Moto guzzi v9 Ecu bricked?

[Bertil]

I saved the .bin from my guzzi v9 2016, then i switched off the lambda’s with tunerpro and tried to write it back.
The original bin file got erased and the upload started but at almost the end the starterengine suddenly started turning so i turned of the Ignition switch. Realising something went wrong i tried to write the original bin file back but No connection is possible because everytime i switch the ignition to ON the starterengine gets activated. What can i do?

[n3303j]

Disconnect the starter?

[Bertil]

Done that but now can’t get connected.

[Tom H]

I found this some time ago. I don't think it's you ECU model, but it might help if your is bricked:

From Ed AF1
"one trick I know of on the Aprilia 7SM and using GD is to go into the GD writer,

go in and start to write a new map to the bricked ECU...pick any map, doesnt matter

The trick is to ignore the key on, off instructions.  Have the key off, until after you start the writing process (after clicking all the oks to start it).   Then turn on the key, and that seems to connect to the ECU in boot mode right when it gets power, and starts a fresh delete and re-loading of the map.  A fresh full reload is all it needs to be fixed."

Tom

[Bertil]

Hi Tom,
I have tried this. First write, ignition on then OK, second time, write, OK, ignition on. And a third time, ignition on, write OK.
The writer says ignition is off. So no connection.

[Tom H]

You might try checking your fuses, unlikely, but maybe? Is the kill switch set to run? Been there.

Tom

[Bertil]

Fuses OK, kill switch OK.

[Bulldog9]

Reach out to Beetle. If anyone will know he will.

[Ncdan]

^^^^
+1 with contacting “guzzi or death” (beetle)

[Bertil]

How do i contact Beetle?

[Bulldog9]

Hoe do i contact Beetle?

Go to Griso.org, his e-mail address is there.  Mark is a great guy.

I'm not an expert, but having used GD with all the reader and writer tools for the last 10 years, I'm pretty sure the system will backup the old map/bin file before writing a new. You also had to read and download the stock map before you modified it with Tuner Pro. Are you sure there is not a copy? Check the folder with file manager.

If you truly do not have a stock map/binfile, I bet Mark (Beetle) or someone on the forum has one and can send it to you. I only have maps for a V7ii, V7iii, and several CARC bikes.

Always a good idea to keep a copy of the stock map, or if you make changes, save the new file to a different name. I messed around with Tuner Pro, but didn't try to modify one myself and use it. The maps are specific to the bike. When I started with my Norge, we tried a Stelvio map and a Griso map thinking because it had the same basic ECU and systems it would work, but no dice.

If I'm reading correctly, when you tried to upload the new map the engine tried to start on its own?  That sounds almost impossible to me, as the map and starter circuits are completely separate, but....

If I were in your shoes, I would:

1. Disconnect BOTH battery leads and connect them. Then while connected turn the ignition key on to completely clear out the ECU.
2. Reconnect battery and connect Guzzi Diag and load the original or the stock V9 Map with the "Writer" Program.
3. Clear learning parameters and reset TPS.

That may get you going, I've never heard of someone bricking the MUIC3 (or whatever ecu the V9 uses). I have heard of the 1400's getting bricked, but anything is possible.

Be sure to keep us posted.

[Bertil]

Hi Bulldog9,
That’s correct, at the end of the upload the engine started on it’s own! (No ignition, only starterengine turned). I didn’t even have to click OK!
I have downloaded the original map so that’s save. Gonna try the procedure you wrote down, I Will keep you informed.

[Bertil]

I did al the things you wrote down, still no connection possible. Guzzidiag says “turn ignition on” but ignition is allready ON.
So it’s impossible to reload the original map.

[Tom H]

One more thing I would suggest. Try another computer to connect to the bike. With GuzziDiag, I will sometimes not be able to get connected to a bike, try a different bike and all is fine. Go back to the first bike and still can't connect I also have a OBDStar tablet and it would connect to the bike GD wouldn't. I do not understand why this happens.

I also am wondering about the bike cranking over on it's own, I thought I read it wrong.

