Wiper Motor: Testing and Inspection

Check current draw of windshield wiper motor.
^ Switch off the ignition.
^ Disconnect the connector.
^ Connect a fused jumper wire from the battery positive terminal to the positive terminal of the ammeter.
^ Connect a jumper wire from the battery ground terminal to the wiper motor housing.
^ Connect the ammeter negative terminal to wiper motor connector pin 5. As the wiper motor operates at fast speed, take a current input reading from the ammeter. The required value is 4 A maximum.
^ Disconnect the wiper motor connector pin 5 from the ammeter negative terminal.
^ Connect the wiper motor connector pin 4 to the ammeter negative terminal. As the wiper motor operates at slow speed, take a current input reading from the ammeter. The required value is 2 A maximum.

CAUTION: The magnets in the wiper motor can be damaged if it is dropped or knocked.

NOTE: The measuring range on the ammeter should be at least 6 A.







Check park position switch ON position.
^ Measure the resistance between wiper motor connector pin 2 and pin 1.
- If the resistance is less than 5 ohms, proceed to the next step.
- If the resistance is greater than 5 ohms, INSTALL a new wiper motor.

NOTE: The wiper motor must not be in park position.







Check park position switch OFF position.
^ Measure the resistance between wiper motor connector pin 1 and pin 3.
- If the resistance is greater than 10,000 ohms the wiper motor is OK.
- If the resistance is less than 10,000 ohms, INSTALL a new wiper motor.