If its anything like a modern 4-wheeled vehicle then there will be loads of potential inputs:
Clutch switch
Brake switches
Gear position sensor
Inclinometer
ABS reluctor rings/sensors
and this is just to get you started, so you now enter the world of requiring a diagnostics scanner and for the Gen3 I don't even know if one exists,
so it would be off to the main dealer, but check first if they have the diagnostics kit?
BHM