Wipers Run With Switch Off
- Inspect wiper motor and WCM connectors. WCM is located at fuse block. Repair connections as necessary and retest system. If connections are okay, go to next step.
- Unplug wiper motor. Turn wiper switch off. At harness connector, check continuity between Black/Pink wire and Dark Blue/Orange wire terminals, and between Yellow/Red wire and Black wire terminals. If continuity does not exist for either pair of wires, go to next step. If wires are okay, replace wiper motor.
- Check continuity of Black/Pink wire, Yellow/Red wire and Dark Blue/Orange wire between wiper motor and WCM. Check Black wire for continuity to ground. Repair open wire(s) as necessary. If wires are okay, go to next step.
- Disconnect WCM. With wiper switch off, measure resistance between Orange wire and Brown/White wire terminals of WCM connector. If resistance is 45-50 k/ohms, replace WCM. If resistance is not as specified, go to next step.
- Disconnect wiper switch. Measure resistance between Orange wire and Brown/White wire terminals of wiper switch connector. If resistance is 45-50 k/ohms, test wiper switch. See WIPER SWITCH CONTINUITY TEST . If resistance is not as specified, check for open Orange wire or Brown/White wire between wiper switch and WCM.