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GeorgeT

2001 Honda Foreman 500

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Ok guys. So today I started having trouble with my display flashing when riding. The Left side where the gear is displayed will go to flashing. Then I can't change gears. I have to stop shut the engine off and turn it back on and the display will come back up like it should be.. Well that is not all that is happening. When I go to reverse and start backing up the engine starts skipping. as soon as I go back to drive it runs fine. This only happens when the display is fricking out. I knew when I got this bike I was going to have trouble before it was over. Should have got a plain jane old style ATV and been happy with it. Anyways someone give me some pro help with this so I can get it fixed and back to riding.

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Welcome to ATVHonda .... I would guess your 500 is a Hondamatic model ? I don't have one personally , have read the oil level is critical on them ,  as far as that reverse issue you having ---- on the flashing display problem , have you disconnected electrical connections , checked for corrision and dielectric greased them yet , seems that is always the first step ----

 

we have a few guys that know about them Hondamatics , @toodeepand @jeepwm69 just hailed them for you

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Foreman electric shift or Rubicon automatic (year would be helpful also)? If there is a pause in the flashing count the number of blinks and that is a code.

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Oh man sorry I thought I put the year on it. it's a 2001. It's just a fast blink none stop. 

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Welcome to ATVHonda @GeorgeT! So ya got a 2001 Rubicon 500 Hondamatic. The electronic shift control has self-diagnostics built-in. So your first step is to retrieve any diagnostic trouble codes that may be stored in memory. Fortunately reading DTCs is pretty easy on your model, just count the long & short blinks on the display while in retrieval mode. Here is how ya do that.

 

rubi-code-retrieval.png

 

Let us know which code(s) you retrieved.

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Thanks Retro. I am heading out to the shop and see if I can pull some codes now. 

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1 hour ago, GeorgeT said:

Oh man sorry I thought I put the year on it. it's a 2001. It's just a fast blink none stop. 

You did put the year on the title , so many times I over look the title myself , wish people would put the year and model on the first post , sure toodeep did too 

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On 4/17/2021 at 7:07 AM, GeorgeT said:

. When I go to reverse and start backing up the engine starts skipping. as soon as I go back to drive it runs fine.

 

That's likely going to be something with the two switches for reverse. One's on the bottom of the shifter, the other is the actual gear position switch.

 

If you have a functional brain, you could always do the reverse mod which tricks it into thinking it's in forwards while mechanically being in reverse.  Gives you full power/speed in reverse.  We did it to @basfnb's Rubicon and he loves it.

 

Of course, quick way to get hurt or killed if you don't have sense, or let someone without sense ride your Rubicon, so do this mod at your own risk!

 

https://www.hondaforeman.com/threads/honda-rubicon-reverse-mod.80360/#post-625421

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Ok guys little update on what was going on. Took me a few days to find the trouble but I found it..... After letting the bike set for two days the battery was completely dead. So I charged it back up and did a draw test on the bike to see what was going on. sure enough it had a big draw on the battery. after pulling all the fuses trying to find what was drawing power off the battery I still did not know. So the next thing to do is start unhooking stuff so I started with the regulator. As soon as I touched it to take the plug off it burn my hand. HMMM there it is. So I took the battery cable off let it cool for a few mins and took the regulator off. I call the Honda shop and got a new one on the way. Now the battery is holding up. The voltage is where it should be and all my shifter and flashing dash is gone. All this for low voltage.  Sure am glad this is all it was. Thanks for all your help and time. 

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Thanks for letting us know what you found GeorgeT! Have fun!

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Ok Guys the trouble is back, This happen yesterday while riding. I pulled the codes on it and I have a #2 code and a #5 code. I have replaced the angle sensor did not help. The #2 code is a speedometer code and I know mine works some times and then quits working. the shifter code I might need help with. Like I said just changed the Angle sensor and it's still doing it. What's next to look at 

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1 hour ago, GeorgeT said:

 What's next to look at 

Retro's ES   preventive maintenance thread first , then a " For Sale Sign " LOL 

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4 hours ago, GeorgeT said:

I pulled the codes on it and I have a #2 code and a #5 code. I have replaced the angle sensor did not help. The #2 code is a speedometer code and I know mine works some times and then quits working. the shifter code I might need help with. Like I said just changed the Angle sensor and it's still doing it.

 

You'll have to fix that speed sensor issue to get it to shift. The first step though, before any further diagnosis or work, should be unplugging every electrical connector on the ATV, cleaning them with electrical/contacts spray and dielectric greasing every one generously before snapping them back together. You'll have to take both fenders off in order to access them all. Be careful with the ECM connector while unplugging it and plugging it back in (don't bend any pins on the ECM), but do not skip cleaning the pins & connector sockets and dielectric greasing. Odds are that dielectric greasing of every connector will fix the speed sensor and possibly the angle sensor issue too.

 

Next thing I gotta warn about before diagnosis is that all electrical parts must be Genuine Honda parts. If you have any china knockoffs on your Rubicon you'll have to replace them with OEM parts, else you'll never fix anything. So if your new Angle sensor is not a Genuine Honda part then take it off and throw it in the garbage. Put the OEM angle sensor back on it (with connector dielectric greased) for the initialization and diagnosis steps.

 

Once ya got every electrical connector prepared and have OEM Honda parts on it you'll need to initialize the system. Follow the initialization guide below exactly, the list of DTCs are included for reference. Let us know if there are any issues remaining after....

 

01-03-dtc.png

 

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