Figure 2 TROUBLESHOOTING BASIC WINDSHIELD WIPER PROBLEMS

Most windshield wiper problems are traced to the motor, but there are a few areas to eliminate before assuming the motor is bad.

TROUBLESHOOTING ELECTRIC WIPERS

The Problem Is Caused By What to Do

Wipers do not operate-
Wiper motor heats up or hums
Internal motor defect
Bent or damaged linkage
Arms improperly installed on linkage pivots
Have motor serviced
Repair or replace linkage
Position linkage in park and reinstall wiper arms

Wipers do not operate-
No current to motor
Fuse or circuit breaker blown
Loose, open or broken wiring
Defective switch
Defective or corroded terminals
No ground circuit for motor or switch
Replace fuse or circuit breaker
Repair wiring and connections
Replace switch
Repair or clean terminals
Repair ground circuits

Wipers do not operate-
Motor runs
Linkage disconnected or broken Connect wiper linkage or replace broken linkage

Figure 2 TROUBLESHOOTING BASIC WINDSHIELD WIPER PROBLEMS