Ac not working, Checked Refrigerant, What else to do?

[shevin]

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.

I checked there is a 13.4v DC voltage on the aux fan using my mulitmeter

[bcredliner]

Originally Posted by shevin

I checked there is a 13.4v DC voltage on the aux fan using my mulitmeter

Since you have a meter, with the key on, find the ground connection at the connector and link the ground to each of the negative sides, one at a time, and see if fan activates. The link closes the circuit.

FYI- There is nothing wrong with doing basic troubleshooting to learn or to save some money. I can remember a time that if I didn't figure out what was wrong and fix it myself the vehicle was going to sit until I did. Vehicles are much more complicated than the good 'ol days but I still start with basic troubleshooting in 95% of the cases.