Wipers Operate Intermittently
- Remove wiper fuse and connect an ammeter across fuse block terminals. Turn ignition switch "ON" and operate wiper and washer pump. Observe current draw while glass is wet. If current draw exceeds 3.5 amps., remove wiper arm and blade. Repeat test. If current draw is still high, repair or replace wiper motor. If current draw is okay, install a new wiper blade and recheck operation.
- If current draw was less than 3.5 amps., duplicate condition by operating wiper for approximately 5 minutes while depressing the wash button every 2 minutes. If condition still exists, repair or replace wiper motor. If wiper operates okay, check wiper system wiring for loose connections. Check for loose ground wire from terminal 4 to body metal.