Washer Will Not Operate Test: Corvette
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 1991 Pontiac Grand Prix, 1991 Pontiac Grand Am, 1991 Pontiac Firebird, 1991 Pontiac Bonneville, and 1991 Pontiac 6000. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect washer pump connector. Turn ignition switch to RUN or ACCESSORY position. Connect test light between terminals "A" and "B" of washer pump connector. Activate washer switch while observing test light. If test light comes on, replace washer pump. If test light stays off, connect test light between terminal "A" and ground. Activate washer switch.
- If test light comes on, repair open ground circuit No. 150 (Black wire), terminal "B" of pump connector. If test light stays off, disconnect wiper motor module connectors C1 and C2. Connect test light between C1 terminal "C" and ground. Activate washer switch. If test light comes on, repair open circuit No. 94 (Pink wire).
- If test light stays off, connect test light between C1 terminal "A" and ground. Activate washer switch. If test light stays off, check for open circuit No. 96 (Brown wire). If circuit is okay, replace wiper/washer switch. If test light comes on, connect test light between C2 terminal "B" and ground.
- Activate washer switch. If test light comes on, repair or replace wiper motor module. If test light stays off, check for open circuit No. 97 (Light Blue wire). If circuit is okay, replace wiper/washer switch.