Itb12-027 7at important update.
Thread Starter
Registered Member
iTrader: (9)
Joined: May 2010
Posts: 3,613
Likes: 117
From: Granada Hills, CA
Itb12-027 7at important update.
For those who were told by the dealer there is no update for your car, and you never had the ITB10-075 done, theres hope.
Most likely the tech used a Consult III+ cable, which reported no update.
The dealer needs to use the Consult III cable to update to ITB10-075, which give you an interim ECM and TCM update.
Then use the Consult III+ cable to do the ITB12-027.
Those of you that had the tech use a Consult III cable, received an update, the ITB10-075!!! Then you were sent home, thinking all was right in the world.
If you already had ITB10-075, and the tech used a Consult III cable, they would tell you there's no update. Then you were sent home, thinking all was wrong in the world.
If you already had ITB10-075, and the tech used a Consult III+ cable, they updated to ITB12-027 . Then you went home knowing all is right in the world!
I ran into this today, I was given the TCM update, but when I hooked up my UpRev to see if the ECM ROM changed it did!! But the ECM update had a number that showed needed the update on ITB12-027.
In short the Consult III saw my original ECM ROM, and update only to ITB10-075, because its an older cable.
Theres a bug in the Consult III+ cable that will not see updates for original ROMs.
I was lucky enough to have a service advisor, and tech that didnt think I was crazy!!
Confused yet.
Oh, yes, If you get the right version, it shifts nice and firm, paddles are a little quicker, you lose revmatching in D mode, and rev matching in DS is now so smooth!!! No lag at all when making a left from a stop against traffic!!!
Downshifts during WOT now actually put you directly into a gear where youre in the middle of the power band.!!!DOMO
LASTLY:
If you have your current ECM ROM revision, enter it in the linked page.
If an new ROM shows up, then you did not get the latest update.
go here, enter your ECM number.
If it shows a new ROM available, that update will have the latest ECM, and TCM software.
http://www.nissan-techinfo.com/ecm07.aspx
http://www.infiniti-techinfo.com/ecm07.aspx
.
Most likely the tech used a Consult III+ cable, which reported no update.
The dealer needs to use the Consult III cable to update to ITB10-075, which give you an interim ECM and TCM update.
Then use the Consult III+ cable to do the ITB12-027.
Those of you that had the tech use a Consult III cable, received an update, the ITB10-075!!! Then you were sent home, thinking all was right in the world.
If you already had ITB10-075, and the tech used a Consult III cable, they would tell you there's no update. Then you were sent home, thinking all was wrong in the world.
If you already had ITB10-075, and the tech used a Consult III+ cable, they updated to ITB12-027 . Then you went home knowing all is right in the world!
I ran into this today, I was given the TCM update, but when I hooked up my UpRev to see if the ECM ROM changed it did!! But the ECM update had a number that showed needed the update on ITB12-027.
In short the Consult III saw my original ECM ROM, and update only to ITB10-075, because its an older cable.
Theres a bug in the Consult III+ cable that will not see updates for original ROMs.
I was lucky enough to have a service advisor, and tech that didnt think I was crazy!!
Confused yet.
Oh, yes, If you get the right version, it shifts nice and firm, paddles are a little quicker, you lose revmatching in D mode, and rev matching in DS is now so smooth!!! No lag at all when making a left from a stop against traffic!!!
Downshifts during WOT now actually put you directly into a gear where youre in the middle of the power band.!!!DOMO
LASTLY:
If you have your current ECM ROM revision, enter it in the linked page.
If an new ROM shows up, then you did not get the latest update.
go here, enter your ECM number.
If it shows a new ROM available, that update will have the latest ECM, and TCM software.
http://www.nissan-techinfo.com/ecm07.aspx
http://www.infiniti-techinfo.com/ecm07.aspx
.
Last edited by TVPostSound; Jul 31, 2012 at 01:13 AM.
Thread Starter
Registered Member
iTrader: (9)
Joined: May 2010
Posts: 3,613
Likes: 117
From: Granada Hills, CA
The dealer telling you they did the ITB12-027 means nothing.
They have no idea which ROM belongs to which update, I had to do the research.
Read your work order, and see which ROM version your ECM was brought to, if it's on the ITB12-027
ROM list, then you have ITB10-075's ROM.
They have no idea which ROM belongs to which update, I had to do the research.
