Electronic Automatic Temperature Control

With the use of a microcontroller, the electronic automatic temperature control (EATC) module analyzes input from the following major sources:

• Temperature, Function And Blower Selection (Made By The Vehicle Occupants)
• In-Vehicle Temperature Sensor
• Ambient Temperature Sensor
• Sunload Sensor
• Vehicle Speed Sensor
• Engine Coolant Temperature Sensor

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

• A/C Clutch Engagement
• Blower Speed
• Air Temperature Blend Door Position
• Floor/Panel Door Position
• Panel/Defrost Door Position
• Air Inlet Duct Door Position