2. Disconnect the 4-pin connector from the rear window wiper motor.
3. Apply voltage from the battery to terminals No.1 (+) and No.3 (-) and check whether the electric motor rotates smoothly without abnormal sounds.
If an abnormal sound is heard or the electric motor does not rotate smoothly, replace the electric motor.
4. Rotate the electric motor under the conditions of point 3 and check if there is a voltage of approx. 0-4V between contacts No.4 (+) and No.2 (-).
The measurement is carried out using an analog tester (measurement range 0-15V).
Original article on the website hondabook.ru