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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Precaution
PRECAUTION PRECAUTION FOR BULB REPLACEMENT (a) Always prepare a new bulb for immediate replacement. While replacing the bulb, the lens may attract dust and moisture if the bulb is removed from the veh
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
SEE MORE:
Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE
1. INSPECT NO. 1 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO. 1)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified Condition
Inspection
INSPECTION PROCEDURE 1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR
CAUTION:
Do not put your hands into the water that has been heated for the inspection.
Touching the heated water could result in burns.
(a) Measure the resistance according to the value(s) in the table below.
