A/C Electronic Blend Door Actuator

WARNING: This page is about a different car, the 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

The A/C electronic blend door actuator is located on the top of the plenum housing.

Its function is to move the air temperature blend door on command from the temperature control switch.
The A/C electronic blend door actuator contains a reversible electric motor and a potentiometer. The potentiometer wiper is connected to the actuator output shaft and moves with the output shaft to indicate the position of the air temperature blend door.