A/C Clutch Relay

The A/C clutch relay is located in the Power Distribution Center (PDC). See Figure or Figure . PDC is located in engine compartment. See Figure or Figure . The Powertrain Control Module (PCM) controls cycling of A/C compressor clutch by controlling ground circuit on A/C clutch relay. A/C clutch relay receives constant battery voltage at one side of relay from fuse No. 22 (Neon) or fuse No. 11 (PT Cruiser) in PDC. When ignition is on, the A/C clutch relay receives voltage at the other side of the relay from ignition switch.

The PCM controls the ground circuit for A/C clutch relay. When ignition is on, PCM completes ground circuit for A/C clutch relay and A/C clutch relay provides voltage to A/C compressor clutch. When PCM senses low idle speed or full throttle, PCM opens the ground circuit and A/C clutch relays opens, shutting off A/C compressor clutch.