2005 SeaDoo RXP....computer issue HELP

[jncasey]

Hopefully someone can help me here....PLEASE

I purchased a 2005 SeaDoo RXP with 49 hrs on it. Made local dealer do a thorough inspection to approve sale. Brought it home and after five minutes of riding the trim goes out (trim level not displayed and motor does not work) followed by a loud BEEP. Hour meter loses memory every time the ski is restarted and is stuck at 49 hrs.

Took the ski to a dealer near home and they said my MPEM was bad. I paid over $500.00 to replace the MPEM, replace wear ring and do a seasonal service. Once again, they showed me the trim worked which it did along with everything else. I tried to have them program a learner key as well and they could not get it to program not sure why.

After replacing the MPEM and another five minutes of riding, the damn trim goes out again as well as the hour meter losing memory!!!!! I was enraged...they told me that they could not refund my money because the part was already used.

They then suggested that my ECM/ECU is now the final culprit. Wow, another few hundred dollars. This is ridiculous. The ski has ran perfectly fine since this issue although I haven't been able to use the trim in addition to putting roughly 30 hrs on her.

How do I go about fixing this issue for good so I can sell this thing? Any experience? I don't use it anymore and would like for the computer to work properly.

 

[Dr Honda]

There is a control module for the trim system. If it's shorted out, or the motor is shorted out... it can cause other issues. (like killing your MPEM)

I would start by pulling the trim motor, and make sure the boot is good, and that it's not full of water. After that, I would pull the control module, and make sure it's working. Then, check over all the wires and look for a short.

 

[jncasey]

I had the dealer personally inspect everything regarding the trim motor, wire harnesses and the control module. They said the trim was not the problem and that the computer was causing the issue. I do understand where you are coming from though.

I can take the ski back to the dealer, they hook the computer up, clear whatever codes and the trim works fine and the hour meter records data. After I use it for a few minutes it will beep LOUD and then lose memory as well as vts.

Lets say hypothetically.....the ecu is bad. I replace the ecu with a unit from ebay. How does it transfer lost data? What about the 30 hrs I put on the ski and were not recorded? Will they come back when a new ecu/ecm is installed?