SOLVED!! SEADOO DESS shorted to ground! No start no crank. Code P1656 with loud beep!

2006 SEADOO with DESS shorted to ground! No start no crank. P1656 fault code and loud beep! Not the DESS post! Turned out it was a bad key! Watch me diagnosing the issue. Thought it was a $1000 new ecu / mpem for a while!