Read your work order, and see which ROM version your ECM was brought to, if it's on the ITB12-027
ROM list, then you have ITB10-075's ROM.
TVPOST - so your saying it depends on which Consult III they use?
...I just had my car at the dealer for the first time since buying new in March 2011. They performed upgrade, and paperwork shows ITB10-075A.
??
...I just had my car at the dealer for the first time since buying new in March 2011. They performed upgrade, and paperwork shows ITB10-075A.
??
Ok, I'm not quite following the OP, but I had the ITB10-075A done last year so I'm assuming if the dealer checks out ITB12-027 and says they did update it does that mean I'm good, or should I still check my ECM via the links provided? How can I check what ECM I have (after the update of course)?
Registered User
Joined: Sep 2012
Posts: 6
Likes: 0
About a month ago I brought my 2010 g37x in and stated I had transmission issues. They updated to 075a. Recently I tried bringing a printout of the 027 tsb and this thread to them and they were positive the 075a was the most recent update, stating 027 was probably just the US code for the same thing (I'm in Canada)... not sure how to approach it now... as they seemed nice about it and i'm sure they connected my car to the system.
Thread Starter
Registered Member
iTrader: (9)
Joined: May 2010
Posts: 3,613
Likes: 117
From: Granada Hills, CA
Dealer couldn't find an update with the consult III+, so they used the consult III cable, which showed the early update, and did it. I then suggested they use the consult III+ cable after, it then showed the new update.
Trending Topics
Thread Starter
Registered Member
iTrader: (9)
Joined: May 2010
Posts: 3,613
Likes: 117
From: Granada Hills, CA
Registered User
Joined: Dec 2010
Posts: 91
Likes: 0
I had 027 installed on my '11 G37X yesterday. Totally pleased with it so far.
The "sluggish" feeling of the car is completely gone. Haven't had any lag or severe downshifting while coasting. Feels very responsive as it just takes off now.
Glad I finally got this done.
The "sluggish" feeling of the car is completely gone. Haven't had any lag or severe downshifting while coasting. Feels very responsive as it just takes off now.
Glad I finally got this done.
Registered User
Joined: Dec 2012
Posts: 4
Likes: 0
I'm going to make a BOLD statement here based on initial test data that ITB 12-027c and latest TCM is not for everyone.
Had my 2009 G37X coupe updated today and my initial impression after leaving the dealer was the car was definitely smoother, but that is where the benefit stops. My thesis is the update detuned the transmission/torque converter and potentially the engine. What I noticed was excessive and floating RPMs that did not match the performance I was used to. Meaning the RPM goes up with substantially less energy going to the drive train. It is like the torque converter is bleeding off energy prior to the transmission. This makes sense – let me explain.
In the original computer program, the rough downshift is a result of a limited loss of energy between the transmission and the engine via the torque converter. With a tight system or direct drive, there is limited loss of energy. Consider a manual transmission for example. When the clutch is engaged, there is no loss of energy transfer from engine to transmission. Smoothness in a manual (when the engine RPM does not correspond to the correct wheel speed for gear selected) is obtained only with the slippage of the clutch. Also, the posted accel lag from the original computer EPROM is due to the same predominant direct drive setup.
My initial tests conclude the RPM is going way up with no associated thrust. In fact one test resulted in a sudden RPM accel from 4K to 6.5K with no associated thrust – runaway engine. It was like the transmission went into neutral. Several test runs from various start points (0 to 45, 0 to 60, 0 to 80, 45 to 60, etc.) all resulted in RPM runaway, albeit the down shifting was very smooth due to the same torque converter bleed off. The shifting actual stayed in the 3K to 4K range with a mushy needle.
The Dealer claims the update is not for everyone. It is only for those who complain of the rough down shifting. He further explained there are many factors going into the decision to update EPROM or not. He cited how intelligent adaptive learning system works and said you could line up 9 cars from 9 different drivers and they would all drive differently. So it depends on how you drive or how you want it to drive. They have actually seen many cars come back running terrible due to slow driving habits. They reset the learning system and they run fine. There are more issues involved than just the ITB 12-027c or previous mentioned versions
Therefore, the decision to update depends on how you drive or want it to drive. That is why it is not mandatory and only used when the specific performance does not meet the customer’s expectations/desires.
If you drive slow most of the time, maybe the de-tuned EPROM is for you. But for me, I want the old program back. So back to the dealer I go to get my old EPROM back.
