Wiper Motor: Testing and Inspection

1. Remove both wiper arms and blades before starting test. Refer to Wiper Arm Replacement for installation.
2. Turn ignition switch OFF, and disconnect both wiper motor connectors.
3. Using two test leads, attach the positive lead to the auxiliary jumper post and the negative lead to body ground.

Wiper Motor Terminals:

4. Test the wiper motor LOW speed, using above leads, attach the positive lead to Pin 6 and the negative lead to Pin 10. The motor should operate in LOW If not OK, replace motor. If OK, go to next step.
5. Test the wiper motor HIGH speed, attach the positive lead to Pin 6 and the negative lead to Pin 9. The motor should operate in HIGH. If not OK, replace motor. If OK, replace control module.

WIPER SWITCH TO MOTOR CONNECTOR TEST
1. Remove both wiper arms before starting test. Refer to Wiper Arm Replacement for installation.
2. Turn ignition switch OFF and disconnect both wiper motor connectors.
3. Using an voltmeter, check the driver/passenger wiper motor connector between terminals 5 and 6 for battery voltage. Turn ignition switch to RUN position and the wiper switch to the position as indicated in the following steps. Start with wiper switch in the OFF position:
a. To check the Low mode:
- Connect an voltmeter between terminals 6 and 10
- Turn wiper switch to the LO position
- Check for battery voltage
If battery voltage, go to step b. If not, repair as necessary.
b. To check the intermittent mode, turn wiper switch to the intermittent position. It may take as long as 20 seconds for voltage to register on the meter. If battery voltage OK, go to step c. If not OK, repair as necessary.
c. To check the washer switch mode, press washer switch. If battery voltage OK, go to step d. If not OK, repair as necessary.
d. To check the High mode, connect the voltmeter between terminals 6 and 9 and check for battery voltage. Turn the wiper switch to the HI position. If battery voltage OK, perform the Wiper Motor Test. If not OK, repair wiring as necessary.
4. If necessary, repeat the above procedure on the other motor wiper motor connector.