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Rear Wiper Switch MUX Input Short To Ground

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. Turn ignition on. Using scan tool, select BODY then BODY CONTROL MODULE and monitor R WIPER SWITCH SENSOR voltage. If voltage is 0.4 volt or less, go to next step. If voltage is greater than 0.4 volt, go to step  6.
  2. Turn ignition off. Disconnect rear wiper switch connector. Rear wiper switch is part of instrument panel switch bank located in center of instrument panel. Turn ignition on. Monitor R WIPER SWITCH SENSOR voltage on scan tool. If voltage is 4.8 volts or less, go to next step. If voltage is greater than 4.8 volts, replace instrument panel switch bank.
  3. Turn ignition off. Locate and disconnect Body Control Module (BCM) connector C5. See COMPONENT LOCATIONS . See Figure. Using DVOM, measure resistance between ground and instrument panel switch bank connector terminal No. 9 (Brown/Dark Blue wire). See Figure. If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short to ground in Brown/Dark Blue wire between instrument panel switch bank and BCM connector terminal No. 28.
  4. Using DVOM, measure resistance between instrument panel switch bank connector terminals No. 9 (Brown/Dark Blue wire) and No. 11 (Violet/White wire). If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short between Brown/Dark Blue and Violet/White wires. See WIPER/WASHER in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  5. Using DVOM, measure resistance between ground and instrument panel switch bank connector terminal No. 11 (Violet/White wire). If resistance is greater than 5 ohms, replace BCM. See BODY CONTROL MODULE  under REMOVAL & INSTALLATION. If resistance is 5 ohms or less, repair short to ground in Violet/White wire between instrument panel switch bank and BCM connector terminal No. 28.
  6. Turn ignition on. Using scan tool, erase Body Control Module (BCM) and Front Control Module (FCM) DTCs. Turn ignition off. Conditions necessary to set this DTC are not present at this time. Check for related Technical Service Bulletins (TSBs). Check for faulty circuits while wiggling connectors and harness. Check for intermittent poor connections or faulty circuits and repair as necessary.
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