I have an issue with my M1000, it'll start good, than a minute or two later start to sputter, and not rev up, then pretty much die. I have a 1-2 check engine code flashing. How would I go about checking an ignition coil for a failure ? Ive been reading about the wiring harness under the seat. Could there be a wire bared off that would ground out a coil, and throw a code ?