Hyundai Genesis DH Quiz
Engine Mechanical System

Active Air Flap (AAF) Description and Operation

In this manual: Engine Mechanical System
General Information — 9Engine Mechanical System — 103Engine Electrical System — 54Emission Control System — 23Engine Control System/Fuel System — 127Automatic Transmission System (SBC) — 90All-Wheel Drive (AWD) System — 20Drive Shaft and Axle — 27Suspension System — 41Steering — 19Restraints — 56Brake System — 56Body (Interior and Exterior) — 211Body Electrical System — 279Heating, Ventilation, and Air Conditioning — 55
~1min read

Description

The AAF (Active Air Flap) is located between the radiator grille and the radiator and consists of an actuator and 6 air flaps. The system receives information from the EMS, FATC, TCU, MCU and LDC via CAN communication. Based on this information, the AAF controls the air flaps, which regulate the airflow from the radiator grille. During high-speed driving, this reduces air resistance by closing the air flaps. This improves fuel efficiency and increases driving stability. If the engine overheats, the system opens the air flaps to lower the temperature. During air conditioner operation, the system opens the air flaps to maintain refrigerant pressure. When the engine is cold-started, the system closes the air flaps to warm up the engine quickly. Specifications
Items Specifications
Operating Temperature -22~185°F (-30~85°C)
Operating Voltage 9 - 16 V DC
Rated Voltage 12 V DC
Rated Current (No Load) 300 mA or less

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A quick Hyundai Genesis DH quiz: every answer comes with an explanation and a link to the manual page.