Wiper and Washer Systems: Testing and Inspection

Poor Wiping Action
1. Defective blade(s).
2. Distorted wiper link, or worn joint.

Sluggish Wiping Action
1. Poor ground or connections.
2. Resistance increased due to twisting of link. Check operation of link motor disconnected.
3. Defective motor.

Wiper Circuit Inoperative
1. Blown fuse.
2. Poorly connected or broken wiring.
3. Defective switch.
4. Defective motor.

Motor Continues To Run With Switch Off
1. Cam plate insulator defective. Motor continues to operate when switch leads are disconnected at connector.
2. Defective switch.

Motor Stops Immediately When Switch Is Turned Off
1. Self parking points defective.
2. Defective switch.