Wiper Motor Runs When Ignition Switch Is On & Wiper Switch Is Turned Off
- Check wiper motor wiring harness for short between voltage and low speed motor feed terminal No. 2 (Brown/White wire) or high speed motor feed terminal No. 1 (Red/Yellow wire). See WIRING DIAGRAMS . If either circuit is shorted to voltage, repair as necessary. If neither circuit is shorted to voltage, go to next step.
- Check for faulty wiper intermittent or HIGH/LOW wiper relay. See Figure . If either relay is faulty, replace appropriate relay. If relays are okay, go to next step.
- Check Dark Green wire between intermittent wiper relay cavity "B" and HIGH/LOW wiper relay cavity "B" for short to voltage. If Dark Green wire is shorted to voltage, repair as necessary. If circuit is not shorted to voltage, go to next step.
- Turn ignition off. Disconnect Body Control Module (BCM) White connector C3. Check continuity of Red/Violet wire between ground and BCM connector C3 terminal No. 4. See Figure . If continuity exists, repair short to ground in Red/Violet wire. If continuity does not exist, go to next step.
- Check continuity of Red/Violet wire between BCM connector C3 terminal No. 4 and intermittent wiper relay connector terminal "C". If continuity does not exist, repair open in Red/Violet wire. If continuity exists, go to next step.
- Disconnect BCM Black connector C2. Turn ignition on. Measure voltage at BCM connector C2 terminal No. 8 (Dark Green/Red wire). If voltage is zero volts, replace BCM. See BODY CONTROL MODULE under REMOVAL & INSTALLATION. If voltage is 10-15 volts, check Dark Green/Red wire for short to voltage. If voltage is more than zero volts, but less than 10 volts, check wiper/washer switch and wiring. See WIPER/WASHER SWITCH under COMPONENT TESTS.