Wipers Do Not Operate In Any Mode
- Disconnect wiper switch connector. Turn ignition switch to RUN position. Connect test light between chassis ground and Yellow wire terminal of wiper switch connector. If test light does not come on, replace fuse and/or repair open wire.
- If test light is on, disconnect 3-pin connector from wiper motor. Connect test light between battery voltage and Black wire terminal of 3-pin connector. If test light does not come on, repair open Black wire.
- If test light is on, reconnect wiper switch connector. Disconnect 6-pin connector from wiper motor. Connect test light between chassis ground and Dark Green wire terminal of wiper motor 6-pin connector. If test light is on, go to next step. If test light is off, check for open Dark Green wire. If Dark Green wire is okay, replace wiper switch.
- Turn wiper switch to LO position. Connect test light between chassis ground and Gray wire terminal of wiper motor 6-pin connector. If test light is on, go to next step. If test light is off, check for open Gray wire. If Gray wire is okay, replace wiper switch.
- Check for continuity in Yellow wire between 3-pin and 6-pin wiper motor connectors. If there is no continuity, repair open Yellow wire. If there is continuity, check for poor wiring connection at wiper motor. If connection is okay, replace wiper motor cover (circuit board). See Fig 1
and Fig 2
. If problem still exists, replace wiper motor.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.