What does an ac heater blend door actuator do?
The blend door actuator is a small electric motor in your car that controls your car’s climate control system. It looks like a small plastic box with a few plastic gears on the inside. It is so small that you could easily fit it in one hand if you were attempting to remove it.
How to test heater blend door actuator?
Here’s how. Consult the repair manual to identify which actuators control the defrost-vent-floor “mode door” and the temperature-regulating “blend door.” Then peer under the dash and locate the suspect actuator on the heater box. Have a friend switch between modes or temperatures while you watch the actuator.
How to know if your blend door actuator is bad?
Here are some of the most common symptoms that a blend door actuator has gone bad:
- Clicking Sound. If you hear a repeated light clicking sound coming from under the dash, it can be a bad blend door actuator.
- Wrong Temperature.
- Two Different Temperatures.
Where is the a / C heater blend door actuator located?
1. Remove the instrument panel. For additional information, refer to Instrument Cluster / Carrier &/or Interior Moulding / Trim. 2. Disconnect the LH temperature blend door actuator electrical connector. 3. Remove the 2 LH temperature blend door actuator screws. 4. Remove the LH temperature blend door actuator.
Can a heater be removed from a blend door?
If the door is stuck the heater plenum with need to be removed and the problem resolved before installing the new unit. To test the blend door operation and too double check that you are changing the correct actuator motor turn the blower motor on and work the door in each way. You will be able to feel the air change temperature or vent level.
What happens when you replace the actuator on a blend door?
Once all of the mounting screws have been removed the actuator should become loose. Grasp the actuator and pull it from its mount to remove. Before installing the new actuator it’s a good idea to manually turn the blend door in both directions to ensure it is not stuck which will cause the new actuator to fail.
Where is the actuator for the air flow door?
This actuator is what controls the air flow door. There are two of them. One is for the vents and floor, and the other is for defrost. If it is changing between the vents and floor, the actuator is most likely the problem. Here are the directions for replacement. The two pics attached correlate with the directions.
Where is the blend door actuator on my heater?
Located left hand side of heater box here is a guide to help you see what you are in for when doing the job with the location of the blend door actuators below. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed. helpful? Hello, thank you for the information.
Why does my Blend door open when the AC is on?
If the AC is turned on, the temperature of the cold air can be altered with the temperature control. That control commands the blend door actuator to open or close partially or fully to allow air from the heater core to mix with the cold air from the AC evaporator.
How does a blend door heater head work?
The knob tells the heater control “head” the preferred temperature setting and the control head commands blend door motor operation. The heater control head learns the actual position of the blend door through feedback mechanisms built into the blend door actuator.
How long does it take to replace blend air door actuator?
Calibration of the actuators will take approximately 30 seconds. Reinstall SJB fuse 15. Turn the ignition switch to the ON position and wait 30 seconds before verifying correct DEFROST/PANEL/FLOOR operation. As far as no heat from the left side, that is a blend air door actuator. Here are the directions for the left side actuator replacement.