Recently the blower motor fan quit working in my 2012 Mazda 3. I have replaced the blower motor fan, the resistor under the passenger dash near the cabin filter, and have checked all of the fuses (hood and dash) which appear to be fine. I even took the fan control switch out and it looks to be in tip top shape. What else could be the problem causing the blower motor fan not to run? Trying to avoid ridiculous repair costs. Any help would be appreciated.