Theory Of Operation
WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
The rear mode and temperature blend doors are controlled by a two wire actuator. The door actuator motor will rotate either clockwise or counter clockwise by reversing the polarity of the circuits depending on the command from the controller. The A/C Heater Module monitors the circuits for proper operation and will set a Diagnostic Trouble Code (DTC) if a fault is detected. For further information. Refer to OPERATION .