GSX-R1000 FI Lamp → Shutdown

So it seems the bike stopped somewhere
and the owner brought it in loaded on a car.
I’m not really sure what FI is all about, and do we need some kind of diagnostic tool?
The owner brought a basic wiring diagram, so let me check it out.
 

 
Well, well…
 

 
…..
I kind of figured out the cause, or maybe I didn’t…
It’s fixed now, but I honestly can’t say whether this kind of thing is what triggers the error. ★