A two-speed windshield wiper will operate in only the low-speed position. Technician A says the common motor brush is worn. Technician B says the Hi-Lo relay may be faulty. Who is correct?

Question

Quizplus · Accepted Answer

Since the wiper operates only in low-speed, it means the motor is working but not receiving signals for high speed. Hence, there might be a problem with the Hi-Lo relay. Technician B is correct. Worn brush will cause reduced power and slow operation in both the high and low-speed modes. Hence, Technician A is not correct.

A Two-Speed Windshield Wiper Will Operate in Only the Low-Speed