LLY Ficm

[kidturbo]

Hey Jason when you get a minute, please peal the sticker off this chip on a LLY board and see if it isn't a Am29F040B also. That flash chip came in several configurations. I'm still searching forums, and the rectangular version of the Am29F040B is most popular. There is also a Bosch branded version of both chips, which can be interchanged with the AMD.



While searching the EuroTech Forums, there is a couple gigabits of data dedicated to mapping these EDC15 units using that same chip. Most of the good stuff lists the Bosch chip #, and is in Czech or Polish language related to the Skoda platforms. Plenty of diesel gear heads in the eastern block. So we may need a translator. But from what I can find, these 15 series boards have been mapped out as much or more than our typical Duramax EFI tunes offer. So your idea of posting pics of the boards up, probably field some results.

That's it for me today, off to catch some z's..
Trying to win a bet that I could solve this in under two weeks. How much time we have left?

 

[Bdsankey]

Yep that sure looks like the correct one. I have one from a Corvette that works great on LBZ/LMM, but recall those having a different slope curve, or min/max voltage.
Can always toss a couple pots on the signal lines and get it to fire at idle, but a pedal will let me run the full torque tables on the bench.

Ken, send me your address and I'll mail you my LLY pedal.

 

[2004LB7]

You know. I could try TDI club. They have all sorts of members from all over. K-line to them is like EfiLive to us. I've used MPPS a few times to try and encode my cluster on my Jetta. I still have the cable.

I can at least post some pictures up and see if anyone there recognizes them being used in other vehicles. Then as you said. Flas in the right OS/firmware and we might have a cheaper source for these things

 

[2004LB7]

Hey Jason when you get a minute, please peal the sticker off this chip on a LLY board and see if it isn't a Am29F040B also. That flash chip came in several configurations. I'm still searching forums, and the rectangular version of the Am29F040B is most popular. There is also a Bosch branded version of both chips, which can be interchanged with the AMD.

View attachment 117494

While searching the EuroTech Forums, there is a couple gigabits of data dedicated to mapping these EDC15 units using that same chip. Most of the good stuff lists the Bosch chip #, and is in Czech or Polish language related to the Skoda platforms. Plenty of diesel gear heads in the eastern block. So we may need a translator. But from what I can find, these 15 series boards have been mapped out as much or more than our typical Duramax EFI tunes offer. So your idea of posting pics of the boards up, probably field some results.

That's it for me today, off to catch some z's..
Trying to win a bet that I could solve this in under two weeks. How much time we have left?

That number on the board 1 038 312 341_V3 didn't turn up any results for me. Even with taking out the spaces, V3, etc

 

[1FastBrick]

You have been a busy squirrel...
There has to be some YouTube videos floating around on the tools you mentioned.

 

[1FastBrick]

Ken, send me your address and I'll mail you my LLY pedal.

I sent him a 2003 LB7 pedal sensor and pigtail yesterday.

LLY Ficm

I think you are right about it being used on other engines before the Duramax. I too googled the EDC15C7 and they look identical. I wonder if the internal programming is the same or different. If it's the same then you may have just opened up a whole new source of FICMs for likely a lot lower cost.

www.duramaxdiesels.com

FWIW, The senor is held on by 2 of the T-20 Torx Security bits.

 

[1FastBrick]

Trying to win a bet that I could solve this in under two weeks. How much time we have left?

Well, you first posted in this thread on Aug 22, 2023 about the subject... When was the actual Bet made?

LLY Ficm

Lighting up this old tread again since it's somewhat related to my questions below. And it's not eleven years old as the one below. Which I found was fairly informative on the subject. Back when the price of a good used FICM was less than shops get to replace the $2.00 capacitors in one today...

www.duramaxdiesels.com

Not like it matters... In that time since your first post, we as a collective have come up with more info than has ever been publicly posted on the subject. And we made Jason buy an LLY truck to try and solve the issue....

Man, the lengths some people will go to just to stay away from the L.A. - Orange County Area....
Let see, $300 Round trip Plane ticket or a $9500 truck... Hmmmm tuff decision...

 

[2004LB7]

Well, you first posted in this thread on Aug 22, 2023 about the subject... When was the actual Bet made?

LLY Ficm

Lighting up this old tread again since it's somewhat related to my questions below. And it's not eleven years old as the one below. Which I found was fairly informative on the subject. Back when the price of a good used FICM was less than shops get to replace the $2.00 capacitors in one today...

www.duramaxdiesels.com

Not like it matters... In that time since your first post, we as a collective have come up with more info than has ever been publicly posted on the subject. And we made Jason buy an LLY truck to try and solve the issue....

