How can I diagnose the blower motor

When you do not have proper fan operation, the following are possible causes: -Faulty blower motor -Faulty blower motor relay -Faulty blower motor resistor -Faulty blower motor controls -Faulty wiring or wiring connector at the blower motor That's really about it. Checking the circuit thoroughly is needed. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops