Charger V6-3.5L (2009)
Air Door Actuator / Motor: Description and Operation
Mode Door Actuator - Operation
OPERATION
The mode door actuator is connected to the A/C-heater control through the vehicle electrical system by a dedicated two-wire lead and connector of the
HVAC wire harness. The mode door actuator can move the floor, defrost/demist and the panel-air doors in two directions. When the A/C-heater control
pulls the voltage on one side of the motor connection high and the other connection low, the mode-air doors will move in one direction. When the
A/C-heater control reverses the polarity of the voltage to the motor, the mode-air doors moves in the opposite direction.
When the A/C-heater control makes the voltage to both connections high or both connections low, the mode-air doors stop and will not move. The
A/C-heater control uses a pulse-count positioning system to monitor the operation and relative position of the mode door actuator and the mode-air
doors. The A/C-heater control learns the mode-air doors stop position during the calibration procedure and will store a Diagnostic Trouble Code (DTC)
for any problems it detects in the mode door actuator circuits.
The mode door actuator is diagnosed using a scan tool See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures.
The mode door actuator cannot be adjusted or repaired and must be replaced if inoperative or damaged.
