Air Conditioning (A/C) Compressor Control Module Description. Chevrolet Metro 2001

For 1990-2009 cars

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