Wipers Won't Shut Off (Blades Operate In Normal Wipe Pattern)
- If wipers are in delay mode and do not delay between wipes, go to step 3). If wipers delay between wipes, turn ignition on and turn wiper switch to off position. Remove connector from terminals No. 1, 2 and 3.
- Connect 12-volt test light between terminals No. 1 and 2. If test light goes off, go to step 5). If test light stays on, check for grounded wire between wiper switch and terminal No. 1, or defective wiper switch.
- With wiper switch off, turn ignition off and then on. If wipers do not shut off, check if override switch contacts are opened by projection on rim of ratchet gear.
- If contacts are open, check for grounded Blue wire. If contacts close, check for loose timing circuit attaching screw. If okay, adjust contacts or replace timing circuit assembly. See Fig 1
.
- Remove washer pump assembly and check park relay spring. If spring is okay, replace park relay. If wipers shut off and blades park correctly, check holding switch contacts. Adjust contacts as necessary. If okay, replace timing circuit assembly.
Courtesy of GENERAL MOTORS CORP.