Wiper Motor: Testing and Inspection

WINDSHIELD WIPER MOTOR INSPECTION

CAUTION: Do not handle the wiper motor abusively when diagnosing the wiper operations. Failure to follow this caution may result in damage to the motor magnets and will make the wiper motor inoperative. Rough handling of a new replacement wiper motor may also damage the motor magnets.

To test the wiper motor on-vehicle, disconnect wiper mounting arm and pivot shaft from the motor and disconnect the electrical plug.

1. Disconnect positive battery cable.
2. Disconnect wiper linkage from motor.
3. Disconnect wiper motor electrical connector.
4. Check low speed current draw at terminal (W).
- If current draw is greater than 3.5 amperes, replace the motor. See WINDSHIELD WIPER MOTOR REMOVAL / INSTALLATION.

5. Check high speed current draw at terminal (DL/O).
- If current draw is greater than 5.5 amperes, replace the motor. See WINDSHIELD WIPER MOTOR REMOVAL / INSTALLATION.