DESCRIPTION
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
Click here
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.
(d) 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 |
Clearance lights |
ON or OFF |
- |
Daytime Running Light |
Daytime running lights |
ON or OFF |
- |
Tester Display |
---|
Clearance Light |
Tester Display |
---|
Daytime Running Light |
OK:
Clearance lights and daytime running lights illuminate.
Result |
Proceed to |
---|---|
OK |
A |
NG (for LH Side) |
B |
NG (for RH Side) |
C |
A | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
C | ![]() |
GO TO STEP 3 |
|
2. |
REPLACE HEADLIGHT UNIT ASSEMBLY LH |
(a) Replace the headlight unit assembly LH with a new or known good one.
(b) Check that the clearance light LH and daytime running light LH operate normally.
OK:
Clearance light LH and daytime running light LH operate normally.
OK | ![]() |
END (HEADLIGHT UNIT ASSEMBLY LH WAS DEFECTIVE) |
NG | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
3. |
REPLACE HEADLIGHT UNIT ASSEMBLY RH |
(a) Replace the headlight unit assembly RH with a new or known good one.
(b) Check that the clearance light RH and daytime running light RH operate normally.
OK:
Clearance light RH and daytime running light RH operate normally.
OK | ![]() |
END (HEADLIGHT UNIT ASSEMBLY RH WAS DEFECTIVE) |
NG | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
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