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03 GTX Vans Triple Crown Idle Air Control Valve Always Actuates

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2500hd

2500hd

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I'm having an issue with an 2003 GTX 4tec Vans edition where the IAC valve actuates constantly. Previous owner stated that the battery would drain while sitting, so he would disconnect the battery after driving. I found the the IAC will "click" or actuate about every 15-20 seconds when the Dess key is removed. I was able to ride for the 1st time this weekend and it ran fine the first day, however the 2nd day the ski started shutting of. Sometimes showing "Maint" or "Check Engine" on display. I could here this same valve actuating alot while trying to restart.

I pulled connections on the MPEM and they looked clean and were tight. I pulled ground straps and cleaned. I just found the "Sticky" with the codes so I will try this tonight to see if any are stored..

Any suggestions on what else I should check?
 
It is the Vans Triple Crown edition that as far as I know includes different stickers and the rope pole in the rear. I could possibly be calling the part the wrong name? I tried looking for schematics and part diagrams and the only plug I could find that looked similar is for the IAC.

picseadoo04gtx4tecad.jpg

seadoo.jpg
 
That is the TOPS valve in the picture, not a idle control valve. It needs to be connected and the click you hear is normal and you should hear it click after a 30 or so seconds after installing the DESS key. The Idle Control Valve is on the throttle body itself. Also never heard of a VANS Triple Crown edition but just searched for it, seems its just added graphic trim kit and maybe a ski pole.
 
TOPS valve, now I can search for more information on that. This valve will click constantly, that's what runs the battery dead.
 
Does it click with the Dess key off the post? You can check the tops switch. Maybe it fell and is thinking the ski is flipped. Usually it's located on the mpem.
 
I hear it click with the dess key on, but I believe it stops. When key is removed, it will continue to click about every 20 seconds. I tried checking for codes, but after hitting the Set button 5times it only displays "END". After reading through owners manual, the dess key is suppose to create two beeps. I haven't heard this beep at all?
 
Your beeper may be bad. Of the tops valve clicks with the dess key removed that isn't normal. Try and find the tops switch. It is what tells the valve to close if it is flipped over. If that checks out I would have to say it's a mpem or ecu issue. But that is just a guess. When the dess key is removed all power should be off. Something is keeping it active.
 
2500hd said:
I'm having an issue with an 2003 GTX 4tec Vans edition where the IAC valve actuates constantly. Previous owner stated that the battery would drain while sitting, so he would disconnect the battery after driving. I found the the IAC will "click" or actuate about every 15-20 seconds when the Dess key is removed. I was able to ride for the 1st time this weekend and it ran fine the first day, however the 2nd day the ski started shutting of. Sometimes showing "Maint" or "Check Engine" on display. I could here this same valve actuating alot while trying to restart.

I pulled connections on the MPEM and they looked clean and were tight. I pulled ground straps and cleaned. I just found the "Sticky" with the codes so I will try this tonight to see if any are stored..

Any suggestions on what else I should check?
Click to expand...

The MPEM should go to sleep shortly after the lanyard is removed but apparently this isn't happening for whatever reason, try unplugging the DESS post (DESS reader)?

One more thing concerning aftermarket equipment needs to be mentioned, seen a lot of "fish finders" incorrectly wired. This includes those fancy bilge pumps that click on automatically every so often to test the waters, anything parasitic like that adds up and is suspect.
 
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My next step I believe is that I'm going to check connections for the DESS key and check the ECU connections. When the ski ran on Saturday it operated normally, and when the key was pulled the TOPS would start actuating. However on Sunday it started shutting off- giving a 'MAINT' and 'CHECK ENGINE' on the display. I believe the TOPS valve actuating is just the result of something else? I've printed some info and will do more inspecting if time allows tonight after all the kids practices.
 
I was able to finally do a little more troubleshooting. At this point the only thing that have been able to fix is the beeper. The beeper was bad-installed a radio shack replacement with the help from posts on this site. Now the beeper will give 2 beeps when installed.

Original issue- TOPS valve clicks when DESS key is removed. Pulled the TOPS switch (interupter) and ohmed the switch and works correctly when flipped upside down and when mounted in the ski. Checked the TOPS valve, getting 2ohms resistance which is within range. ??Not sure where to go next.

MAINT message- I pulled the plugs from the ECU and found some residue (not alot). Cleaned the residue out and used some contact cleaner to remove any remaining corrosion on pins. Nothing has changed. The ski will start and run. I haven't had it back on the water yet as I really haven't fixed the original issues. Still no P codes stored.
 
If you get a check engine, it stored a code. You have to press set 5 times WHILE it is happening. If you pull the lanyard and put it back on, the code will be gone if the check engine is gone.

It stored the code, you just can't read it. You'll need BUDS or CanDoo to get it.
 
I believe my next step is taking it to a dealer since my hands are tied when it comes to connecting to the jetski for the rest of the troubleshooting.
 
No, you just have to press set 5 times while it is occurring. The MAINT message that comes on when you first put the key on is probably just the hourly interval it has reached but will need to be reset by dealer or live with it since it doesn't hurt anything. The check engine is a problem.
 
I was able to get the ski out on the water today to try and regenerate a check engine light. After about 20 miles the ski shut down. I received the p0604 code. It would restart after removing the key and then re-installing it. I tried to find a pattern that could create the code and I noticed it would typically fault while I was in the process of slowing down from cruising. I generated it 4 different times. Then it generated a P1682 code. This turned out to be fatal. The LCD display would stay on with the key removed. No response from the ski. I unhooked the battery but as soon as the battery connected back, the display automatically comes on.

P0604- RAM faulty
P1682-Communication problem: EMS Message missing

At this point I have to take it to a dealer. Now I need to get some feedback about some of the local dealers I can trust to diagnose. I'm feel pretty certain at this point it's the ECU, but I'm not going to risk purchasing this if it's not needed.
 
I dropped the jetski off at the dealer and am waiting to hear the diagnosis. Then I'll have to decide whether I fix it now or wait till spring?
 
2500hd said:
I dropped the jetski off at the dealer and am waiting to hear the diagnosis. Then I'll have to decide whether I fix it now or wait till spring?
Click to expand...

Now is a relatively slow time...excluding winterizing for the odd lazy waterfront owner....

Come spring time...most dealerships get busy quick.

just sayin
 
Sportster-2001-951C-Stock said:
Yep, how busy winterizing could SML service shops be?
Click to expand...

With 500+ miles of shoreline...figure...I dunno...20k residents...figure a third of that full time...quite a few boats ect gonna be getting tucked in for the winter in the next coupla months. The reverse happens comes the first warming next year.
 
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