Kia 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
...
See also:
Non-operational conditions of rear parking assist system
The rear parking assist system may not operate properly when:
1. Moisture is frozen to the sensor. (It will operate normally when the moisture
has been cleared.) 2. The sensor is covered with forei ...
High Voltage Shut-off Procedures
High Voltage Shut-off Procedures
Be sure to read and follow the “General Safety Information
and Caution” before doing any work related with the high voltage
sys ...
Description and Operation
OBD-II review
1. OverviewThe California Air Resources Board (CARB) began regulation
of On Board Diagnostics (OBD) for vehicles sold in California beginning with
the 1988 model year. The first ...
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