The ECU is going to feed a voltage to the fan circuit depending on what the temp sensor and/or temp switch is sending. I can't see the schematic for that relay very well (not as big as I'd like), but it sounds as though if you put battery voltage positive to pin 1 and negative to pin 2, you will be able to get continuity between terminals 3 and 5.
Edit: I was looking at the relay that was in the wiring diagram that you linked, it is the wrong relay. It looks like the same pin out, but I am standing by my disclaimer. If I can't see the actual schematic for the relay itself, I can't guarantee that I'm correct when I tell you what pin does what!
Last edited by worthirt; May 25th, 2014 at 09:01 AM.