Grand Caravan V6-4.0L (2008)
Air Door Actuator / Motor: Description and Operation
Mode Door Actuator
Front Controls
DESCRIPTION
The mode door actuator (1) for the front heating-A/C system is a reversible, 12 volt direct current (DC) servo motor, which is connected directly to the
linkage for the mode-air doors. The mode door actuator is located on the passenger side of the front HVAC air distribution housing.
The mode door actuator is contained within a black molded plastic housing with an integral wire connector receptacle (2), an output shaft with splines
(3) that connect it to the mode door linkage and three integral mounting tabs (4) that allow the actuator to be secured to the air distribution housing. The
mode door actuator does not require mechanical indexing to the mode door linkage, as it is electronically calibrated by the A/C-heater control.
The A/C-heater control must be recalibrated each time an actuator motor is replacedSee: Service and Repair/Procedures/HVAC Actuator Calibration
Procedure.
The mode door actuator is interchangeable with the actuators for the blend-air door(s) and the recirculation-air door.
Rear Controls
DESCRIPTION
The rear mode door actuator (1) is a reversible, 12 volt direct current (DC), servo motor. The rear mode door actuator is located on the back side of the
rear heater-A/C housing.
The rear mode door actuator is contained within a black molded plastic housing with an integral wire connector receptacle (2), an output shaft with
splines (3) that connect it to the rear mode-air door and three integral mounting tabs (4) that allow the actuator to be secured to the rear heater-A/C
housing. The mode door actuator does not require mechanical indexing to the mode door linkage, as it is electronically calibrated by the A/C-heater
control.
The A/C-heater control must be recalibrated each time an actuator motor is replacedSee: Service and Repair/Procedures/HVAC Actuator Calibration
Procedure.
