Apply voltage from the positive battery terminal to terminal E or D; connect terminal B to body ground, check the operation of the windshield wiper motor as shown in table.
Disconnect the positive battery terminal from the E motor terminal with the windshield wipers running.
Make sure the wipers do not stop in their original position.
Connect terminals A and D of the motor and connect terminal C to the positive terminal of the battery.
Pic. 7.56. Wiper Motor Test Diagram
Make sure the wipers run at low speed again, then stop at their original position (pic. 7.56).
If not, replace the windshield wiper motor.