Climate Control System - Vehicles With: Electronic Automatic Temperature Control (EATC) - Overview

There are 2 EATC systems; Single Zone and Dual Zone. The EATC climate control systems consist of the following components:

• A/C compressor - fixed displacement
• A/C pressure transducer
• AAT sensor
• Blower motor
• Blower motor speed control
• Compressor clutch assembly
• Condenser
• Connecting refrigerant lines
• Door actuator - air inlet
• Door actuator - defrost/floor/panel
• Door actuator - temperature (Single Zone)
• Door actuator - temperature (Dual Zone) driver side and passenger side
• Evaporator core
• Evaporator temperature sensor
• Heater core
• Heater core and evaporator core housing
• HVAC control module
• In-vehicle temperature and humidity sensor
• Receiver drier desiccant bag
• Sunload sensor (Dual Zone)
• Thermostatic Expansion Valve(TXV)

The EATC system heats or cools the vehicle interior depending on the HVAC control panel selection.

• 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 on vehicles with Dual Zone.
• During A/C operation, the system reduces the relative humidity of the air inside the vehicle.