AH! the key is EURO!!. The Euro throttle body vacuum switch has only 2 connections (I had one so I remember it well). Yours may have been modified to 'EPA' requirements which added EGR. It's supposed to have vacuum advance when off idle, and also when at idle and the coolant temp gets too high(that's the 2nd temp switch).

The other vacuum port on the TB switch of the US version feeds the control signal to the charcoal canister purge vacuum switch. (does not purge when at idle) Vacuum for the fuel pressure regulator comes directly from intake manifold.