LIGHTING SYSTEM HI-beam Headlight does not Illuminate

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. PERFORM ACTIVE TEST USING GTS (HEADLIGHT HIGH)

   
   

   1. Using the GTS, perform the Active Test Click here.

      Body No. 5

      Tester Display	Test Part	Control Range
      Head Light High	Headlight high beam illumination	OFF - ON

      OK
      Headlight high condition is switched by Active Test.

   
   

   NG

   REPLACE MULTIPLEX NETWORK FRONT LIGHT ECU

   OK

2. READ VALUE USING GTS (HEADLIGHT DIMMER SWITCH)

   
   

   1. Using the GTS, read the Data List Click here.

      Combination Switch

      Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
      Dimmer Hi Switch	Headlight dimmer switch signal (high position)/ON or OFF	ON: Headlight dimmer switch high position OFF: Headlight dimmer switch OFF	-

      OK
      Condition sign can be displayed.

   
   

   NG

   INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY Click here

   OK

3. CHECK WINDSHIELD WIPER SWITCH

   
   

   1. Temporarily replace the windshield wiper switch with a new or normally functioning one Click here.

   2. Check the high beam headlight operation.

      OK
      High beam headlight operation is normal.

   
   

   OK

   END (WINDSHIELD WIPER SWITCH WAS DEFECTIVE)

   NG

4. CHECK MULTIPLEX NETWORK FRONT LIGHT ECU

   
   

   1. Temporarily replace the multiplex network front light ECU with a new or normally functioning one.

   2. Check the high beam headlight operation.

      OK
      High beam headlight operation is normal.

   
   

   OK

   END (MULTIPLEX NETWORK FRONT LIGHT ECU WAS DEFECTIVE)

   NG

   REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

5. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

   
   

   1. Remove the headlight dimmer switch Click here.

   2. Inspect the headlight dimmer switch Click here.

   
   

   OK

   REPLACE WINDSHIELD WIPER SWITCH Click here

   NG

   REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY Click here