96 Seadoo Xp Blows 15 Amp Fuse in Rear electrical box.

[96xp12]

Hi Guys, had the Seadoo out for a ride and it just lost all power, got it into shore and checked the rear box 15 amp fuse was blown, and arches when disconnecting /hooking battery up, I had a spare so I replaced it and it blew instantly. Pull Seadoo out of water and got in the garage disconnected the battery and pulled apart rear box and the front box and the fuses on the MPEM were blow also I replaced blown fuses and hooked everything back up. I then unhooked the vts, and then hooked battery up and it blew the 15 amp again. So I then disconnected the harness going to stator cover and it wouldn't blow the fuse. So I took stator cover off and cleaned the Stator an Pickup with compressed air, both had some metal shaving on them, I then reinstalled the cover tried it again, it arches at battery and blows fuse. Not sure what to do next.

The following has been done before ride and worked on prior rides:
- New Neg./Pos. cables going to battery and starter
- All connections cleaned and new dielectric grease applied to connections and fuses
- New VTS Motor which work, I tested, module is shot need to fix at later time.
- New Starter

 

[racerxxx]

Well, if you disconnect the harness going to the stator and it doesn't blow you'll need to check the stator for a direct short. You can check continuity across 2 of the yellow wires going to the voltage regulator. But there are 3 so you'll need to change it up across the 3 wires if you know what I mean. You can also check continuity from somewhere clean on the engine to each one of the yellow wires. You should not get continuity on a good system. It's possible the stator has shorted to ground.

 

[96xp12]

Thanks for the quick responses, so to be clear I'm on the same page are talking about taking continuity from the plug going to stator cover to voltage regulator in front elec. box. I will try testin in AM, will report back with results.

 

[racerxxx]

Open the gray box, find the 3 yellow wires and one red going to the voltage reg. Disconnect the yellow ones then check continuity. Much easier than trying to get the correct pins inside the connector.

 

[96xp12]

So I checked for continuity on all the yellows and I don't have continuity from any of the yellow wires, I have continuity between one yellow and the red wire.

 

[hotrodssnova]

Check the yellow wires from the stator to engine block for a short. I had a spare harness and used it for testing.

 

[96xp12]

Nova, good suggestion, I used head bolt as ground used harness and all yellow wires and black grounds have continuity, From the results of that test the stator and pick up good correct ?

 

[JJinSC]

If you have continuity from any of the yellow wires to the engine block, you have a short. Not good.

 

[96xp12]

I took stator cover off again and unbolted the stator and found a chuck of metal and a magnet stuck on the back side. I inspected the pickup assembly that looks good nothing broken off or missing, stator looks good also nothing missing or broken. Not sure where the pieces came from.

 

[hotrodssnova]

If the chunk of metal or magnet scratched any of the windings, that could cause the short you are looking for. The scratch could be super small and not see it.

 

[96xp12]

I put stator back on cover an put the cover on the engine and diid the block to yellow wires test had no continuity on the yellow wires.

 

[hotrodssnova]

Should be good to go then. Keep us informed.

 

[racerxxx]

Nova, good suggestion, I used head bolt as ground used harness and all yellow wires and black grounds have continuity, From the results of that test the stator and pick up good correct ?

I guess you missed that in my post? I'm just glad Nova reiterated it and you checked it. Hopefully you're good to go!!!!!!!!!!!!!!!!!

Well, if you disconnect the harness going to the stator and it doesn't blow you'll need to check the stator for a direct short. You can check continuity across 2 of the yellow wires going to the voltage regulator. But there are 3 so you'll need to change it up across the 3 wires if you know what I mean. You can also check continuity from somewhere clean on the engine to each one of the yellow wires. You should not get continuity on a good system. It's possible the stator has shorted to ground.

 

[hotrodssnova]

Been there with the testing. Best thing is to harvest a wiring harness from a junk ski. Bonus is you get parts! Best time to get a spare ski is end of summer.

 

[96xp12]

Yup all was good, had the seadoo out on water for about 6hrs today and didn't miss a beat. Thanks to all that helped on this issue, it is greatly appreciated, his forum is truly amazing how much knowledge there is about these seadoos, better than any manual.

 

[96xp12]

Sorry Racer, I meant to also tell you good advice, I did notice it in the in the test todo, that ended up being the test that need to be done.

 

[racerxxx]

Yup all was good, had the seadoo out on water for about 6hrs today and didn't miss a beat. Thanks to all that helped on this issue, it is greatly appreciated, his forum is truly amazing how much knowledge there is about these seadoos, better than any manual.

Sweet!!!!!!!!!!! Yep we have a great source of knowledge here on the forum. If you ask the right questions, guaranteed you'll get the right answer! You just have to do the labor. I know what you just did in the hull of an X4 is not a fun job so kudos to you for hanging in there!