The fan for the heater stopped working. on 2002 Kia Spectra

The fan for the A/C Heater stopped working and don't know what the issue it. Last week it would work then stop, then work and now has stopped completely. Don't know if its the motor or maybe the relay. How can I narrow down the problem?

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2 answers 3 comments
check power to blower motor, no power = check blower resistor, power = bad motor...
How do I test the motor and resistor? Do I take it out and take it somewhere?
How do I test the motor and resistor? Do I take it out and take it somewhere?
How do I test the motor and resistor? Do I take it out and take it somewhere?
test blower motor if it works poss blower motor resister