Man, the lengths some people will go to just to stay away from the L.A. - Orange County Area....
Let see, $300 Round trip Plane ticket or a $9500 truck... Hmmmm tuff decision...

Hey, I can at least keep the truck and have fun with it. . I can't keep the plane .

In all seriousness. I figured one or two trips down to you wasn't going to cut it as I'm sure I was going to need more time and if I needed a way of testing modifications or repairs then a truck was the best bet. Even with a neat bench top tool that Ken has set up, nothing will replace actually running one in a truck. So I figured this is the best route long term. And I can have fun racing it too

 

[1FastBrick]

Hey, I can at least keep the truck and have fun with it. . I can't keep the plane .

In all seriousness. I figured one or two trips down to you wasn't going to cut it as I'm sure I was going to need more time and if I needed a way of testing modifications or repairs then a truck was the best bet. Even with a neat bench top tool that Ken has set up, nothing will replace actually running one in a truck. So I figured this is the best route long term. And I can have fun racing it too

HAHA! Just pulling your leg. I know you wanted to get a toy to play with too.

 

[2004LB7]

HAHA! Just pulling your leg. I know you wanted to get a toy to play with too.

I needed an excuse. Just having it as a toy wasn't going to cut it. I had to tell myself it was for the greater good of the community and a possible business venture that will pay for itself in FICM repairs

 

[2004LB7]

Oh, and I posted up the pictures of the two FICM's on TDI club to see in anyone there recognizes them as being used in anything else.

 

[kidturbo]

Well, you first posted in this thread on Aug 22, 2023 about the subject... When was the actual Bet made?

LLY Ficm

Lighting up this old tread again since it's somewhat related to my questions below. And it's not eleven years old as the one below. Which I found was fairly informative on the subject. Back when the price of a good used FICM was less than shops get to replace the $2.00 capacitors in one today...

www.duramaxdiesels.com

Not like it matters... In that time since your first post, we as a collective have come up with more info than has ever been publicly posted on the subject. And we made Jason buy an LLY truck to try and solve the issue....

Man, the lengths some people will go to just to stay away from the L.A. - Orange County Area....
Let see, $300 Round trip Plane ticket or a $9500 truck... Hmmmm tuff decision...

What did I miss while asleep??

Yeah I knew it couldn't be to difficult, at least related to sorting out the difference between the LB7 and LLY versions. Especially when ya put a few gear head hackers together with a common goal... LOL.

This chit is now 23yrs old. Amazing any of them still work. Between the No-Lead solder, and EU rules stating everything electrical must self destruct in less than 20yrs if tossed in a land fill. I've seen some MB models where the whole engine harness literally fell apart on the engines. So "Assembled In Mexico" probably a good thing for the FICM's...

After all the searching early this AM, found nothing that matches up to either board exactly. It's something based off of a EDC15 / 16 model. The key Bosch #'s seems to be that 0 281 01 XXX on the case. Here is our succession list.

0281010014 2001 - 2003 ECU - FICM
0281011134 2004 - 2005 ECU - FICM
0281012564 2006 ECU - E35A or EDC16C37

As we can see, they all start with 0 281 01. And I found on the offical Bosch Repair site, they claim to offer repair on all 3 above. Maybe I'll inquire tonight, see if can get a human to school me in German numbers. Bosch is setting on those boards somewhere. Go on the dark web and get the gerbers I bet.. lol

Ah yea, been two weeks today. I'm saying we won!!

 

[Bdsankey]

Ken, you mentioned talking to BT about J1939 information.

I know Ben was able to make a PCS-2800 read native CAN data on an LB7/LLY awhile back, he may have the information you're after. I believe he fed it most of the parameters it needed to function like TPS, rpm, load etc.

 

[kidturbo]

Ken, you mentioned talking to BT about J1939 information.

I know Ben was able to make a PCS-2800 read native CAN data on an LB7/LLY awhile back, he may have the information you're after. I believe he fed it most of the parameters it needed to function like TPS, rpm, load etc.

BT is much better at the K-Line related stuff than I am. He was working on side of it when we both started playing with HS GMLAN stuff long ago. J1939 is the part we both skipped over, because it's a "nothing new to see here" well defined protocol.

Both the LB7 and LLY ECM have K-Line to the DLC16, but not J1939. And no K-Line from the FICM.. From what I found in the bin, they cobbled together just enough J1939 related data on ECM side so it would talk to the Allison transmission. Since the FICM needed to talk to ECM and relay it's operational status, GM piggy backed some special commands into the J1939 CANbus network traffic. Issue is, they are undocumented, and I need to sort those out into a human readable format, so we can replicate or spoof it and make other nodes on the bus happy.

