Compressor Clutch Relay: Description and Operation

The A/C clutch control relay enables the A/C clutch when commanded to do so by the Powertrain Control Module (PCM). The A/C clutch could be disabled under the following conditions:
- engine start-up
- Wide Open Throttle (WOT)
- during low engine idle conditions
- excessively high engine temperatures

The A/C clutch control relay is a normal open relay connected in the A/C clutch circuit. When the relay is energized by the powertrain control module, it enables A/C clutch operation.