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Old 10-31-2013, 10:46 PM   #1
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HELP ! Hope I'm not Stranded in Ohio Rest stop

Heading back to Colorado, driving in heavy rain & wind, stopped at rest stop in Ohio turned M/H off and after about 10 minutes anti theft device started beeping, then multiple lights started flashing, then ABS Fault flashed on dash computer, shortly after a J1939 communication error, messages began flashing. Turned key on and warning goes off, but wouldn't let me start engine due to my majic start anti theft sensor not working. I disconnected all batteries and was able to start engine, turned it off , seems ok now. I'm leaning towards majic start anti theft system and may disable it. But have another 1400 miles, need to be back to work Monday. Any ideas what to look at in the am would help. I'll check for feed back in the am, thanks for any help

Hope it starts in the AM
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Old 10-31-2013, 10:57 PM   #2
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Just a guess, but it sounds like you may have gotten an electrical connection wet from the rain. You might examine any wiring that is visible to see if you can spot something. I'm not familiar with your particular RV so I can't offer much more advice, maybe someone else has had a similar experience. If it is rain intrusion, hopefully things will dry out enought to get home, and hopefully you can find the problem area.
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Old 11-01-2013, 04:12 AM   #3
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I'm with Dogs.. Rain where you should not have Rain.

Check for damp wires or junction boxes and ASAP dry 'em out and protect from weather better.

A bit like a car I used to own.. One good puddle of rain water and the alternator went off line.
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Old 11-01-2013, 06:28 AM   #4
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Wish I could help! Good luck today! Let us know how you make out.

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Old 11-01-2013, 06:47 AM   #5
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A good shot of WD40 on every connector you can get at.
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Old 11-01-2013, 07:20 AM   #6
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Thanks, I have some electrical component spray will look for connections to spray but really couldn't located anything wet, disconnected Magic Start anti theft system hoping it was the cause, could be just the humidity level effecting it, we'll see what happens, sun is out & clear sky heading west
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Old 11-01-2013, 07:42 AM   #7
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J1939 is the vehicle communication buss. I don't know if the magic start system is connected. I would look for large connecters with smaller wiring that is somewhat exposed.

Most likely you won't see moisture on the outside, it will be inside the connectors if it's causing shorts.
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Old 11-01-2013, 10:56 AM   #8
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I had the same problem last year driving through HEAVY rain. Finally got it running and limped into a Cummins dealer not to far away, WHEW! The main computer box for the engine was soaked and everything cross reading. A $100. to spray the computer box down with whatever they used and everything worked fine. I now pull off in heavy rains, engine computers do not like water.
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Old 11-01-2013, 11:14 AM   #9
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Can Bus

On my Freightliner chassis the connectors are in the second from the rear cabinet on the curb/passinger side.

It doesn't have to be water. Could be a loose connector.
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Old 11-01-2013, 12:35 PM   #10
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Quote:
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A good shot of WD40 on every connector you can get at.
I agree on WD40. Everyone has some.
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Old 11-01-2013, 12:40 PM   #11
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Have you tried using the key fob to unlock the door to turn of security system.
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Old 11-01-2013, 09:28 PM   #12
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All is working fine now after setting overnight , spent some time today looking and spraying connections with electrical drying spray. I will check it out better when I get home, something is getting wet this is the second time this occurred in the rain, happened a few years ago. Computer makes sense if its in engine area, will check all connections. Just can't figure how it turned ignition on after it was off for 10 minutes. Anti theft company didn't think it was related to the Magic Start System.

Thanks for replies
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