From what i have seen on my 32 gtst... no.
The big sensor is for the ecu, the small one is for the dash temp gauge.
Your fan sensor would have a different signal voltage for a given temp. You could test this with cold water, hot water, an accurate thermometer and a multimeter.
The sensor in the bottom of the radiator is something to do with aircon i think not 100% sure, its not a good location for engine temp control as its after the water is cooled by the radiator.
Its a pain to take off the manifold and either tap one of the existing holes or drill and tap a new one. So i just got one of those bits that goes inline with the top rad hose and you can put a sensor into it. They are usually 1/8 npt. Thermo control sensor may be bigger so you might have to drill and tap, you just have to decide where.
My thermo control is still not set up, i just have a good temp gauge and a switch in the cabin.