Electronic Automatic Temperature Control System

WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.

With use of a micro-controller, Electronic Automatic Temperature Control (EATC) system module analyzes input from following major sources:

Temperature Function & Blower Selection (Made By Vehicle Occupants)
In-Vehicle Temperature
Ambient Temperature
Sunload
Vehicle Speed
Engine Coolant Temperature

Using these inputs, micro-controller determines correct conditions for following outputs:

Compressor Clutch Engagement
Blower Speed
Air Temperature Blend Door Position
Panel/Floor Door Position
Panel/Defrost Door Position
Air Inlet Duct Door Position
Outside Temperature Display