Wipers Do Not Operate In Any Mode
- Turn wiper switch to OFF position. 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 WIPER fuse. If WIPER fuse is okay, check for open circuit between fuse and wiper switch. If circuit is okay, check for open Dark Green wire between wiper switch and wiper motor. If Dark Green wire is okay, replace wiper switch.
- Disconnect 3-pin connector from wiper motor. Connect test light between battery voltage and Black wire terminal of wiper motor 3-pin connector. If test light is off, repair open Black wire. If test light is on, 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 wiper motor 3-pin and 6-pin 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.