[NickTheTrick3]

What's up, new here because of this issue. This thing has been breaking every time I ride it this summer. I just got finished replacing the final gear/rear diff., axles, fixed two current draws, and I replaced the exhaust. To replace the exhaust, I took the seat and the framing for the seats out, and I think it's related.

CURRENT ISSUE: As soon as I start the machine, the check engine light begins flashing, and it's telling me that it's overheating. I know it's not overheating within a second; it's just impossible, even if it is 95+ and 100% humidity. I did have to unplug the temperature sensor right beside the spark plug and remove that entire harness, to remove the seat framing and stuff. I don't see any broken wires or anything. I am an automotive technician, but I have no resources with this machine, no wiring diagrams or tech information. Can anyone point me in the right direction or help me to test the sensor? Does it work like an old two-wire temp sensor on a car/truck? Or is it completely different? It's only a two wire sensor. Please Help. I'm trying to get rid of this thing, because it's a money pit, but I want to make sure everything is copasetic, before I sell it.

 

[Mark in Northern Iowa]

Howdy and welcome from Northern Iowa
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For any forum, year, make and model would help us help you.
Here is a link to a 2105 Service Manual, should help with your troubleshooting.

2015 SXS 500M2 Pionneer Service Manual.pdf

Shared with Dropbox

www.dropbox.com

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First best guess, is that you bent, possibly broke, one of the sensor pins when you plugged it back in.
Unplug it and look inside.
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Have a good day

 

[NickTheTrick3]

Sorry, it's a 2017 Pioneer 500. Thanks for the info.

 

[NickTheTrick3]

2017 Pioneer 500. Could really use some help on this guys. I've checked the wiring, visually. I haven't tested the wires for continuity, but I don't see where any of them have been pinched or rubbed or anything.
SYMPTOM: As soon as I turn the key to the on position, the fan immediately kicks on high, the overheating light comes on, and the check engine light begins flashing. I tied the leads together to try and maybe clear any memory issues, no luck.

1st post has backstory

 

[Mark in Northern Iowa]

wait a sec, I skipped over that earlier.
You said the check engine light is flashing?
You can not clear an active code.
Count the flashes, that should lead us to the problem.
That Service Manual I posted earlier should help.
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Have a good day

 

[NickTheTrick3]

I am a bit unsure of the code. The light flashes 1, 7, 8, 9 repeating. There is no break or pause that I can tell. It’s just that pattern over and over. I know with older cars, it will flash a number to indicate a break in the codes or a restart of the list, with noticeable pauses between codes. This was not like that. It’s just 1, 7, 8, 9,

 

[Mark in Northern Iowa]

I agree, that is a weird flash code.
Post a video of it, maybe we will see something that you do not.
YouTube is free, upload the video there, and post the link here.
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For the video, start recording the dash, and then turn on the key.
The more we see, the better we will understand.
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As an example, here is a thread where the video showed more then I could see.
I had a power drop out issue, and the video I recorded led me to the problem

Power / Speed drop out but not die

I didn't want to post about this until I figured out the problem. . At random times, random speeds, random temperature, random terrain, and NO codes. My Honda would just bog, no throttle, and speedometer would flash. My first thought was injector wires. So I ordered them and now have them on...

www.hondapioneerforum.com

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From what you describe though, I still think the problem has to be somewhere in the temp sensor wiring.
Not only because of the symptoms, but because that is what you took apart.
It didn't have this problem before, so it has to be something you physically touched.
If positive there are no pinched wires, unplug every plug that you touched before and check the pins.
Sometimes when you plug them back in, it'll push the pin inside, and not make contact.
Had it happen just the other day on a Freightliner I was working on. Them light housing plugs just suck. haha
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I did look at the schematic in the manual I posted a link to above. If you zoom in a little, it is very readable.
Good luck
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Have a good day

 

[NickTheTrick3]

Sorry I let it set for a while. I went ahead and replaced the sensor, and it did nothing. But then I found a chafed wire around the frame. Thanks guys.

 

[jmbcj62]

Sorry I let it set for a while. I went ahead and replaced the sensor, and it did nothing. But then I found a chafed wire around the frame. Thanks guys.

 

[jmbcj62]

@NickTheTrick3 was reading your post because I have the same problem!!! Mine is a 2016 500. Did replacing the chafed wire solve the issue on yours?

 

[Mark in Northern Iowa]

Howdy and welcome from Northern Iowa to @jmbcj62
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He has not been back on since saying that was what he found.
Try the search bar first, and then you really should start your own thread.
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Sometimes it takes pages and pages to walk someone through to the end final fix.
With all of the information in one thread, it is easier to scroll back up to see if something has already been tried or tested.
- Include all vehicle information that you can think of:
(year, make, model, how long have you had it, do you have a heater, where is it installed?)
(dual battery system, have you swamped it?)
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- Include all that you know about your problem:
(what rpm, what speed, what gear, what temp, dash flash codes?)
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- Include all that you have done to try and fix your problem.
(load tested the battery, reset the computer, cleaned the shift control motor?)
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The more information you provide, the easier it is for us to help you find and fix your problem.
We are not there. We can not touch your equipment.
It is like telling someone how to do an engine overhaul, through the exhaust pipe. haha!
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Good luck with your search and Have a good day

 

[jmbcj62]

@Mark in Northern Iowa thank you sir!

 

[Mark in Northern Iowa]

haha, sorry, but I can't resist posting this.
It popped in my head after reading what you posted.
It's an Army thing.

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hahahahahahahahahahahahahahahaha
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Have a good day