During an A/C performance test at 1,500 rpm the compressor will not engage when the A/C switch is moved to the ON position.But if a jumper wire is connected to battery voltage and the compressor connector the clutch engages and operates normally.Technician A says that the A/C switch circuit fuse should be checked.Technician B says that the blower motor relay should be checked.Who is correct? A) Technician A only B) Technician B only C) Both A and B D) Neither A nor B

Question

Quizplus · Accepted Answer

Since the compressor engages when a jumper wire is connected, it indicates that the compressor clutch and wiring are functioning properly. Therefore, the most likely issue is a faulty A/C switch or a blown fuse in the A/C switch circuit. Technician A is correct in suggesting to check the A/C switch circuit fuse. On the other hand, there is no connection between the blower motor relay and the A/C compressor engagement, therefore Technician B's suggestion is irrelevant to the problem described.

During an A/C Performance Test at 1,500 Rpm the Compressor