That PCS-2800 looks like a pretty cool little control device. Best part, it comes with software and documentation to modify the program so it speaks whatever language you need, on any CANbus network.
"The extensive, programmable hardware available on the TCM-2800 makes it an excellent choice to perform body control functions."

Issue we here have isn't the J1939 language, it's the 4 added IDs that GM tacked onto the J1939 data which nobody knows, yet.. We can easily sniff a running truck and record bunch of those Proprietary data points, then we just spoof it to make every other ECM happy. Option 2 is change the ECM tune file so it never ask how the FICM is doing, or dissect this proprietary data, and then replicate it's functions onto a new board. All 3 reasonable options going forward. IE: A race version FUCM that speaks to nobody, but requires the ECM to be flashed. Verses a full fledged plug-n-play replacement that reports diagnostic codes and test to the ECM just like the OEM.

For now, the quickest dirty trick fix is likely gonna be a flash upgrade to the existing LB7 version boards so they function just like a LLY version. That could done and tested in a few hours if someone has the right tools.

 

[1FastBrick]

So either you need an running LLY or you need to teach me or Jason how to sniff out what you want....

 

[kidturbo]

View attachment 117495

That number on the board 1 038 312 341_V3 didn't turn up any results for me. Even with taking out the spaces, V3, etc

1 038 312 341 is certainly our board part # Revision 03.. Which helps when I get someone at Bosch Repairs on the line and ask that general question about replacement boards.. I'll dig on it for a bit, but somewhere there there is a cad file drawaing of that board...

Looks like that's Bob's brother chip. If you want to read the bin out of it, here is that link specifically for that chip..

VAG Bosch EDC15P ECU WinOLS Remap Guide - Auto Repair Technician Home

The Bosch EDCxx series (Electronic Diesel Control) ECUs is a widely used system for modern diesel engines. It is used by BMW, VAG, Opel, SAAB [...]

www.car-auto-repair.com

Last, since you have a LLY truck handy, and good electrical skills, how about you pull Secondary Lock on the FICM connector for the Yellow or Green CANbus wires, pop those out and replace with some short pigtails. Would love to see what happens when ya cut the comms off between the FICM and ECM while it's running. Will tell us how smart this box actually is. Other option is pop the GPCM and short the CAN Hi and Lo with a paper clip. That will crash the bus, and set a bunch of codes, but accomplish the same as disconnecting it. Shouldn't hurt anything, but the first option is cleaner.

 

[1FastBrick]

1 038 312 341 is certainly our board part # Revision 03.. Which helps when I get someone at Bosch Repairs on the line and ask that general question about replacement boards.. I'll dig on it for a bit, but somewhere there there is a cad file drawaing of that board...

Looks like that's Bob's brother chip. If you want to read the bin out of it, here is that link specifically for that chip..

VAG Bosch EDC15P ECU WinOLS Remap Guide - Auto Repair Technician Home

The Bosch EDCxx series (Electronic Diesel Control) ECUs is a widely used system for modern diesel engines. It is used by BMW, VAG, Opel, SAAB [...]

www.car-auto-repair.com

Last, since you have a LLY truck handy, and good electrical skills, how about you pull Secondary Lock on the FICM connector for the Yellow or Green CANbus wires, pop those out and replace with some short pigtails. Would love to see what happens when ya cut the comms off between the FICM and ECM while it's running. Will tell us how smart this box actually is. Other option is pop the GPCM and short the CAN Hi and Lo with a paper clip. That will crash the bus, and set a bunch of codes, but accomplish the same as disconnecting it. Shouldn't hurt anything, but the first option is cleaner.

Just pull the J1939 lines out? I can do that. Do you know if the E38 uses the same pins the FICM uses? cause I happen to have one I can pull some of the pins out of.

 

[kidturbo]

Just pull the J1939 lines out? I can do that. Do you know if the E38 uses the same pins the FICM uses? cause I happen to have one I can pull some of the pins out of.

Exactly.. Let me check. Just so happened I had to move my E38 aside on the bench to work on this FUCM.

 

[kidturbo]

Nope, they are different pins. No locks like the bosch.

Check the bail connector, which is probably easier to get at. Disconnecting either one should drop the bus long enough to tell if runs without.

Sent from my SM-S901U using Tapatalk

 

[kidturbo]

Maybe that's the reason all my buddies get nervous when I say "just a little snip.." Ain't like it's your nuts or something

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