I Destroyed MC Gearbox ECU in my GT

Tomevo

New Member
Messages
2
Hi guys, I am the new owner of a MC stradale EU 2011 and I am solving the same problem as on this forum. After about a week of parking, I started it, drove out of the garage and turned off the ignition. When starting off, I felt that the clutch was engaging too high, only at about 1800 rpm, but I did not pay attention to it. After about ten minutes I wanted to start it again, but it was no longer possible. It remained in 1st gear and "gearbox unavailable". After connecting Launch diag, no faults, clutch life 75%. The only problem was the battery life 20%. I bought a new battery and tried to "play" with the diagnostics. I could not complete the gearbox settings, when 5-6 gear ended with "failed". Unfortunately, I also ran DEIS with the same result. I tried to connect my TCU to my brother's GT-S F1 and again "transmission unavailable"
I have a friend who repairs control units of various car brands, but he does not have the necessary software from a working EPROM. I do not know anyone who would be willing to provide this software. So I bought a used TCU from a MC stradale 2011 on eBay, unfortunately the Japan version. I have a question?
Is it possible to use the TCU MC str.-japan to MC str.-EU ?...or software from EPROM?
Tom
Czech Rep.
 

cheburator

Member
Messages
197
Hi guys, I am the new owner of a MC stradale EU 2011 and I am solving the same problem as on this forum. After about a week of parking, I started it, drove out of the garage and turned off the ignition. When starting off, I felt that the clutch was engaging too high, only at about 1800 rpm, but I did not pay attention to it. After about ten minutes I wanted to start it again, but it was no longer possible. It remained in 1st gear and "gearbox unavailable". After connecting Launch diag, no faults, clutch life 75%. The only problem was the battery life 20%. I bought a new battery and tried to "play" with the diagnostics. I could not complete the gearbox settings, when 5-6 gear ended with "failed". Unfortunately, I also ran DEIS with the same result. I tried to connect my TCU to my brother's GT-S F1 and again "transmission unavailable"
I have a friend who repairs control units of various car brands, but he does not have the necessary software from a working EPROM. I do not know anyone who would be willing to provide this software. So I bought a used TCU from a MC stradale 2011 on eBay, unfortunately the Japan version. I have a question?
Is it possible to use the TCU MC str.-japan to MC str.-EU ?...or software from EPROM?
Tom
Czech Rep.
Yes you can use the Japan version. Ad far as I am aware it's the same.

One last try - put your original TCU in your car. Pull both paddles towards you to get the car in neutral. Start the car by bridging the starter relay, wait till car warms up. Shut her off, Now try and run DEIS. Success rate has been reported to be around 60%...
 

Tomevo

New Member
Messages
2
Today I took both TCUs to create an EPROM backup. Then I will try for JP If it works I will be the happiest person in the world :))) and the community will have a working software for MC stradale.
Anyway, it's a good idea to start with a start relay. And the engine starts even with the message "gearbox unavailable" ?
 

cheburator

Member
Messages
197
Today I took both TCUs to create an EPROM backup. Then I will try for JP If it works I will be the happiest person in the world :))) and the community will have a working software for MC stradale.
Anyway, it's a good idea to start with a start relay. And the engine starts even with the message "gearbox unavailable" ?
it should - but obviously needs to be in neutral. By bridging the starter relay, you are effectively bypassing the TCU which is stopping the starter relay being energised and getting the engine started.. Keep us posted please on progress...
 

strictly

Member
Messages
229
it should - but obviously needs to be in neutral. By bridging the starter relay, you are effectively bypassing the TCU which is stopping the starter relay being energised and getting the engine started.. Keep us posted please on progress...
Cool tip! Out of curiousity where is the starter relay and what does DEIS stand for?
 

gorsteve

New Member
Messages
18
I have just hit this same problem! Why oh why did I touch this. List of contacts/garages that were able to assist would be a god send.
 
Last edited:

strictly

Member
Messages
229
I have just hit this same problem! Why oh why did I touch this. List of contacts/garages that were able to assist would be a god send.
What actually happened? You tried a gearbox relearn or PIS change and it went wrong during the procedure? If so what diag tool did you use?
 

gorsteve

New Member
Messages
18
The car has not been going into reverse first thing in the morning only, said gear not available but after warming up eventually will. The garage asked me to get the speed of the main shaft as this should be zero and they wanted to check that, so using the Launch X431 was able to access this info, I also read out the clutch values and the PIS out of interest. Went to start the car and now it won't start and says gear unavailable, I did not write or change any values to me knowledge, I've only had the car a few weeks and that aside it's been great.
 

Zep

Moderator
Messages
9,785
Where did you get your X431? What is the firmware version?

There are lots of reasons why you might get gear unavailable and no start, so don't panic just yet.
 

Zep

Moderator
Messages
9,785
If it is new, and up to date, its unlikely to be the cause. Are there any fault codes?
 

Zep

Moderator
Messages
9,785
Can you select a gear without starting the engine? Foot on brake and then pull the right hand paddle.
 

gorsteve

New Member
Messages
18
Can you select a gear without starting the engine? Foot on brake and then pull the right hand paddle.
No. I pressed 1 and R and 99% tried the right paddle, got message that gear was unavailable. Back inside now as cold and dark.