The A/C compressor control module controls the operation of the compressor clutch in response to the signals received from the following components:

1. The A/C ON/OFF switch
2. The A/C refrigerant pressure switch
3. The evaporator temperature sensor
4. The powertrain control module (PCM)

The A/C compressor control module performs the following functions when the air conditioning system is operating:

1. Energizes the compressor clutch in response to the following conditions:

-	An A/C system ON request

-	The determination of favorable system conditions for A/C operation

2. De-energizes the compressor clutch in response to the following conditions:

-	A high refrigerant pressure signal from the refrigerant pressure switch

-	A low refrigerant pressure signal from the A/C refrigerant pressure switch

-	A low evaporator temperature signal from the evaporator temperature sensor

-	A high engine coolant temperature signal from the engine coolant temperature sensor (ECT)

-	A high engine demand signal (WOT) from the PCM

-	An A/C system OFF request