WIPERS RUN WITH SWITCH IN OFF POSITION Unplug wiper control switch. Turn ignition on. If wipers park, replace wiper control switch. If wipers continue to run, check interval governor and wiper motor. See WIPER MOTOR CURRENT and INTERVAL GOVERNOR TEST under TESTING.
WIPER MOTOR CURRENT 1. Disconnect negative battery cable. Disengage linkage from motor. Unplug wiper connector. Connect Green lead from Starting and Charging System Tester (078-00005) to positive battery post. 2. Connect Red tester lead to low speed connection (White wire on mating connector). Observe ammeter. Connect Red tester lead to high speed connection (Dark Blue/Orange wire on mating connector). Again observe ammeter. See Fig. 2 . Motor current draw should not exceed 3 amps for either measurement.
INTERVAL GOVERNOR TEST If interval operation is not correct, check wiper motor current draw, wiper control switch, and all connecting wires for continuity. If these components and wiring are okay, replace interval governor.
WIPER SWITCH Check for continuity between switch terminals. See Fig. 3 . See WIPER SWITCH CONTINUITY table. To detect marginal operation of switch, move switch lever while making measurements. If continuity or resistance is not as specified, or if continuity is poor in any position, replace switch.
Friday, September 10th, 2010 AT 4:34 PM