Blend Door Actuator: Operation
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
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® 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.