High Beam Headlight Circuit [03/2019 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.
5. Perform the Active Test according to the display on the Techstream.

   Body Electrical > HL AutoLeveling > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Headlight High Beam	High beam headlights	OFF or ON	-

   Body Electrical > HL AutoLeveling > Active Test 

   Tester Display
   Headlight High Beam

   OK

   High beam headlights turn on.

   Result

   Result	Proceed to
   OK	A
   NG (LH side high beam headlight does not illuminate)	B
   NG (RH side high beam headlight does not illuminate)	C

Result: 

A 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [03/2019 - 01/2023]  , or refer to  PROBLEM SYMPTOMS TABLE [01/2023 - ] 

Result: 

C 

See step  4

Result: 

B 

See step  2

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

   Refer to DISASSEMBLY [03/2019 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check that the high beam headlights operate normally.

   OK

   High beam headlights operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [03/2019 - ] 

Result: 

NG 

REPLACE HEADLIGHT UNIT ASSEMBLY LH. Refer to  DISASSEMBLY [03/2019 - ] 

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

   Refer to DISASSEMBLY [03/2019 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Check that the high beam headlights operate normally.

   OK

   High beam headlights operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [03/2019 - ] 

Result: 

NG 

REPLACE HEADLIGHT UNIT ASSEMBLY RH. Refer to  DISASSEMBLY [03/2019 - ]