For 1990-2009 cars

## Automatic Air Conditioning (A/C) System Description C68

The automatic A/C system (C68) consists of the following components:

• | A heater

• | A ventilation system

• | An air conditioning system

This system is controlled by electronic circuits and by vacuum circuits. These circuits determine the following locations:

• | The air intake locations

• | The discharge locations

The electronic circuits also control the following items:

• | The mode

• | The A/C compressor clutch operation

• | The blower fan operation

• | The discharge air temperature

The driver may select the following options from the system control panel:

• | A desired interior temperature

• | The blower fan speed

• | The mode of operation

In the automatic mode of operation, the system determines the following settings:

• | The appropriate air intake locations

• | The discharge locations

• | The blower fan speed

• | The discharge air temperature

These settings depend on the temperature and information that is selected by the driver. This information is provided by the system's network of sensors.

The automatic A/C system utilizes a variable displacement orifice tube (VDOT) type of refrigeration system. Refer to Refrigeration System Description .