Actuator, Blend Door: Description: Description
The blend door actuators (1) are reversible, 12 volt direct current (DC), servo motors. Both dual zone heating-A/C systems use two blend-air doors, which are controlled by two blend door actuators.
The driver side blend door actuator is located on the driver side end of the HVAC air distribution housing and is mechanically connected to the driver side blend-air door. The passenger side blend door actuator is located on the passenger side of the air distribution housing and is mechanically connected to the passenger side blend-air door.
The blend door actuators are interchangeable with each other, as well as with the actuators for the mode-air doors and the recirculation-air door. Each actuator is contained within an identical black molded plastic housing with an integral wire connector receptacle (2). Each actuator has an identical output shaft with splines (3) that connect it to its respective door linkage, and three integral mounting tabs (4) that allow the actuator to be secured to the air distribution housing. The blend door actuators require mechanical indexing to the blend-air door cams and are electronically calibrated by the A/C-heater control.