Liberty 2WD L4-2.4L VIN 1 (2005)
Air Door Actuator / Motor: Description and Operation
Blend Door Actuator
Blend Door Actuator
The blend door actuator is a reversible, 12-volt direct current (DC), servo motor which mechanically positions the blend-air door. The blend door
actuator is located on the top of the HVAC housing.
The blend door actuator is contained within a black molded plastic housing with an integral wire connector receptacle and three integral mounting tabs
that allow the actuator to be secured with three screws to the HVAC housing. The blend door actuator also has an output shaft with splines that connects
it to the linkage that drives the blend-air door. The blend door actuator requires mechanical indexing to the blend door linkage.
The blend door actuator is connected to the A/C heater control through the vehicle electrical system by a dedicated three-wire lead and connector of the
instrument panel wire harness. The blend door actuator can move the blend-air door in two directions. A potentiometer within the actuator allows the
A/C-heater control to know the exact position of the blend-air door at all times.
The blend door actuator can be diagnosed using a DRBIII(R) scan tool. Refer to Body Diagnostic Procedures for more information.
The blend door actuator cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.