I have a 03 RX-DI and I’m having an issue that when we go on the water the screen will flash battery and throw itself into limp mode. Assuming it was the charging system I replaced the alternator and the rectifier. Did not work. My next guess is the ECM is draining the battery and putting it into limp mode because of low voltage. Hooked up to the hose on a battery charger you can rev the ski all day long but take the charger off and it goes into limp. Should I look into and ECM or is there any other options of what it could be