Power the blower motor direct from the battery and see what happens
January, 12, 2012 AT 4:07 AM
You can power it directly and nothing will happen. It relies on a digital speed signal from the A/C programmer, that comes in on the little gray wire. More than likely, you need a blower motor. Very seldom, in fact never, have I seen a failed programmer cause a lack of blower operation. Check that you do have power and ground at the blower, with a test light across the connectors large wires(red/black). If you have a light across that circuit, replace the blower motor.
January, 12, 2012 AT 9:48 PM
Try to direct wire the motor if no check the voltage to the motor if none. Youll need to remove the blower motor wire it goes to a module in the a/c case replace that blower module.