Coleman UT400 won't rev. Idles fine

[Will Sutton]

I've got a 2023 UT400 (bought from tractor supply) and I've been beating my head against a wall with it.

It will start and idle perfectly. The second I touch the throttle it sputters and dies.

I've checked that the fuel pump is working  (it is).

I've replaced the injector, throttle position sensor, O2 sensor, and intake air sensor. All with no change.

 

I've just taken a look a the schematic, and there is a crank position sensor as well.

Could this be the source of my troubles? If so, where is this thing located? I can't seem to find it on any drawings from the parts suppliers.