Expedition 4WD V8-4.6L SOHC VIN W (1999)
Control Module HVAC: Description and Operation
Electronic Climate Control Module
The electronic Automatic Temperature Control (EATC) module, located in the instrument panel, has the following features:
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11 push buttons
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a blower speed override thumbwheel for manual input
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a vacuum fluorescent display for displaying set temperature, ambient temperature, function and Diagnostic Trouble Codes (DTCs)
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an On-Board Diagnostic (OBD) feature to supply the technician with DTCs. These DTCs direct the technician to the inoperative component.
