1994 Cadillac Seville Owner's Manual - Page 167

Electronic Climate Control(ECC) Your vehicle has strategically placed electronic sensors, that feed information to thevehicle's computer systems. Your vehicle can control the ventilation, heating, and air conditioning automatically year round. The outside temperature, inside temperature setting, fan speeds, and the ECC selection are displayed on a digital screen. OFF: Nothing is on, but air will flowthrough your vehicleif you're moving. The system will try keep the air at the selected temperature, to but it mightnot be able to maintain it if it's hot, or cold, outside. "OUTSIDE" Temperature: The outside temperature is always displayed when your vehicle is running. can change it from Celsius You to Fahrenheit by pushing the ENG/MET(English/Metric)button.