XPDI display and starting issue

[69boss]

Just purchased a used 2003 XPDI. Started fine until towed home about 400 rough miles. Both keys will not allow the display work. Tried a key from a different ski. The display will work but still won't start. No messages or warnings. Checked for start B+ to the solenoid, none. Removed the block grounds, appear ok. Used a jumper box in case it was a battery issue, still no start. All fuses are good. I suspect the post is bad or a MEPM. Any other things to try or look at?

 

[Coastiejoe]

Only lanyards that are programmed to the MPEM can crank/start the ski.

Jump the solenoid. If it cranks then you have a good battery, good wires, good connections and a good starter. If not, then you need to load test the battery, and all the above items. Once you get it to crank by jumping the solenoid then we can check to see if there is an issue in front of this issue.


Basically, this test eliminates the MPEM, lanyards, starter button and start circuit wires.

 

[Minnetonka4me]

Hit the start button twice with the key NOT on the post. It should turn the gauges on. If it does, its most likely the post since you tried multiple keys.

If nothing happens when you hit the start button, verify what Joe suggested, then start looking for corroded connections.

 

[69boss]

Tried jumping the solenoid, cranks fine. Did look at or remove many of the connections and found nothing corrosive wise. Guess the confusing thing is that the wrong key operates the display but the correct one does not. The beeper cycles loud with the wrong key, very faint with the correct one. No bilge pump or VTS with either one. Appreciate the help, thanks.

 

[Minnetonka4me]

Yeah that makes no sense. Try the start button thing.

 

[69boss]

Yeah that makes no sense. Try the start button thing.

Did that too, no display.

 

[Coastiejoe]

Almost sounds like the keys/MPEM list their programmed compatibility.

 

[Minnetonka4me]

If the gauges dont power on when you hit the start button...you have some sort of battery, wiring, or MPEM issue.

 

[69boss]

Almost sounds like the keys/MPEM list their programmed compatibility.

That's possible? Kind of the only thing that makes sense. Never had an explanation how the keys communicate with the computer or are programmed. The lanyards bounced around inside the front compartment for 5 hours.

 

[Minnetonka4me]

It's possible but it rarely happens. The post is fine b/c it rejects the incorrect key. Again, if you are not getting Gauge power when you hit the start button a few times I would be looking for corrosion.

What doesn't make sense is it rejects the wrong key... It shouldn't do anything if there was a power issue. Please retry the start button procedure.

I keep thinking bad battery but you said it cranked when you jumped the solenoid.
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[69boss]

This is getting wierd. Just tried the start button again with the correct key, no display but beeps 4 times very faint when put on the post then 4 times loud if left on it. When it beeps loud the bilge pump tries to run with each beep. The display still works with the wrong key but no start. I removed all the connectors at the computer, fuses and grounds no corrosion found.

 

[Coastiejoe]

This is getting wierd. Just tried the start button again with the correct key, no display but beeps 4 times very faint when put on the post then 4 times loud if left on it. When it beeps loud the bilge pump tries to run with each beep. The display still works with the wrong key but no start. I removed all the connectors at the computer, fuses and grounds no corrosion found.

Four beeps means it sees the lanyard but it is the wrong lanyard.

However,,, I am leaning in the direction of a poor connection. If it were me, I would open every electrical box there is, remove any bolted wires, clean them, unplug plugs and look for corrosion or a pin that is not fully seated.

 

[69boss]

OK will do that this weekend. thanks for the help.

 

[Seadoobuddy]

Something similar happened to me back in 2011 & 2012.

Read my thread here http://www.seadooforum.com/showthread.php?44901-No-power-at-all&p=271948&highlight=#post271948

Post #41 or so gives the solution to my problem. Something simple but hard to find until you start checking everything.

 

[69boss]

Could you be more specific on post 41? The XPDI wiring diagram has 4 connectors with 26 pins each at the MPEM. Nothing is numbered beyond 26.

 

[ski-d00]

I think it's time to start over in your diagnosing. Your machine is a little different than others are used to where some changes were made in beep patterns. For your year, four short beeps every few seconds means you have the correct key but that the lanyard has been left on the post while not running(very annoying usually). Your beeper is flaking out and not working consistently so it should not be relied on. The faint clicks means the beeper is trying to work but is faulty. They tend to do this for awhile but will soon not work at all intermittently but may have times where it seems to work fine all day on the lake.

When you put the correct key on, does the fuel pump start? If the gauges are not coming on, this usually means no fuel pump either. There is a separate fuse in the front right black box that I suspect has blown. Check this and report back but please be exact and clear if you hear anything even the bilge pump which also may start when the key is put on.

 

[69boss]

Found the fuse inside the black box on the diagram. It is good. Have disconnected every connector and see no corrosion anywhere. No pins are backed out. I am an auto tech and see odd problems all day but Sea Doo's aren't my area of expertise. Going to send the computer to a dealer who has the ability to check it, just so I am not chasing my tail so to speak. I am likely wrong but need to know if it is good or not before spending any more time on this. Thanks again for the help.

 

[ski-d00]

DI MPEMs are very reliable unless you jump start them from a running vehicle. I wouldn't even suspect it to be the problem until you have confirmed you have correct power to the MPEM and checked the outputs.

There are 2 fuses in the front black box. The problem you describe sounds like a blown cut off relay fuse. It is a 30A fuse deeper in the black box. The other 3A fuse if only for the bilge pump.

What noises do you hear when you put the correct key and incorrect key on? fuel pump ever start?

 

[Minnetonka4me]

You can also send your mpem to me and I can bench test it for basic functionality, but I would do the stuff ski-doo described... He's got more experience than most on here.

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[69boss]

DI MPEMs are very reliable unless you jump start them from a running vehicle. I wouldn't even suspect it to be the problem until you have confirmed you have correct power to the MPEM and checked the outputs.

There are 2 fuses in the front black box. The problem you describe sounds like a blown cut off relay fuse. It is a 30A fuse deeper in the black box. The other 3A fuse if only for the bilge pump.

What noises do you hear when you put the correct key and incorrect key on? fuel pump ever start?

The 30a fuse in the black box lid is good, not just looking at it but with a load. Already shipped the MPEM so basically on hold for now. I really don't expect it to be bad. Almost everyone who brings a car in for drivability concerns wants to blame the computer. May be 1 out of 500 is bad so I agree with you. This problem manifested itself after a long tow so suspect the vibration rattled something loose. It isnt costing much [other than time and we still have snow here] to check the computer otherwise I wouldn't do it.

 

[69boss]

Just for an update, the computer is bad. Tried it on another running XP. The problem followed the computer. Not sure what I am going to do at this point. The cost of a new computer exceeds the value of the craft. Kind of bummed out.

 

[Krispy]

That sucks man, perhaps someone on here has one from a ski they are parting out.




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[Minnetonka4me]

Ive got one in stock buddy...PM sent.

 

[jammin777]

@ minnetonka4me, here he comes to save the day!:thumbsup:

 

[ski-d00]

Used DI mpems are pretty easy to find and go frequently on ebay for around $400 with a programmed key. I think I have one as well that I would sell for $400 w/key.