2001 200hp Optimax. Alarm came on along with Engine Data Bus on the SmartCraft tach. Engine shut down after almost a minute after the alarm came on. Was able to restart. Ran fine for 30 seconds and then alarm and shutdown again. Engine will not start now. When I turn the key on the normal one beep is not there,but the Engine Data Bus message is cleared. If I leave the key on for about 60 seconds, the alarm comes back on again, the fuel pumps, both hi and lo, come on for about a minute with the alarm, the Engine Data Bus msg comes back on, and then it stops and starts the alarm and pumps again. This continues until I turn off the key. What could cause the alarm to come on AND the fuel pumps to run. Thanks in advance!