Had my 2009 G37X coupe updated today and my initial impression after leaving the dealer was the car was definitely smoother, but that is where the benefit stops. My thesis is the update detuned the transmission/torque converter and potentially the engine. What I noticed was excessive and floating RPMs that did not match the performance I was used to. Meaning the RPM goes up with substantially less energy going to the drive train. It is like the torque converter is bleeding off energy prior to the transmission. This makes sense – let me explain.
In the original computer program, the rough downshift is a result of a limited loss of energy between the transmission and the engine via the torque converter. With a tight system or direct drive, there is limited loss of energy. Consider a manual transmission for example. When the clutch is engaged, there is no loss of energy transfer from engine to transmission. Smoothness in a manual (when the engine RPM does not correspond to the correct wheel speed for gear selected) is obtained only with the slippage of the clutch. Also, the posted accel lag from the original computer EPROM is due to the same predominant direct drive setup.
My initial tests conclude the RPM is going way up with no associated thrust. In fact one test resulted in a sudden RPM accel from 4K to 6.5K with no associated thrust – runaway engine. It was like the transmission went into neutral. Several test runs from various start points (0 to 45, 0 to 60, 0 to 80, 45 to 60, etc.) all resulted in RPM runaway, albeit the down shifting was very smooth due to the same torque converter bleed off. The shifting actual stayed in the 3K to 4K range with a mushy needle.
The Dealer claims the update is not for everyone. It is only for those who complain of the rough down shifting. He further explained there are many factors going into the decision to update EPROM or not. He cited how intelligent adaptive learning system works and said you could line up 9 cars from 9 different drivers and they would all drive differently. So it depends on how you drive or how you want it to drive. They have actually seen many cars come back running terrible due to slow driving habits. They reset the learning system and they run fine. There are more issues involved than just the ITB 12-027c or previous mentioned versions
Therefore, the decision to update depends on how you drive or want it to drive. That is why it is not mandatory and only used when the specific performance does not meet the customer’s expectations/desires.
If you drive slow most of the time, maybe the de-tuned EPROM is for you. But for me, I want the old program back. So back to the dealer I go to get my old EPROM back.
Thread Starter
Registered Member
iTrader: (9)
Joined: May 2010
Posts: 3,613
Likes: 117
From: Granada Hills, CA
Torque converter bleed off?
No, in the original program, rev matching was too harsh for some people, they just minimized the downshift rev matching function.
Also corrected the gear "hunt" during acceleration from a slow down.
The engine was not detuned, I had the car dyno'd right after.
Read the A/F, timing, throttle etc MAPS, and they were identical to the earlier ROM.
(Needed to install a new UpRev ROM)
Aggressive rev matching in DS mode returns once you drive it hard.
In my case, up shifts are much faster, and positive, especially in M mode.
They accidentally installed the 10-075 on my car originally, which left the trans neutered.
This might be your case also, as you still have the upshift flare (runaway engine?).
What is your new ROM Rev??
No, in the original program, rev matching was too harsh for some people, they just minimized the downshift rev matching function.
Also corrected the gear "hunt" during acceleration from a slow down.
The engine was not detuned, I had the car dyno'd right after.
Read the A/F, timing, throttle etc MAPS, and they were identical to the earlier ROM.
(Needed to install a new UpRev ROM)
Aggressive rev matching in DS mode returns once you drive it hard.
In my case, up shifts are much faster, and positive, especially in M mode.
They accidentally installed the 10-075 on my car originally, which left the trans neutered.
This might be your case also, as you still have the upshift flare (runaway engine?).
What is your new ROM Rev??
Registered User
Joined: Dec 2012
Posts: 4
Likes: 0
Pertaining to the ROM, they installed ITB 12-027d or version "Delta." Delta came out within the last 30 days. You may be right, i have to be patient and drive it hard to influence the Adaptive Learning.
I took it back to dealer yesterday and they test drove it and said it was fine. He took it on a variety of tests as high as 85mph on the freeway. He said I need at least a 1000 miles for the adaptive learning to settle in. But i still don't understand why it takes a considerable amount of pedal travel to go, the RPMs go up and the car does not go.
In a comparison, the loaner G37X Sedan was much faster than mine. I barely have to touch the gas pedal - it goes like a rocket. My G37 has what you discribe - a RPM flare (runaway engine). But it appear to start at the lower RPMs too. It appears my car is at a much higher RPM and climbing during normal accelleration as compared to the loaner, which is rock solid RPM at initial accell - it is like the loaner was locked into a gear at lower RPM, whereas mine is not (but mine is not shifting - same gear). my RPMs do not match the speed. very mushy feel.
