What do you need to know about the blower control module?
Basics Of Troubleshooting The Blower Control Module. The blower control module is a solid state device unlike the old style blower motor resistors that actually use resistors. It controls blower motor speed by varying the voltage it sends to the blower motor.
How does the blower control module in GM 3.8L work?
You can find this tutorial in Spanish here: Cómo Probar El Módulo del Motor del Soplador (3.8L GM) (at: autotecnico-online.com ). The blower control module is a solid state device unlike the old style blower motor resistors that actually use resistors. It controls blower motor speed by varying the voltage it sends to the blower motor.
How is the speed of the blower motor controlled?
The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.
Where is the blower motor resistor located on a car?
It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.
How do you change the blower control module?
Disconnect the cable from the bottom of the core. Be careful not to move the core too much, since the AC is still connected. The blower control module needs to be slid to the drivers side to unlock it. Then pull it towards the fire wall and rotate it, it should now be free to drop it down the back.
How much does it cost to replace a blower motor resistor?
The blower motor resistor or control module replacement is not very expensive. For example, one of our colleagues had a problem with his 2011 Ford Escape: the fan only worked at the speed 4. He paid $50 to diagnose and $112 to replace the resistor at a local Ford dealership.
The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.
How to replace an AC blower control relay?
Simply remove the screws, unplug the electrical connector on the resistor and the pigtail that secure the blower motor resistor from the blower, remove the resistor or heater control relay assembly, and install the new resistor in place. OEM Fit, Quality, Finish – All mounting ports and sockets on the resistor are identical to your factory part.
What are the symptoms of a worn out blower motor?
One of the symptoms of a worn out blower motor is that it can intermittently produce a loud screeching noise when running. How to test a blower motor? If the blower motor doesn’t work at all, the blower motor itself must be tested first. Typically it’s done by measuring the voltage at the blower motor connector when it’s turned on.
Basics Of Troubleshooting The Blower Control Module. The blower control module is a solid state device unlike the old style blower motor resistors that actually use resistors. It controls blower motor speed by varying the voltage it sends to the blower motor.
You can find this tutorial in Spanish here: Cómo Probar El Módulo del Motor del Soplador (3.8L GM) (at: autotecnico-online.com ). The blower control module is a solid state device unlike the old style blower motor resistors that actually use resistors. It controls blower motor speed by varying the voltage it sends to the blower motor.
What can I do about intermittent blower motor?
Try cleaning it by cycling the control from minimum to maximum rapidly a dozen times or so with the truck off. If that does not work you could take the HVAC controller out and try to get some spray electrical contact cleaner inside the rheostat and again swiping it a number of times.
What causes a blower motor to stop working?
In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely. Blower motors generally don’t fail out of the clear blue.
When did GM start using blower control module?
This is because this particular blower control module was used in several models from 1992 to 1999. To find out if your particular GM vehicle is covered by this troubleshooting tutorial, check the box titled “ Applies To: ” on the right column.
How does a furnace blower fan assembly work?
An example furnace blower motor fan assembly shows the blower motor connected in center and held in place by the mounting bracket, surrounded by the blower fan wheel and air outflow duct assembly. You can see the color coded wiring and run capacitor coming from the motor. Note that different assemblies will vary.
What are the symptoms of a failed blower motor resistor?
Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.
What causes a fuse to blow on a blower motor?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
What is the function of the blower motor relay?
The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor. The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems.
Why is the blower on my GMC not working?
A few brief tests revealed the Blower Control Module had failed and was not providing power to the blower motor. Gm vehicles with digital climate control use a Blower Control Module instead of a Blower Resistor to control power to the blower motor. Failure of this module and it’s manual HVAC counterpart the Blower resistor is common.
Where is the blower motor resistor on a Lincoln?
@puneetsingh your Lincoln does not have a Blower Motor Resistor in the conventional sense. It uses a blower motor speed control module . It’s located under the hood, mounted to the A/C evaporator housing on the passenger’s side rear of the engine compartment. This video shows you the location and how to replace it.
A few brief tests revealed the Blower Control Module had failed and was not providing power to the blower motor. Gm vehicles with digital climate control use a Blower Control Module instead of a Blower Resistor to control power to the blower motor. Failure of this module and it’s manual HVAC counterpart the Blower resistor is common.
Where can I get a replacement blower motor resistor?
Located in sunny South Florida and founded by long time car enthusiasts, AA Ignition takes pride in providing quality products at an exceptional value. This is a compatible replacement part manufactured by AA Ignition. This Blower Motor Resistor is NOT a genuine Chevrolet, GM or Dorman part.
It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.
Where is the blower control module in the HVAC box?
It is basically a FET transistor that varies the voltage to the blower motor. The blower control module is on the back side of the HVAC box next to the firewall. It is not a resister pack as it use to be in the older vehicles. It is basically a FET transistor that varies the voltage to the blower motor.
Is there a problem with the GM blower motor?
If you have a General Motors car or truck from 2002 through 2008 you’ll probably have a blower motor issue at some point. In many cases it’s a problem with the GM blower motor module. The most common complaint when this part fails is the motor will not turn on at all.
If you have a General Motors car or truck from 2002 through 2008 you’ll probably have a blower motor issue at some point. In many cases it’s a problem with the GM blower motor module. The most common complaint when this part fails is the motor will not turn on at all.
How does the voltage affect the blower motor?
This varying voltage signal is the blower motor speed signal that tells it what blower speed you’ve just selected on the A/C-Heater control panel. The blower control module then translates this blower motor speed signal from the A/C-Heater control panel signal and applies the corresponding voltage directly to the blower motor. Empty.
This varying voltage signal is the blower motor speed signal that tells it what blower speed you’ve just selected on the A/C-Heater control panel. The blower control module then translates this blower motor speed signal from the A/C-Heater control panel signal and applies the corresponding voltage directly to the blower motor. Empty.