Couldnt resist the opportunity to discover a "new" solution for what aflicts our 03 dash A/Cs. I called Doug--and yes, he simple capped-off the fan control loop. I dont think this is the best solution--as a minimum your engine will tend to run a bit cooler which impacts MPG; and the fact that the engine fan motor is equivalent to about 25 hp, will also have an impact on MPG. Keep us posted on how this turns out.
PS--working with a auto AC fabrication shop here in town, I am thinking about installing a second evaporator [in series] in the space above/infront of the differential, to include an electric fan tied to the dash ACs on-off. This solution is done all the time for stretch limos, mini-buses, etc. If I go this way, I'd remove the aforementioned bypass valve that is tied to the aux freon pressure sensor.
2003 40' MDTS
Garden Ridge, Texas