Honda Grom ECU & TPS Reset 

I got the iridium plug for mike as well! Anytime and ride safe! 🤘🏻

Do you do the ECU and TPS resets after the DHM ecu was installed? Wouldn’t this clear out the DHM tune? I just got mine tuned from DHM but not trying to clear it out. Or am I missing something??

@@andrewlouderback Instructions from DHM says to do the reset and it won't affect the ECU's new tune. Run it at all RPM's.

I know the feeling lol anyhow if it’s just an exhaust you installed the reset is not necessary

Ask a grom group on Facebook, everyone's much faster to respond and overall always helpful!

Thank you, I am not sure if this procedure would work with your SH. This has only been tested with the first two generations of Honda groms.

AeroR me neither until I purchased my cam and ecu reflash from dhm. It says to reset your ecu and tps and I was like hmmm? Let me try it! 🤘🏻grom squad life🤘🏻

@@FrankiesWorld do you feel any difference, a few miles after the reset's? my mods are DNA air filter, full exhaust and a kitaco side cover so far🤙

AeroR I felt a huge difference just after doing the exhaust and intake. After the cam it was not that big of a difference however it did feel smoother

@@FrankiesWorld when receiving the new ECU from DHM, do I plug it in and then reset the ecu and tps? Or do I reset both BEFORE I plug in the ECU.

@@SimplyKelp you’ll want to connect the re flashed ECU first. Then do your reset.

Yep! When you get the flash back from the company there should be instructions along with the flash telling you to reset the ecu after installing the flashed ecu.

@@FrankiesWorld nice, thanks for the quick reply

That I have no clue to be honest

Sorry, I don’t know if it’s the same exact process.

Maybe your ECU is bad, or not properly inserted if it was removed recently.

I found them laying around the house. I would try ebay or a craft store.

You dont need to do this for just an exhaust. However keep in mind that this method has been tested with OG and SF groms and dont know if it works with the newer groms.

Has to be a closed circuit so that it acts like a jumper

After 2020 it’s different. I would contact the previous owner if you can to find out what mods were done. If it is just the exhaust a reset is not really necessary since it doesn’t require ecu remapping.

These check engine lights can come on for anything, could be also because of a change in parts. I would try redoing the reset. If the check engine light is still on, it may just turn off after riding for a bit. I would also see if you can get the code checked to why your light is remaining on.

I would

Nope. Once it’s reset it will stay that way and relearn itself until you reset it again.

Thanks for the comment. To be honest it all depends on your budget. If you’re on a limited budget, I’d go with the dhm tune. They will load a custom map on your ecu and you’ll be good to go. The only down side is if you do different mods or remove the mods you have to send them your ecu back to get it remapped. That costs a little over $100. If you have the money, I’ve heard a lot of good things with the a-racer tune. It’s much more but it’s also more customizable like the fp3 and has an auto tune function.

@@FrankiesWorld Thanks so.much for the super fast reply i found a company on ebay in florida that offers to flash it but i dont know if its dhm? Im on west coast in norcal ill google dhm right now to see if its closer than the ebay florida option

@@tjmooney4181 not a problem. Dhm is located on the east coast I believe. You’ll know which web site it is. If you email them, David at DH motoring is good at communicating. Email him your bike model and your mods and let him know what you need. He’ll let you know which tune is best. Be prepared because for the lowest cost you ship them your ecu snd when they get it they load the custom map and mail it back to you and the entire process can take over a week. Here is the website www.dhmotoring.com/products/stage1reflash

@@FrankiesWorld Thanks, i realized its dhm on ebay same price of 105 free shipping so ill just do the buy it now and use my paypal for quick checkout and wait for instructions on where to send my ecu. Youve been very helpful im greatful i came across your video 👍🤙

@@tjmooney4181 glad I could help out. Please remember, any questions about the right ecu ask David at DH motoring. He has helped me and others.

Wow! That’s a lot that happened from just replacing a turn signal. Is the turn signal made for groms? Also find out if you need a special relay for the turn signals. Does it all work when you connect the stock turn signal again?

I think the lights I got are for a Vader not a grom, i reconnected the stock signals and still nothing. I looked at a wiring diagram and all the components that stopped working have the same ground point so I think that may be the issue

@@Erikbarbaric yeah sounds like it fried something. That sucks! Let me know if you figure it out! One of my friends has a Vader so I’ll ask him if he knows of anything like that happening.

@@FrankiesWorld someone suggested a blown fuse do you know where those are located

@@Erikbarbaric they should be under the seat

For just an exhaust its not necessary. The ecu will just relearn itself in time. Once you pair your exhaust with an air intake then you'll want to.

Those stupid clip connectors can be a pain in the ass. Try using a small flathead screwdriver. Sometimes that works for me

Try repeating the process. Sometimes you need to try using a different paper clip.

Your flashed ECU will not be erased

Hou Boy I reset mine when the engine was cold.

@@FrankiesWorld okay and after reset do i need to start the bike and let it idle around 15mn - 20mn for ecu to relearn?

Hou Boy I let it idle for 5 min and rode it around but took it easy for the first 20 min of riding to let the bike relearn itself. Same way as when you would break the bike in. Then after that I just rode like normal.

@@FrankiesWorld thank u that really help a lot 👍 i hope the bike run smoother after relearn complete cuz now it runs a little bit rough

Hou Boy for sure I know mine did

That happened to me once, try repeating the process. If you are doing this because you got an ecu flash from dhm, I would contact them if the problem continues.

I wish I had the answer to that

keep trying or use a different paper clip. Sometimes it doesnt make the contact that its supposed to. I have had to try several times before it finally registered.

@@FrankiesWorld What happens is that the clip that I use does make contact, only that it begins to send me only fault codes and I already know all the settings but it does not remain. The worst problem is that here in Mexico they don't sell any spare parts for this motorcycle, even if I detect the clip, do I have to keep trying?

Oh I see..the probably may be elsewhere then if you keep getting error codes. Does your bike ride not as it should even after just the ecu reset?

That I do not know, but I would imagine it may be the same way. I’ve never done it before on the new 2022.

The fuses are under the seat

From what I have heard,..the power commander should be able to take of all those settings the bike's ECU needs based on your upgrades. However doing a reset before hand should be fine without having to do a TPS reset.

It sure is!

Sometimes the paperclip doesnt make contact, try repositioning and try again. If that doesnt work try another paper clip.

If this is true I’ll update my disclaimer. Thanks for pointing it out.

This method should work on an OG grom but I have not tested it on one. Its the newer groms that I have heard have a different reset and flash method.

It forces the bike to relearn any new components you have installed on the bike since the stock ecu is configured for stock components.

@FrankiesWorld my bike has bad throttle response and bad has bad pick up and full throttle at any revs below 8k. I replaced everything

@@jasoncarthew2279 Try doing the ECU reset after you replace the parts. Is this happening after you installed an exhaust and intake?

@FrankiesWorld I did ecu reset didn't change any thing. Basicly my other engine piston rings went so I got a whole engine of ebay compression is fine clutch drags a tiny bit as the bike creeps some times when I hold the clutch in but the revs don't go up nor does the speed if I fully open throttle and if I apply the rear brake a little bit the revs can't keep up to the drag on the brakes. It's like full throttle bog the bike out at any thing below 6k revs

@@FrankiesWorld the other engine I had tho the bike was perfect was a wheelie machine now the bike just doesn't have the pick up and go ti even get the front wheel up a inch

LMAO!

Been working on correcting my audio 😬 🤙🏻