How to Fix a SeaDoo MPEM Diode 

It's like magic isn't it? I didn't think it would work when I first did it 😂 glad you gotter runnin

That's great. Glad to know it helped and saved you some $$

Quick update. Today we installed the repaired MPEM, did some final checks, held our breath and hit the start button. It started up and ran on the third try! 😁😁😁 A great big THANK YOU Jonathan. Your video was a huge help, made me a bit of a hero and put a great big smile on me and my sons face. Cheers!👍

That's great to hear. Glad it helped.

He'll yeah..easy fix once I did it.

@@jonparkmac I have mine prepped and ready to go, just waiting on the diodes I ordered to come in this afternoon. I used a thin cutting wheel on a Dremel to cut the plastic in the same area as you did with the drill press/rotary cutting bit. I was able to cleanly cut a rectangular window out that fits tightly back in place I'm thinking about covering the repair area with some 3m VHB foam mounting tape like you would use for mounting automotive trim pieces on a car body instead of silicone. I could mount the plastic window I cut out on top of the double sided mounting tape. It would be watertight and that VHB tape sticks to anything extremely well. That would make it very easy to access for future repair if needed. Anyways, thanks again for the video. Your video made it really simple to locate exactly where to cut for best access the diode.

@@jonparkmac I have it all back together again and it beeped when the key was put on the post and fired right up. Back in business, thanks again for the helpful video!

@@TheFishingHobby that's a good idea on the little hatch thing. I wanted to do something like that but got lazy. May also consider slapping a strip of duck tape over the hatch. It's only an issue if the ski flips and the mpem gets submerged.

@@jonparkmac the VHB tape is waterproof and you can pick it up at most home improvement stores. It is handy for a lot of other things too.

Hope it helps brutha ..I learned from another and passing on the tribal secrets

Your multimeter needs to be set on "diode mode" and not ohms or any other setting.

Transient Voltage Suppressor diode ..common surge protection on delicate electronics. Trying to jump a ski with a running auto can pop them. Mine was from a loose battery connection I think but not sure.

The tell tale is the 5amp fuse blows as soon as you put the key on.

Glad to help. I got them on eBay. Part number is MR2535L 6a

I have not .. but sounds fun 😊

You ONLY want to try this if the mpem is blowing the 5a fuse when you put the key on to wake it up. That's the symptom. The one i use is a MR2535L 6A transient voltage suppressor (tvs). But not sure about a 2001. The hard part is finding the right spot to dig.

@@jonparkmac I have only had my ski for a few months rode 3 times. It did blow a fuse once then the next ride had to be towed back it wouldn't start but all accessories worked then it managed to start again after playing with the ignition coil wires. Now I get absolutely nothing from the mpem tested power to it ect. Also if it's the key I will probably need a new mpem anyway as my local dealer says to bring in existing key and ski to program a new key. I guess to prove you do own a key to bad if the key died though

Don't need a new mpem. Key is programed to the mpem. You just need to show proof you own the machine. Find a friendly power sport shop with CAN-DOO and they will program it. But check all your connections and you may need to replace your DESS post. Is your 5a fuse blowing or not?

Happy too .. IM me on FB ..facebook.com/jonathan.mcclure.9?mibextid=ZbWKwL

@@jonparkmac thank you man I sent you a message

I want to start saying this is a very good video, not many people takes the time to explain how to fix things. Hello everyone I need your guys help I have a 1998 seadoo gs with electrical problems if I plugged in everything like supposed to be my battery reads 0 and if I unplugged the mpem now my battery reads 1230 off charge I follow the power and the ground to the mpem plugg and I find out which one is the power and which is the ground now with a different battery I plugged ground and power to mpem and blew out my 5 amp fuse, no matter how many times do this always blows out my fuse and I disconnect my starter from everything and I connect the cables from the starter to the battery and my battery reads 0 I checked continuity and the starter and the mpem and between the ground and power and I got continuity, do you guys think my starter went bad an blew out my mpem?

What year/model? There is usually a 15a fuse in the rear electrical box. It feeds power to the mpem from battery thro a red-purple wire. Check that fuse and polish up all of those connections in there. Also check your ground connection to motor.

@@jonparkmac 1997 gti . well i made an opening in the case and checked the diode just like you did and its fine. i checked the ground all fuses, still nothing. im stumped

Check that you get 12v on the red/purple up to the mpem. You can pull the plug and look in the manual for which pin to test. If you can't get a read there then something between that pin and the battery * post is not conducting

@@jonparkmac i checked for 12v and good ground. i think its a bad MPEM. no 5v fuse blowing but everything checks out otheer then the MPEM. i could get it checked but it $45 plus shipping. and a fix is over $400

Sounds like it's hosed. Sorry man, that's painful. You can source a used good one. Try Westside power sports.

It's a 6a / 20v transient voltage surge protector ...MR2535L DIODE TVS Surge 6A 20V

MR2535L 6a

Does any other diode work? Difficult to find that exact one outside US.

Sure, I can try. It may take a few weeks tho, I normally don't do repairs for people but I like to help a brutha out. You sure you don't want to try to yourself?

Where are you located so I can send you my to from North Carolina 1998 seadoo gs

Hi is it possible to remove the casing entirely or it's too much work?

It's possible to remove the potting but way to much trouble and not necessary. It's melted rubber potting poured in as liquid. There is easy way to open the case ..it's entombed

@@jonparkmac ok entombed lol do you know where to find replacements module for speedster 2000 ?