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 |
Toyota CH-R Service Manual > Electric Parking Brake System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...
Toyota CH-R Service Manual > Automatic Headlight Beam Level Control System: Left Headlight ECU Variation Error (B2456)
DESCRIPTION
This DTC is stored when a headlight ECU sub-assembly LH which is not compatible
with the vehicle has been installed.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
B2456
Left Headligh ...