How does a climate control actuator drive the motor?
How does a climate control actuator drive the motor?
The motor is driven by applying power and ground for the desired movement. The polarity is reversed to change direction. The HVAC control head usually provides the voltage, and in most cases, it’s somewhat lower than system voltage. Most ECC actuators contain a potentiometer that’s geared to the motor’s drivetrain.
How to diagnose electronic climate control actuators?
Most Automatic Temperature Control (ATC) systems also use this actuator design. In most cases, the HVAC control head has built-in diagnosis for the actuators and will either display codes on the HVAC display or send them to the PCM or BCM through a data bus. The codes can then be retrieved with a scan tool.
How does a blend door actuator change temperature?
You can choose to recalibrate the heater or simply replace the blend door actuator. Most actuators use electrical motors to change the flow of air and the temperature of the air. They do this by opening and closing that heater box flaps that are under the dashboard.
How does an actuator work on a car?
Most actuators use electrical motors to change the flow of air and the temperature of the air. They do this by opening and closing that heater box flaps that are under the dashboard.
Where is the temperature actuator on a car?
Here is a typical right side temperature actuator used for dual climate controls (also temperature for signal mode units). This actuator hangs below the box which is one of the easier units to replace. Begin by using a small screwdriver to release the wiring safety clip on the harness for the actuator.
What makes up a blend door actuator motor?
A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.
Where can I get a new actuator for my car?
Most systems have three to four of these units placed in various areas around the HVAC plenum that control mode operation and will vary by the car make and model. You can get an OEM replacement actuator from Amazon for what the garages pay for them in most cases.
What happens when an actuator goes bad on a car?
An actuator can go bad in of two ways; first the electric motor can burn out rendering the unit non-responsive so nothing changes when the temperature or vent mode controls are moved. Next, the plastic gear set will become brittle and break which will sometimes allow the unit to work while making a ticking or clicking noise and then stop.
