Wiper Motor Current Draw Test

CAUTION: Do not handle any windshield wiper motor abusively when diagnosing wiper operations because it will damage the magnets and make the windshield wiper motor inoperative. Rough handling of new replacement windshield wiper motor may also damage the magnets.

Disconnect the windshield wiper mounting arm and pivotshaft from the windshield wiper motor and disconnect the electrical plug to test the windshield wiper motor on the vehicle. Connect the green lead from the test equipment, such as Rotunda Starting and Charging Tester 078-00005 or equivalent, to the battery positive (plus) post. Connect the positive (red) lead from the tester to the common brush terminal. Attach a ground first to the low-speed connection and then to the high-speed connection at the connector plug as shown. In either case, the current draw should not exceed 3.5 amperes.