I believe they were fitted to bikes from 2006 onwards. The function is to cut power to the fuel pump so I am guessing the ecu picks up the sense signal when the bike tips and shuts off the fuel pump.?
I can't see a procedure to reset as such maybe one of the other guys could advise on that.
I'd check the obvious too like the kill switch isn't still pressed in ..we've all done it ; ) Then I'd check the fuses too.
Bar in mind many parts on 750s are in common with thous...
As to Location if you have one on your bike it sits just below the fuel injection rail ,to the left and behind the engine, looks like a black tube. It is connected with three wires from the bottom of the switch..
Good work Joe.
There is a reference to the tilt switch in the F4 manual. However, in the diagnostic section of the manual all it says is "Electric starter does not work: Tilt Sensor Broken: Replace".
No mention of a reset procedure.