FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Wiper Runs All the Time With Ignition On

Test 1 - 3:




Test 4 - 6:




SYMPTOM
WIPER,RUNS ALL THE TIME WITH IGNITION ON

POSSIBLE CAUSES
- BCM defective - ON/OFF driver low
- Wiper ON/OFF relay defective, normally open contacts shorted
- Common circuit shorted to voltage
- High speed output circuit shorted to voltage
- Low speed output circuit shorted to voltage
- Wiper ON/OFF relay control circuit shorted to ground