Wipers Do Not Operate In Any Mode Test: Corvette
- Disconnect wiper/washer switch connector. Connect test light between terminal "B" and ground. Turn ignition switch to RUN position. If test light is on, reconnect wiper/washer connector, and disconnect all 3 connectors at wiper motor module. Go to step 3).
- If test light is off, check for blown wiper fuse or open circuit No. 93 (White wire). If fuse and circuit are okay, check for open wiper fuse feed in circuit No. 4 (Brown wire).
- Connect a test light between C2 terminal "C" and ground. If test light is off, check for open circuit No. 191 (Gray wire). If circuit is okay, replace wiper/washer switch.
- If test light is on, connect test light between C2 terminal "B" and ground. Turn wiper/washer switch to LO position. If test light is on, go to step 5). If test light is off, check for open circuit No. 97 (Light Blue). If circuit is okay, replace wiper/washer switch.
- Reconnect wiper motor module connectors C1 and C2. Leave 2-wire connector C3 disconnected. With wiper/washer switch still in LO position, connect test light between C3 terminal "B" and ground. If test light is on, go to step 6). If test light is off, check for open circuit No. 191 (Gray wire). If circuit is okay, repair or replace wiper motor module.
- Connect test light between C3 terminal "A" and ground. Move wiper/washer switch to HI position. If test light is on, check for open or short to battery voltage in ground circuit No. 150 (Black wire). If okay, repair or replace wiper motor module. If test light is off, check for open circuit No. 92 (Purple wire). If circuit is okay, replace wiper/washer switch.