General Information

Engine Control
U1008 Lost Communication with Radiator Shutter (Active Air Flap) (C-CAN) - General Information

Component Location





General Description

A.A.F(=Active Air Flap) system is equipped with a flip can be opened between radiator grille and radiator.
During High speed driving, it will enhance the driving stability by closing the flap to reduce the air resistance.
Inside the engine room, the temperature rise is to be a concern if the components overheat the engine room.
it opened the flap function to lower the internal temperature.

DTC Description

U1004 is set when there is no message from AAF.

DTC Detecting Condition





Diagnostic Circuit Diagram










Signal Waveform