The A/C clutch relay is a crucial component that transmits power from the interior A/C controls to the A/C compressor, activating the compressor clutch.
A/C clutch relay principleThe A/C clutch relay acts like a switch and is a vital part of the compressor and the clutch because it controls the flow of power supply to these sections. The relay can be found installed on the firewall but in a standard A/C control installation, there is a three-wire connection. Without the proper working relay, it would be almost impossible for the compressor to work correctly and the AC will not produce cool air.
Common issues with a faulty AC clutch relayA faulty AC clutch relay can cause the vehicle to not produce cool air, inconsistent cooling, or the compressor may not function at all.