Not 100% positive about all PP models but the ones I'm familiar with will beep to let you know to back off the throttle so that because that's how PP takes over. Unfortunately I think your boat was manufactured with the DBW so there are no cables since the throttle is all computer controlled. If you have a mechanical servo that look like http://www.wakeworld.com/MB/Discus/m...921/283204.jpg then you can disregard everything I've said. If you don't have a mechanical servo then it's DBW and the problem is electrical somewhere