Control Components - Electronic Automatic Temperature Control (EATC): Notes

With the use of a microcontroller, the remote climate control module analyzes input from the following major sources:

• Integrated control panel (temperature, air distribution and blower selection)
• In-vehicle temperature
• Ambient temperature
• Sunload
• Vehicle speed
• Engine coolant temperature

Using these inputs, the microcontroller determines the correct conditions for the following outputs:

• A/C compressor operation
• Blower speed
• Air temperature blend door position
• Airflow mode door position
• Defroster door position
• Air inlet door position