Kia Optima: Active Air Flap(AAF) Description and Operation - Cooling System - Engine Mechanical SystemKia Optima: Active Air Flap(AAF) Description and Operation

Description
The AAF (Active Air Flap) is located between radiator grille and radiator, and consists of an actuator and 6 air flaps. The system receives information from EMS, FATC, TCU, MCU and LDC via CAN communication . With this information, the AAF controls the motor properly then the air flaps adjust air flow from radiator grille.
During high speed driving, it will reduce the air resistance by closing the air flaps. This improves the fuel efficiency and enhance the driving stability. If overheat occurs, the system will open the air flaps to drop the temperature.
During the A/C operation, the system will open the air flaps to maintain the refrigerant pressure.The system will close the air flaps to warm up the engine rapidly during cold start.
Specifications
Items
Specifications
Operating temperature
-22~185°F (-30~85°C)
Operating voltage
DC 9~16V
Rated voltage
DC 12V
Rated current (No load)
300mA or less


Thermostat Troubleshooting
Troubleshooting SymptomsPossible CausesRemedyCoolant leakage • From the thermostat gasket Check the mounting bolts • Check the torque of the mounting bolts • Reti ...

Active Air Flap(AAF) Components and Components Location
Components 1. Air duct2. Cover3. Actuator assembly4. Loader5. Flaps6. Link7. Housing ...

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