Good question. Yes the fan will come on with the AC. Before you replace anything, check to make sure if you are getting power to the fan motors. Turn the AC on and check. If you have a 2 fan system, and I think you do, only one will get power. Check it with a volt meter if you have one to make sure, if there is power, you are getting 12 volts. If there is power to the fan motor, the motor will most likely be bad. You could also unplug the motor and run 12 volts to it from the battery to see if it turns on.
Let me know what you find.
Saturday, March 7th, 2009 AT 9:15 PM