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Rear Wiper Operates Constantly With Ignition On

  1. Turn ignition off. Disconnect right multifunction switch connector. See Figure. Disconnect rear wiper motor connector. See Figure. Turn ignition on. Using DVOM, measure voltage between ground and rear wiper motor connector terminal No. 2 (Brown/Light Green wire). See Figure. If no voltage is present, go to next step. If any voltage is present, repair short to voltage in Brown/Light Green wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  2. Using DVOM, measure voltage between ground and rear wiper motor connector terminal No. 4 (Brown/Yellow wire). If no voltage is present, go to next step. If any voltage is present, repair short to voltage in Brown/Yellow wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  3. Connect right multifunction switch connector. Turn ignition on. Ensure rear wiper switch is in OFF position. Using DVOM, backprobe and measure voltage between ground and rear wiper motor connector terminal No. 6 (Brown/Yellow wire). If voltage is less than 0.2 volt, go to next step. If voltage is greater than 0.2 volt, replace right multifunction switch. See appropriate STEERING COLUMN SWITCHES article. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  4. Using DVOM, backprobe right multifunction switch connector. Using DVOM, measure voltage between ground and rear wiper motor connector terminal No. 5 (Brown/Light Green wire). If voltage is less than 0.2 volt, go to next step. If voltage is greater than 0.2 volt, replace right multifunction switch. See appropriate STEERING COLUMN SWITCHES article. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  5. Replace rear wiper motor. See appropriate WIPER/WASHER SYSTEMS article. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
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