Wipers Do Not Operate In Any Mode Test: Corvette
- Disconnect wiper/washer switch connector. Connect a test light between wiper/washer switch connector terminal "B" and ground. Turn ignition switch to RUN or ACCY position. If test light is on, reconnect wiper/washer switch 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 connector C2 terminal "C" and ground. If test light is off, check for open in circuit No. 91 (Gray wire). If circuit is okay, replace wiper/washer switch.
- If test light is on, connect test light between connector C2 terminal "B" and ground. Turn wiper/washer switch to LO position. If test light is on, go to next step. If test light is off, check for open in 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 a test light between connector C3 terminal "B" and ground. If test light is on, go to next step. If test light is off, check for open in circuit No. 191 (Brown wire). If circuit is okay, repair or replace wiper motor module.
- Connect a test light between connector 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 in circuit No. 92 (Purple wire). If circuit is okay, replace wiper/washer switch.