Compressor Control Relay

A/C COMPRESSOR CONTROL RELAY
The A/C compressor control relay cycles the compressor on and off by energizing and de-energizing the compressor clutch coil.

With the ignition key on, a current of 12 volts is applied to the relay common contact and one coil terminal. The PCM grounds the second coil terminal under the following conditions:
^ When the driver selects A/C mode
^ When the driver selects defrost mode
^ When all other requirements are met

When the relay is energized, current passes through the relay contacts. This action energizes the compressor clutch coil.