I have a 2001 R100S that just quit running the other evening.  After getting it home i tried to connect my gs911.  No matter what I do, I get the message that the controller is not recognized.  I also get a message that the battery only has 5.0 volts.  I know that isn't true because I connected a new battery and still get the same results.  The engine will turn over, but not fire.  I suspect the Hall sensor, but am unable to run a any analysis to confirm.  Has anyone run into this non recognition problem?  tia  jb