Toyota MMT BIG problem

[dariobmw]

Good morning i need help from a good toyota expert , i bought a toyota corolla with MMT transmission
and the clutch fried , after some time the car was on my garage a friend told , sell to me that .......
and now the problem started !
i detached the battery and changed the clutch , start the car ( from here all ok ) and a not good clutch
release was the first symptom (the car before run good but the clutch slip from all gears but no errors
on dash ) .
So the intention was to make a adaption to the clutch actuator (like the smart) and with the diagnostic
connected ,after the adaption the N on the dash disappeared OMG !!!!!!!!!! no more clutch no more
gear actuator no more rpm over the idle , the strange is on the dash NO LIGHT ON but no N too .
Now the car is a good ornament , and annoying to move .

1st question WHY THE N DISAPPEARED ?
2nd how can i make the car run again ?

Please no answer to take some petrol and burn because i a big temptation !

[sherl645]

These are a pain. What equipment are you using? The N disappeared because it lost the gearshift adaptions when you tried to learn the clutch. You now need to program the clutch and the gear shift actuator. Sounds easy but it isn't simple to get them to program.

[dariobmw]

Thanks for reply , i try some times to re learn but no more clutch or gear shift actuator move .
The equipment for the 1st try was a texa axone 4 and then i tryed with a X431 and manually with the
13 - 4 pin procedure but no luck !
Now im lost with this stupid problem (take a look the car has no one error in all modules)
Probably i wrong something but with the manual procedure no buzzer sound from car after the 7 foot
brake depress ................. i think im too dumb for make this car run again !

[bobolin4o]

First of all i suggest you to pull out your head from your ass... Cool down, it's a joke of course...
I don't think there is a problem with the adaptation procedure, may be is a problem with mechanics (bad clutch, bad mounting...)
Look again at the assembling. Inspect the connectors etc.
Cheers!

[dariobmw]

Thanks for reply , (my head is there for concentration is the quite place i know ) after finish the reassembling the car was on the street for about
5 / 6 km and good running but on start the clutch was like a 80 years man driving , so i make the adaption and now is the problem !
i think i look for any kind of error or damage but the car was fine before the adaption

[jakesman]

first time i see this so no comment but this is my 2cent to add
http://www.blue-print.com/mmt/INF134...65_266_274.pdf

[nono94]

i just changed my clutch on my toyota yaris diesel MMT
i know it s been quite a long time and i hope you managed to fix your problem
Anyway... it was a real nightmare, and i had the N disapeared of the dashboard too .
i ve first thought it was the actuator problem... so i dismantled it to clean it and add some grease ...
but the problem was still there... so after lots a research ... i have tried lots of combination (i did it with a wire... not the computer tool)...
even now i still dont know the exact procedure ...but i can assure you that your actuator and the MMT ECU are fine
it is normal that the initialisation of mmt ecu make the N disappear.

First... i have extended the rod on the actuator (just dismantle the motor and use a screwdriver )
then i loosed the 3 screw that fix the actuator on the gearbox.
after that i have used the method that is meant for the toyota corolla... (which have one more step ... initialisation of transmission)
then the N reappeared... but then the N was a flashing N
and no gear was available.
that s where i don't really know what i did... i think that i just switch off the car (when you switch off the car it seems that the actuator is set to adjust it self ...) and then tighten the 3 screw ,(or maybe i did another initialisation procedure ?) well i cant remember very clearly as i did it so many times with so much variations ... just try everything and do not loose hope

Hope this message will help other people that are trying to fix their mmt clutch as there isnt lots of info on this

[vasko]

toyota yaris mmt
toyota 89530-52160
aisin 324811-11660
and toyota 98530-52162 aisin 324811-11662
learned dump works for 2 ecus
ecu behind dash....
free for all

[vasko]

when eeprom in gearbox corrupted car run at idle...remove plugs start car and run perfect...
tested many times

[dave44694]

I have the same problem tried the toyota corolla method and still cant get the n to reappear if anybodys got any ideas im all ears thanks

[vasko]

for toyota corolla
89530-12220
100% work
write dump and learn with launch or kts

[shailinb]

Hi Dariobmw,

I am having the same problem after changing clutch. No indicator on dash and only idle, no throttle response. Something went wrong during initialization.

Did you ever get your clutch fixed? If yes then how?

I looked at the nono94 method, but the corolla has a different actuator then the corolla (with two servo motors).

[shailinb]

for toyota corolla
89530-12220
100% work
write dump and learn with launch or kts

Hi Vasko, Thanks for posting the dump, but how do I get it onto the MMT-ECU?
I have a cheap chinese OBD-USB (cloon) cable. Can I acces the MMT with this cable and my laptop? What else would I need?

[shailinb]

Hi Vasko, Thanks for posting the dump, but how do I get it onto the MMT-ECU?
I have a cheap chinese OBD-USB (cloon) cable. Can I acces the MMT with this cable and my laptop? What else would I need?

Hi Vasko,

I Found someone who loaded the de EEprom onto the MMT-ECU. The "N" Reappeared. Great! Thanks for the eeprom, you are a genius.

Now I started initialization using the Bleu-print manual. The manual has 5 steps:
1) Clamp position
2) initialize MMT
3) initialize clutch
4) System learning
5) position calibrating

I started with step 2) but already in this step the "N" disappeared again.
So again EEprom loaded and "N" reappeared. Trying the put shift in gear (without initializing again) makes the "N" flash with red wheel light appearing.
When I turn the car off and after 30 second on again the red light turns off and "N" is not flashing, but still will not go into gear. It will flash again. b.t.w. gas is in this fase responding.

All plugs etc. are ok. Also the U0100 - OBD code got solved when flashing eeprom.
Now what to do?
Could it be that I have to skip some steps of the initialization process. Perhaps loading eeprom is same as step 2) and shall I then start at step 3)? Nothing is happening when trying step 4).

Hope you can help with follow-up step. Thanks.

[cheinikas]

have same problem here. dump doesnot help. any ideas?