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Automatic A/C-Heater Systems: Description

WARNING: To avoid injury from accidental air bag deployment, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG SYSTEM SAFETY article in GENERAL SERVICING.

The Electronic Automatic Temperature Control (EATC) system is a cycling-clutch system which uses a fixed orifice tube to meter the flow of refrigerant. The system includes a self-diagnostic feature that stores fault codes when problems occurs. On vehicles equipped with an auxiliary A/C-heater system, the auxiliary unit is located inside right rear quarter panel.

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