If Beetle can't help, there is a company called UpMap or the like. They sell a device that connects to the bike and up/down load a new map that they provide. I don't remember the price. "Maybe" it would connect??? Do a search here for the device.

EDIT: Will GD or the reader connect? If either will, you might try reinstalling the writer program. BUT....FIRST save your original map to somewhere that it will be safe. I believe the reader stores the map in it's folder that the reader creates when you install it, not sure. Then reinstall or delete the writer and do a fresh install.

Tom

[Bertil]

I have reinstalled the writerprogramm and the ftdi driver, no connection.
Have asked Beetle for support.

[Bulldog9]

You may have to go into the settings and change the com port. Also, make sure you have the right ECU selected from the menu options. Otherwise there's no way you'll get it to connect.

Are you using an apple demon possessed laptop? Or a Microsoft product?

I know it's possible to connect with an apple product, but most people have problems with them.

[Bertil]

I have used a Mac. This worked perfectly untill now.

[Bulldog9]

I have used a Mac. This worked perfectly untill now.

Can you get Guzzi diag to connect? Try with that and the. Ensure the writer program is using the same port.

Dumb questions, but have you tried to start the bike? Is it possible you bumped the starter switch?

[Bertil]

No connetion with guzzidiag or writer/reader. The bike won’t start, probably no ignition. Starterengine turns after key on ignition.
I don’t think the map and startercircuit are separate.

[Bulldog9]

No connetion with guzzidiag or writer/reader. The bike won’t start, probably no ignition. Starterengine turns after key on ignition.
I don’t think the map and startercircuit are separate.

Well, the GD won't connect unless the key is on and the kill switch is set to run.

You're saying that as soon as you switch the key to on, the starter engages? It sounds like your Starter Relay is stuck, or the ECU is stuck on sending a signal to engage the starter.

FWIW, as I understand it, the starter switch sends a signal to the ECU to trigger the Starter Relay. Are you sure your starter switch didn't get bumped or is stuck? Take the relay off and give it a smack/tap, try a known good, or just leave unplugged and proceed with getting GD connected with the right COM port. Once you do that, use same settings for the writer. It will automatically wipe what is there and then upload the new bin file.

What do the gauges/lights do? Does the Fuel pump run/cycle? Or do you just shut it off right away? Once you pull the starter relay you will be able to diagnose better.

It is likely that whatever you did to the Map in Tuner Pro buggered it to tell the ECU to start the bike, and shutting off the key before new map upload was complete just made it worse. Key for you is to get reconnected to the ECU if possible.

I would:
1. Pull the Starter Relay, turn on the key on and try to connect to GD. 
2. Or, leave the relay in place and let it do its thing. If it starts, let it, and then shut down as normal with kill switch then ignition switch. If not, I would engage the clutch, put the bike in gear and deploy the sidestand. This SHOULD kill the ignition/starter circuit. This may be enough to clear the glitch.

In my mind (scary place) leaving everything on and trying to find the right COM port is key. You may have had it right in the past but mine will switch around. NO known reason why GD does that. Try all COM port options to connect GD.

If successful, then use the same settings to connect the writer and try to overwrite. It normally will delete/clear whatever is there, then upload the new map/bin file.

Also, VERY important, make sure your battery is fully charged. I leave my tender/charger attached when I use GD.

Keep us posted!

[Bertil]

Bulldog9, I think you’re right saying the ECU is stuck on sending a signal to engage the starter. That’s why i can’t get connection with Guzzidiag.
I’ve contact BEETLE and he advised changing Com Ports etcetera alternatively find a tuner who has gear to write a new map.
Thanks for support!

[pauldaytona]

The V9 has miug3 ecu.  I've done at least 50 map updates to these ecu. Now look in the folder from where you have started the writer software there you find a log file filename like IAWMIUG3Writer_V0.0 6_20250930_124211.l og  You will find more, but the oldest one is the one where it went wrong. Copy the contents in your reply. And send me the original bin file you have downloaded from the ecu and the one you have altered.

Email: pauldaytona
at gmail.com