Over heating radiator fans aren't coming on?

I've got an 04 focus SVT, the radiator fans aren't coming on, ive got power everywhere, but im not getting a ground signal to the relays to turn them on in high or low, relays all test good, fuses are good, and the fans work when power is supplied, the coolant temp sensor was replaced with the thermostat a few months ago, the resistance on the sensor is good and fluctuates normaly with temp changes. There is not a head temp sensor, are there any other sensors that the pcm uses in order to call for the fans to come on? Side note, AC system doesn't work, due to a lack of refrigerant