Active Grille Air Shutter

Operation of the active grille air shutter motor is controlled by the PCM, which communicates with the motor on a Local Interconnect Network (LIN) bus connection.

Power for the motor is provided by a feed from the PCM relay in the Engine Junction Box (EJB).

During normal driving operation, the PCM determines air shutter position from the thermal condition of the vehicle, which is an output of the engine cooling fan control logic. The position of the air shutter is calculated using:

• Engine coolant temperature
• Air Conditioning (A/C) demand
• Ambient air temperature
• Fuel temperature.

For additional information, Refer to: ENGINE COOLING