Power Window System Symptom Diagnosis
Precautions: Precautions for Working on Glass · Precautions for Working on Power Window · Precautions for Body, Cab and Accessories · General safety (00)
| Condition | Possible Cause | Action |
|---|---|---|
|
All power windows cannot operate
|
Blown fuse
|
Replace fuse and check for short circuit.
|
|
Faulty wiring or ground
|
Repair wiring.
|
|
|
Faulty power window main switch
|
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|
One of the power window cannot operate
|
Faulty wiring or ground
|
Repair wiring.
|
|
Faulty power window regulator and/or motor
|
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|
Faulty power window main switch
|
||
|
Faulty power window sub switch
|
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|
Window lock switch is pushed (lock position)
|
Turn off window lock switch.
|
|
|
Auto-up / auto-down function does not operate
|
Setting malfunction (fail-safe mode)
|
Power window system initialization / reset.
|
|
Faulty power window main switch
|
||
|
Abnormal noise
|
Loose window regulator mounting bolts
|
Tighten window regulator mounting bolts.
•Front:
•Rear: |
|
Worn or broken power window regulator sliding and rotating parts
|
Replace window regulator.
•Front:
•Rear: |
|
|
Lack of grease in window regulator assembly
|
Lubricate.
•Front:
•Rear: |