Parking Light/Daytime Running Light Circuit [10/2018 - ]: 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
   Clearance Light	Parking lights	OFF or ON	-
   Daytime Running Light	Daytime running lights	OFF or ON	-

   Body Electrical > HL AutoLeveling > Active Test 

   Tester Display
   Clearance Light

   Body Electrical > HL AutoLeveling > Active Test 

   Tester Display
   Daytime Running Light

   OK

   Parking lights and daytime running lights illuminate.

   Result

   Result	Proceed to
   OK	A
   NG (Both left and right parking lights and daytime running lights do not illuminate)	B
   NG (LH side parking light and daytime running light does not illuminate)	C
   NG (RH side parking light and daytime running light does not illuminate)	D

Result: 

A 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2018 - 09/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2020 - ] 

Result: 

B 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2018 - 09/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2020 - ] 

Result: 

D 

See step  4

Result: 

C 

See step  2

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

   Refer to DISASSEMBLY [10/2018 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check the operation of the parking lights and daytime running lights.

   OK

   The parking lights and daytime running lights operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [10/2018 - ] 

Result: 

NG 

REPLACE HEADLIGHT UNIT LH. Refer to  DISASSEMBLY [10/2018 - ] 

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

   Refer to DISASSEMBLY [10/2018 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Check the operation of the parking lights and daytime running lights.

   OK

   The parking lights and daytime running lights operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [10/2018 - ] 

Result: 

NG 

REPLACE HEADLIGHT UNIT RH. Refer to  DISASSEMBLY [10/2018 - ]