Wiper Motor: Testing and Inspection
Wiper Motor Test1. Carefully remove the windshield wiper arms.
2. Disconnect the 5P connector (A) from the wiper motor (B).
3. Test the motor by connecting battery power to the No.4 terminal and ground the No.2 terminal of the wiper motor 5P connector. The motor should run at low speed. If the motor does not run or fails to run smoothly, replace the motor.
4. Connect an analog voltmeter between the No.5 (+) and No.3 (-) terminals, and run the motor at low or high speed. The voltmeter should indicate 12 V and 4V or less alternately.