Rear Defogger and Mirror Heater System Symptom Diagnosis (If Equipped)
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 |
|---|---|---|
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Rear defogger cannot operate
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Faulty system circuits (including relays and fuses)
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Faulty rear defogger switch
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Faulty rear defogger
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Faulty BCM
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All mirror heaters do not operate (if equipped)
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Blown fuse
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Replace fuse and check for short circuit.
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Faulty rear defogger switch
|
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Faulty wiring or ground
|
Repair wiring.
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Faulty BCM
|
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One of the door mirror heaters does not operate (if equipped)
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Faulty mirror heater
|
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Faulty wiring or ground
|
Repair wiring.
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