How do I know if my heat actuator is bad?
How do I know if my heat actuator is bad?
When you start the car, or just the AC system, and notice a knocking sound like someone tapping on your door, that is indicative of a problem with the blend door actuator. Inconsistent Airflow: If the blend door is moving back and forth, then the airflow will be diverted incorrectly or maintained incorrectly.
Where is the a / C recirculation door actuator located?
The recirc door actuator is on the top of the A/C module just above the blower motor on the passenger side of the truck. On mine you can see the door if you open the glove box an look over the top of it. I later figured out that you can just deflect the stopper and fold the glove box all the way down and shine a light and you can see the door.
How does a climate control actuator work on a door?
This type of system has a logic circuit in both the control head and the actuator. The control head outputs a voltage representing the desired door position. The actuator contains a logic circuit that interprets that voltage and powers the motor to move the door to the corresponding position.
Why do I have a problem with my actuator?
It helps control the temperature and air flow within the vehicle. When you have a problem controlling the temperature of the air circulating in your car, or if you can’t stop it from shooting out full blast, there’s a good chance that you have a problem with your actuator. Actuator is basically another word for motor.
What kind of motor does an ECC door actuator use?
Most ECC door actuators consist of a reversible DC motor equipped with a gear train that outputs to a drive gear, with an opening for the end of the HVAC door shaft. This shaft is usually square and engages with a similarly shaped opening in the output gear.
When is the Recirc door actuator closed or open?
The Recirc door actuator is closed when a ground is applied at Pin 4 of the Climate Control PCB. When Pin 4 is open the actuator opens the door allowing fresh air to flow into the cabin.
What happens to the climate control actuator when the blower is off?
If the Blower is off, the Recirc door defaults to the fresh air position. The Recirc door actuator is closed when a ground is applied at Pin 4 of the Climate Control PCB.
How to tell if air recirculation door is not working?
You can see the door when you remove the glove box. You can also work the door with a finger…..if it’s got a problem. The door is attached to a mode motor on the left side. The door should be tight, not movable. I figured the gears in the motor were stripped, since I could hear the motor working, without the door moving.
How is the resirc door closed when the AC is on?
When Switched +12V is present the Resirc door is closed by one of the following two conditions: ( (Recirc switch depressed) or (not Defog, plus Max AC, plus AC on)). The AC Compressor control is found at the lower- right of the schematic. Pin 10 outputs +12V to drive the AC Relay.
