F 150 2WD Pickup V8-5.4L SOHC VIN 5 (2004)
Control Module HVAC: Description and Operation
EATC MODULE
The EATC module:
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is located in the instrument panel.
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has a vacuum fluorescent display for displaying set temperature, airflow direction, blower speed and diagnostic trouble codes (DTCs).
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utilizes an on-board diagnostic (OBD) feature to supply the technician with diagnostic trouble codes (DTCs). These DTCs direct the technician to
the inoperative component.
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display will switch between Celsius and Fahrenheit when the instrument cluster display is toggled.