1993 Cadillac Eldorado Owner's Manual - Page 158

Electronic Climate Control (ECC) Your vehicle has strategicaly placed clectronic sensors, thatfeed information to the vehicle's computer systems. Your vehiclecan control the ventilation, heating, and air conditioningautomatically 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 airwill flow through your vehicle if you're air moving. The system will try to keep the at the selected temperature, but it might not 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. You can change it from Celsius to Fahrenheit by pushing the ENG/MET(English/Metric) button. 144