Abstract: A method of monitoring operation of an adjustable shutter adapted for cooling a powertrain in a vehicle includes commanding the shutter to adopt a position and assessing whether the shutter has adopted the commanded position. The method also includes generating a first signal if the shutter has adopted the commanded position, and commanding the shutter to perform a first retry to adopt the commanded position if the shutter has not adopted the commanded position. The method additionally includes generating a second signal if the shutter has adopted the commanded position on the first retry. A vehicle using a controller to perform such a method is also provided.

Abstract: A method of monitoring operation of an adjustable shutter adapted for cooling a powertrain in a vehicle includes commanding the shutter to adopt a position and assessing whether the shutter has adopted the commanded position. The method also includes generating a first signal if the shutter has adopted the commanded position, and commanding the shutter to perform a first retry to adopt the commanded position if the shutter has not adopted the commanded position. The method additionally includes generating a second signal if the shutter has adopted the commanded position on the first retry. A vehicle using a controller to perform such a method is also provided.

Abstract: A shutter system for controlling an airflow through a grille opening in a vehicle includes at least one louver. The shutter system also includes a mechanism configured to select a position for the at least one louver between and inclusive of fully-opened and fully-closed to control the airflow through the grille opening. The shutter system additionally includes a slave processor in operative communication with the mechanism and a master controller in bi-directional communication with the slave processor via a single wire. The master controller is adapted to control a selection of the position of the at least one louver by commanding the mechanism via the slave processor using solely the single wire. The slave processor is adapted to respond to the master controller using solely the single wire. A method of controlling operation of an adjustable shutter is also provided.