A/C Compressor Control Module Description

The Air Conditioning (A/C) compressor control module controls the operation of the compressor clutch in response to the signals received from the following components:
^ The A/C ON/OFF switch
^ The A/C refrigerant pressure switch
^ The refrigerant (evaporator) temperature sensor
^ The Powertrain Control Module (PCM) With the A/C system in operation the A/C compressor control module performs the following functions:
^ 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
^ De-energizes the compressor clutch in response to the following conditions:
- 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 low evaporator temperature signal from the refrigerant (evaporator) temperature sensor
- A high engine demand signal from the PCM
- An A/C system OFF request