Toyota Corolla Cross: High Beam Headlight Circuit
DESCRIPTION
The headlight ECU sub-assembly controls the high beam headlights.
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.
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PROCEDURE
| 1. |
PERFORM ACTIVE TEST USING GTS |
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Main Body > Active Test|
Tester Display | Measurement Item |
Type | Diagnostic Note |
|---|---|---|---|
|
High Beam Headlight | High beam headlights |
OFF or ON | - |
|
Tester Display |
|---|
| High Beam Headlight |
OK:
High beam headlights turn on.
|
Result | Proceed to |
|---|---|
|
OK | A |
|
NG (LH side high beam light does not illuminate) |
B |
| NG (RH side high beam light does not illuminate) |
C |
| A |
.gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
| C |
| GO TO STEP 4 |
|
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| 2. |
CHECK HEADLIGHT UNIT ASSEMBLY LH |
(a) Interchange the headlight unit assembly LH with RH and connect the connectors.
Click here
|
| 3. |
CHECK OPERATION (HIGH BEAM HEADLIGHT) |
(a) Check that the high beam headlight operates normally.
OK:
High beam headlight operates normally.
| OK | | REPLACE HEADLIGHT UNIT ASSEMBLY LH |
| NG | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
| 4. |
CHECK HEADLIGHT UNIT ASSEMBLY RH |
(a) Interchange the headlight unit assembly RH with LH and connect the connectors.
Click here
|
| 5. |
CHECK OPERATION (HIGH BEAM HEADLIGHT) |
(a) Check that the high beam headlight operates normally.
OK:
High beam headlight operates normally.
| OK | | REPLACE HEADLIGHT UNIT ASSEMBLY RH |
| NG | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
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Parts Location
PARTS LOCATION ILLUSTRATION
*A w/ Fog Light
*B for Outer Rear View Mirror Type Side Turn Signal Light
*1 HEADLIGHT ASSEMBLY LH
- PARKING LIGHT BULB (for Bulb Type Clearance
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