What's so strange? Which one are you referring to? The TVS has a set of contacts that should be closed at idle and another set that close at WOT. That's why the pigtail has three wires - idle switch, WOT switch, and a common ground.

The microswitch should open and close as you hear it "click", but I can't remember if it is normally open or normally closed. If continuity flips between zero and infinity as it clicks, it's probably okay.

If both the microswitch and TVS don't send the proper signal to the ECU the automatic idle stabilization system will not engage to control idle speed, and the result is usually a high idle.

Duke