

   2. Check that the clearance light and daytime running light operate normally.

      Click here

      Result
      Result Proceed to LH side clearance light and daytime running light does not illuminate. A RH side clearance light and daytime running light does not illuminate. B

   
   

   A

   REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

   B

4. CHECK NO. 1 HEADLIGHT CLEARANCE LED UNIT LH

   
   

   1. Replace the No. 1 headlight clearance LED unit LH with new one.

      Click here

   2. Using the GTS, perform the Active Test.

      Click here

      
      Body Electrical > AFS > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Clearance Light	Clearance lights	OFF or ON	-
      Daytime Running Light	Daytime running lights	OFF or ON	-

      
      Body Electrical > AFS > Active Test

      Tester Display
      Clearance Light

      
      Body Electrical > AFS > Active Test

      Tester Display
      Daytime Running Light

      OK
      Clearance lights and daytime running lights illuminate.

      Result
      Procced to OK NG

   
   

   OK

   END (NO. 1 HEADLIGHT CLEARANCE LED UNIT LH WAS DEFECTIVE)

   NG

   REPLACE HEADLIGHT HOUSING SUB-ASSEMBLY LH (WIRE HARNESS AND LED ECU) Click here

5. PERFORM ACTIVE TEST USING GTS

   
   

   1. Using the GTS, perform the Active Test.

      Click here

      
      Body Electrical > AFS (Sub) > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Clearance Light	Clearance lights	OFF or ON	-
      Daytime Running Light	Daytime running lights	OFF or ON	-

      
      Body Electrical > AFS (Sub) > Active Test

      Tester Display
      Clearance Light

      
      Body Electrical > AFS (Sub) > Active Test

      Tester Display
      Daytime Running Light

      OK
      Clearance lights and daytime running lights illuminate.

      Result
      Procced to OK NG

   
   

   OK

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

   NG

6. CHECK HEADLIGHT UNIT ASSEMBLY RH

   
   

   1. Interchange the headlight unit assembly RH with LH and connect the connectors to them.

      Click here

   2. Check that the clearance light and daytime running light operate normally.

      Click here

      Result
      Result Proceed to RH side clearance light and daytime running light does not illuminate. A LH side clearance light and daytime running light does not illuminate. B

   
   

   A

   REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

   B

7. CHECK NO. 1 HEADLIGHT CLEARANCE LED UNIT RH

   
   

   1. Replace the No. 1 headlight clearance LED unit RH with new one.

      Click here

   2. Using the GTS, perform the Active Test.

      Click here

      
      Body Electrical > AFS (Sub) > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Clearance Light	Clearance lights	OFF or ON	-
      Daytime Running Light	Daytime running lights	OFF or ON	-

      
      Body Electrical > AFS (Sub) > Active Test

      Tester Display
      Clearance Light

      
      Body Electrical > AFS (Sub) > Active Test

      Tester Display
      Daytime Running Light

      OK
      Clearance lights and daytime running lights illuminate.

      Result
      Procced to OK NG

   
   

   OK

   END (NO. 1 HEADLIGHT CLEARANCE LED UNIT RH WAS DEFECTIVE)

   NG

   REPLACE HEADLIGHT HOUSING SUB-ASSEMBLY RH (WIRE HARNESS AND LED ECU) Click here