fan motor not working

I'm assuming you've checked any fuses for climate control or AC system? If so, there are a few things that could be causing this. The selector switch for the fan isn't working anymore, the blower resistor is bad, or the blower motor is bad. Check to see if you're getting voltage to the blower resistor from the switch. If not, the switch has failed and needs replaced. If it is, turn it off and remove the resistor to inspect. Ones I've seen fail have very obvious signs of overheating or burning. I don't personally know how to test resistors but I've never seen one fail that didn't show damage. If it looks fine, and is getting voltage from the switch, then it is on to the blower. Do a continuity check across the motor windings. If that is good then from each terminal to the If across the windings you get OL, then the motor is bad. I would say check to see if it is shorted but it grounds in the metal housing so no way to test that. Try spinning the blower by hand, also. It should spin easily and freely, no grinding, no wobbling. If it grinds, squeals, or wobbles, replace it. If it doesn't spin, replace it. For your vehicle you're looking at ~$30 for the resistor, or $30 for the blower motor assembly.