Remove the wiper arms.

Remove the cowl cover.

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

Test the motor by connecting battery power to the No. 1 terminal and ground to the No. 2 terminal of the wiper motor 4P connector. The motor should run at low speed.

Test the motor by connecting battery power to the No. 3 terminal and ground to the No. 2 terminal of the wiper motor 4P connector. The motor should run at high speed.

Connect an analog ohmmeter to the No. 4 and No. 2 terminals, and run the motor at low or high speed. The needle of the ohmmeter should pulse.

If the motor does not run or fails to run smoothly, or there is no pulse, replace the motor.