DATC System - Overview

The DATC climate control systems consist of the following components:

• Air Conditioning (A/C) compressor - Externally Controlled Variable Displacement Compressor (EVDC)
• A/C compressor clutch and clutch field coil
• AAT sensor
• Air Conditioning (A/C) pressure transducer
• Blower motor
• Blower motor speed control
• Condenser core on 2.0L/3.5L GTDI equipped vehicles
• Condenser core with integrated receiver drier on 3.7L Ti-VCT equipped vehicles
• Connecting refrigerant lines
• Evaporator core (part of the heater core and evaporator core housing)
• Evaporator temperature sensor (part of the heater core and evaporator core housing)
• FCIM
• FDIM
• Heating Ventilation Air Conditioning (HVAC) control module
• Heater core
• Heater core and evaporator core housing
• In-vehicle temperature and humidity sensor
• Mode door actuator - air inlet
• Mode door actuator - defrost/panel/floor
• Receiver drier on 2.0L/3.5L GTDI equipped vehicles
• Sunload sensor
• LH and RH temperature blend door actuators
• TXV

The DATC system heats or cools the vehicle interior depending on the HVAC control panel selection. The FCIM provides the interface for the vehicle occupants to control the climate control system. When selections are made, the FCIM communicates the selections to the HVAC control module through the vehicle module communication network.

• The driver may override the automatic mode of operation.
• The control panel selection determines heating or cooling, air distribution and enables blower motor operation.
• The temperature control setting determines the outlet air temperature.
• The fan speed control buttons vary the blower motor speed.
• The driver side and passenger side temperature settings can be individually controlled.
• During A/C operation, the system reduces the relative humidity of the air inside the vehicle.

For Auxiliary climate control description and operation, refer to Auxiliary Climate Control