A/C Compressor Control Module Description

The A/C compressor control module controls the operation of the compressor clutch in response to signals received from the following:
^ The A/C ON/OFF switch
^ The A/C refrigerant pressure switch
^ The Powertrain Control Module (PCM)

With the air conditioning system in operation, the A/C compressor control module performs the following functions:
^ Energizes the compressor clutch in response to the following:
- An A/C system ON request
- The determination of favorable system conditions for air conditioning operation.
^ De-energizes the compressor clutch in response to the following:
- An A/C system OFF request
- A high refrigerant pressure signal (from the A/C refrigerant pressure switch)
- A low refrigerant pressure signal (from the A/C refrigerant pressure switch)
- A high engine demand signal (from the PCM).