To describe it further - say i am in third gear, the RPM needle goes at high rate, but the car moves out slower. this is why I surmised there was some hydro loss in the torque converter. I may be totally wrong, but i do not understand how the TCM can bleed off that much energy. what mystery.
BTW - they said they can not go back to original chipset flash. their Consult only allows the latest version. they had no problem going from original Mfg version in 2009 to version 12-027d in one shot.
I took it back to dealer yesterday and they test drove it and said it was fine. He took it on a variety of tests as high as 85mph on the freeway. He said I need at least a 1000 miles for the adaptive learning to settle in. But i still don't understand why it takes a considerable amount of pedal travel to go, the RPMs go up and the car does not go.
In a comparison, the loaner G37X Sedan was much faster than mine. I barely have to touch the gas pedal - it goes like a rocket. My G37 has what you discribe - a RPM flare (runaway engine). But it appear to start at the lower RPMs too. It appears my car is at a much higher RPM and climbing during normal accelleration as compared to the loaner, which is rock solid RPM at initial accell - it is like the loaner was locked into a gear at lower RPM, whereas mine is not (but mine is not shifting - same gear). my RPMs do not match the speed. very mushy feel.
To describe it further - say i am in third gear, the RPM needle goes at high rate, but the car moves out slower. this is why I surmised there was some hydro loss in the torque converter. I may be totally wrong, but i do not understand how the TCM can bleed off that much energy. what mystery.
BTW - they said they can not go back to original chipset flash. their Consult only allows the latest version. they had no problem going from original Mfg version in 2009 to version 12-027d in one shot.
Registered User
Joined: Aug 2011
Posts: 69
Likes: 0
From: Houston, TX
Pertaining to the ROM, they installed ITB 12-027d or version "Delta." Delta came out within the last 30 days. You may be right, i have to be patient and drive it hard to influence the Adaptive Learning.
I took it back to dealer yesterday and they test drove it and said it was fine. He took it on a variety of tests as high as 85mph on the freeway. He said I need at least a 1000 miles for the adaptive learning to settle in. But i still don't understand why it takes a considerable amount of pedal travel to go, the RPMs go up and the car does not go.
In a comparison, the loaner G37X Sedan was much faster than mine. I barely have to touch the gas pedal - it goes like a rocket. My G37 has what you discribe - a RPM flare (runaway engine). But it appear to start at the lower RPMs too. It appears my car is at a much higher RPM and climbing during normal accelleration as compared to the loaner, which is rock solid RPM at initial accell - it is like the loaner was locked into a gear at lower RPM, whereas mine is not (but mine is not shifting - same gear). my RPMs do not match the speed. very mushy feel.
To describe it further - say i am in third gear, the RPM needle goes at high rate, but the car moves out slower. this is why I surmised there was some hydro loss in the torque converter. I may be totally wrong, but i do not understand how the TCM can bleed off that much energy. what mystery.
BTW - they said they can not go back to original chipset flash. their Consult only allows the latest version. they had no problem going from original Mfg version in 2009 to version 12-027d in one shot.
I took it back to dealer yesterday and they test drove it and said it was fine. He took it on a variety of tests as high as 85mph on the freeway. He said I need at least a 1000 miles for the adaptive learning to settle in. But i still don't understand why it takes a considerable amount of pedal travel to go, the RPMs go up and the car does not go.
In a comparison, the loaner G37X Sedan was much faster than mine. I barely have to touch the gas pedal - it goes like a rocket. My G37 has what you discribe - a RPM flare (runaway engine). But it appear to start at the lower RPMs too. It appears my car is at a much higher RPM and climbing during normal accelleration as compared to the loaner, which is rock solid RPM at initial accell - it is like the loaner was locked into a gear at lower RPM, whereas mine is not (but mine is not shifting - same gear). my RPMs do not match the speed. very mushy feel.
To describe it further - say i am in third gear, the RPM needle goes at high rate, but the car moves out slower. this is why I surmised there was some hydro loss in the torque converter. I may be totally wrong, but i do not understand how the TCM can bleed off that much energy. what mystery.
BTW - they said they can not go back to original chipset flash. their Consult only allows the latest version. they had no problem going from original Mfg version in 2009 to version 12-027d in one shot.