Why is there no ground on my blower motor?
It seems, too, that the black ground wire on the blower motor (accessible from just below the dash) has NO ground potential. I ghetto jumpered a 16 gauge wire from the back of the metal clip on the ground wire to the dashboard impact bar/brace and the fan turns at variable speeds with the knob!
Where does the power from the blower motor come from?
Of course if both power and ground are present at the blower motor harness connector and the blower does not work that would mean that the blower motor itself was faulty. Power for the brown wire at the blower motor comes from the blower fuse in the underhood fuse box.
Why is the blower motor on my 2007 rabbit not working?
If blower motor works on full speed then it is the resistor which is under the glove box on 2007 rabbit. Video on YouTube available. I have same issue, fuses are fine, fan does not work at all, have pulled blower and applied power- it works.
Why is my two wire blower not working?
Now it seems there is another cause for the blower not working at all. No power on the brown wire at the two wire blower motor harness connector. Of course if both power and ground are present at the blower motor harness connector and the blower does not work that would mean that the blower motor itself was faulty.
How does the blower control module work on a blower heater?
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. Battery Power From Underhood Fuse Box.
Where does the ground go in a Honda blower motor?
The blower motor control module (Honda calls it Power Transistor) supplies the ground. The power transistor has 4 wires: two come from the climate control system control unit, one is the ground, one goes to the negative terminal of 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.
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.
Why does my HVAC blower need to be replaced?
The blower motor is the part of your HVAC system that uses the most energy, so it may very well be the culprit if you see a significant rise in your utility bills. An aging, problematic, or dirty motor has to work harder to properly circulate conditioned air throughout your home, which leads to higher energy consumption.
Why does my blower fan keep getting ground on Black Wire?
The AC system itself has trouble and has a leaky AC compressor (which I also bought a new one to replace!). I broke out the old trusty multimeter and it seems as though the purple wire on the fan motor gets +12v at all times with the fan switch anywhere but OFF.
Why does my blower not work at high speeds?
Blower works on slow speeds, but not on high speed. Check for bad fuse or bad high speed relay. Swap the high speed relay with another relay with the same part number. Also, check the fuse for the control side of the high speed relay. Make sure the ground side of the high speed relay is working. Blower works on some speeds but not others
What to do if your blower motor is not grounding?
You might clear up the problem by just removing the one mount bolt, cleaning both mating surfaces, and reinstalling the bolt. Some guys have had to pry open the small black box and clean the connections inside.
Where is the ground for the blower motor?
I think you need to remove the air filter box to access it. hope that helps ya out. jys1099 is correct. The ground for the HVAC control module (including blower and switch) is G106 which is located on the inner fender wall next to the air filter.
The blower motor is the part of your HVAC system that uses the most energy, so it may very well be the culprit if you see a significant rise in your utility bills. An aging, problematic, or dirty motor has to work harder to properly circulate conditioned air throughout your home, which leads to higher energy consumption.
Is there a red wire on the blower fan?
This is a 1995 Suburban K2500 4×4 6.5 TD. There isn’t a red wire at the fan. On the blower itself there is a purple wire (+12v whenever the blower speed is anywhere other than ‘off’) and black wire which should presumably be ground. I have tested the black wire for continuity to ground and theres almost none at all.
What should I do if my blower motor stops?
Replace blower motor. If you have a variable speed blower motor, replace the blower motor speed control module. If you have a three or four speed blower motor, remove the blower motor relay. If the motor stops, replace the relay. Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period.
It seems, too, that the black ground wire on the blower motor (accessible from just below the dash) has NO ground potential. I ghetto jumpered a 16 gauge wire from the back of the metal clip on the ground wire to the dashboard impact bar/brace and the fan turns at variable speeds with the knob!
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.
The AC system itself has trouble and has a leaky AC compressor (which I also bought a new one to replace!). I broke out the old trusty multimeter and it seems as though the purple wire on the fan motor gets +12v at all times with the fan switch anywhere but OFF.
Why is the blower motor relay not working?
As I understand things – the blower motor relay acts as a switch completing the electrical circuit between the battery, your fan switch, the resistor and the blower motor. It operates when both the ignition switch and fan switch are in the on position. When this relay goes toes up – then nothing on the circuit gets power.
Why is the resistor not working on my blower?
Hi There, The resistor is what controls the speed of the blower motor, not the relay. The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all.
When does a blower motor start to fail?
In most cases, they start to fail by making a high pitched squeal or screeching noise that indicates the bearing is failing. The squealing noise happens most often in the winter during cold startups and may disappear as the motor heats up.