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Home >> Oldsmobile >> 1991 >> Custom Cruiser >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System/Washer System - Liftgate >> Testing >> Test D (Rear Wiper Module - Rear Wiper/Washer Switch)
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Test D (Rear Wiper Module - Rear Wiper/Washer Switch)

  1. Open rear window. If wiper turns off, check for short in wiring from rear window wiper/washer switch to rear window interlock switch. If no short is found, replace rear window wiper/washer switch. See Figure .
  2. If wiper does not turn off, check for short in wiring from interlock switch to wiper motor module. If no short is found, replace wiper motor module.