Wiper Motor: Testing and Inspection

Wiper Motor Test

Windshield

1. Open the hood, and carefully remove the cap nuts and the wiper arms. Make sure they do not touch the hood.
2. Remove the hood seal and cowl cover.




3. Disconnect the 5P connector (A) from the motor (B).




4. Test the motor by connecting battery power and ground according to the table. If the motor does not run or fails to run smoothly, replace it.
5. Test the wiper motor park switch by connecting an analog voltmeter between the No. 5 (+) terminal and ground, and run the motor at low or high speed. The voltmeter should indicate 12 V and 4 V or less alternately. If it does not, replace the motor.

Rear Window

1. Open the hatch, and remove the hatch trim panel.




2. Disconnect the 4P connector (A) from the motor (B).




3. Test the motor by connecting battery power and ground according to the table. If the motor does not run or fails to run smoothly, replace it.
4. Test the wiper motor park switch by connecting an analog voltmeter between the No. 4 (+) terminal and ground, and run the motor. The voltmeter should indicate 12 V and 4 V or less alternately. If it does not, replace the motor.