Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Wiper Motor: Testing and Inspection
Troubleshooting
Fig. 17 Connections To Operate Compound Wound Round Wiper Motor Independent Of Vehicle Wiring
Refer to Fig. 17, to operate motor independent of vehicle wiring.
WIPER INOPERATIVE OR INTERMITTENT
1.
Open lead wire from wiper terminal No. 1 to wiper switch.
2.
Wiper switch not securely mounted.
3.
Wiper switch defective.
4.
Defective gearbox relay.
5.
Defective pulse relay or timer, if equipped.
6.
Open motor ground.
7.
Open series field, armature or circuit breaker.
8.
Sticking or damaged motor brushes.
9.
Poor connections at gearbox relay.
10.
Binding relay switch latch arm.
MOTOR WILL NOT SHUTOFF
Crank Arm Rotates 360°
1.
Grounded wire between terminal 1 on gearbox relay and wiper switch.
2.
Corroded terminals at switch or motor.
3.
Defective wiper switch.
4.
Grounded gearbox relay coil.
5.
Gearbox relay latch arm binding, or spring missing.
6.
Defective washer pump relay or override switch.
7.
Loose or defective pulse timer, if equipped.
Crank Arm Moves In & Out of Park Position
1.
Open wire between gearbox relay terminal 3 and wiper switch.
2.
Defective wiper switch.
3.
Defective gearbox relay.
4.
Drive pawl spring disconnected.
5.
Open shunt field.
MOTOR OPERATES AT HIGH SPEED ONLY
1.
Open wire between gearbox relay terminal 3 and wiper switch.
2.
Defective wiper switch.
3.
Open shunt field, or open wire between gearbox relay and shunt field.
MOTOR OPERATES AT LOW SPEED ONLY (OPERATES PROPERLY IN DELAY & SHUTS OFF PROPERLY)
1.
Grounded wire between gearbox relay terminal 3 and wiper switch.
