FasterThanU87

So im working on an 03'Tige with a 350 MAG MPI Tow Sport package. Merc. The thing is my Diacom USB software won't connect when i have his ign on key on but it will work when the boat is runing, possibly low battery? gonna charge it but wanted to start my thread first. Second Problem is when im running it after about 10min it just shuts off and the ECM kicks me out and then i can't connect again or start the boat like it might be in guardian mode but can't check to see because like i said the ECM won't let me link. i have no codes when its running and everything looks ok but the water PSI from the pump is only at 1.97PSI @ an Idle. help please

FasterThanU87

Hey anything think maybe it could just be an ECM going bad? Cuz thats what it seems like but like a said charging the batteries now