Originally Posted by bcredliner

Yes there is constant power to the connector and the aux fan is also used for supplemental radiator cooling. However, there is an AC aux fan switch and also a radiator fan switch that closes the circuit. Power to the fan was intended to mean to check if there is a complete circuit on wires that go into the fan to see if the fan is the problem or the AC switch. You could also do the test at the connector which would also verify if the fan or switch is bad. I was thinking it would be easier check near the motor as it could be that the problem is only the low speed that runs for AC.