RAM 2500 Truck 2WD L6-6.7L DSL Turbo (2010)
Air Door Actuator / Motor: Description and Operation
Mode Door Actuator - Description
DESCRIPTION
The mode door actuators are reversible, 12-volt direct current (DC) servo motors. The heating-A/C systems on this vehicle use two mode door actuators.
One for the defrost-air door and one for the panel/floor-air door.
Both the defrost door actuator (1) and the panel/floor door actuator (3) are located on the driver side end of the HVAC housing (2), close to the
instrument panel.
All actuators (1) are interchangeable with each other. Each actuator is contained within an identical black molded plastic housing with an integral wire
connector receptacle (2). Each actuator also has an identical output shaft with splines (3) that connects it to its respective door linkage and three integral
mounting tabs (4) that allow the actuator to be secured to the HVAC housing. The mode door actuators do not require mechanical indexing to the mode-
air doors, as they are electronically calibrated by the A/C-heater control.