Q&A

Bridge the two wires at the cooling fan switch and see if the fan then works. There are 3 different 1.5L engines in your car a VTEC, a 16 valve and a * valve all are a little different. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online
The water pump rarely fails, if you have no leaks and have replaced the thermostat, I would hope it is a bad radiator fan switch but as you drive down the road a freeway speeds rush air through the radiator is what cools the radiator not the cooling fan (in fact you could take it off and at 30 or 40 mph air going through the radiator is sufficient to cool the engine. My fear is your engine may have a blown head gasket (common problem ) have a simple chemical test know as a "block test" done it looks for the presence of Carbon Monoxide in the cooling system which would only be present if the head gasket was blown.

had the same problem with my 93 civic, radiator looks bad, thought that's the problem. but after changing the radiator and thermostat the car still runs hot, decided to change the head gasket, after changing it, the car runs normal, it was a blown head gasket... hope it helps :)