Eurovettes
Supporting vendor
look up ABS fixer in usa - I have used him many times
C5 1999 Model ABS and Traction Lights came ON yesterday - HELP
- Thread starter Nickerbocker Glory
- Start date
teamzr1
Supporting vendor
As an update to Nicks EBTCM failures
As you know, he finally found a functional replacement unit as he could find no one who would attempt to fix his
and other in the past tried fixing that model and gave up
We discussed this and decided he shipped me the bad one and by chance I could find the problems
so like a slow boat from China Nick shipped the unit like last summer to Keith of EuroVettes who hanged onto it
until he went to his southern Ca business site and then shipped it to me last week
I can see why nobody wanted to work on this
The power/relay board is soldered at 16 pins to the main electronics board underneath
and 10 of those pins as shown below has no free space to really desolder them.
Was a real bitch, but I got them all
Found one major solder joint crack to one of the 10 pin header and worse once I got the power board lifted
found a circuit trace from that pin on back side burnt and broken
I repaired all that and then had to fight getting all 16 pins lined up to get that board seated in and solder all 16 solder joints
While at it, I tested all parts on that board and both relays
Now the return, shipping EBTCM back (I put some surprises in the box because I am a wild & crazy guy
to Keith
and once back to Nick, he could swap that in his C5 and see if we lucked out that there was no other damage to the electronics of the main board that have small surface mounted components that cannot be replaced
As you know, he finally found a functional replacement unit as he could find no one who would attempt to fix his
and other in the past tried fixing that model and gave up
We discussed this and decided he shipped me the bad one and by chance I could find the problems
so like a slow boat from China Nick shipped the unit like last summer to Keith of EuroVettes who hanged onto it
until he went to his southern Ca business site and then shipped it to me last week
I can see why nobody wanted to work on this
The power/relay board is soldered at 16 pins to the main electronics board underneath
and 10 of those pins as shown below has no free space to really desolder them.
Was a real bitch, but I got them all
Found one major solder joint crack to one of the 10 pin header and worse once I got the power board lifted
found a circuit trace from that pin on back side burnt and broken
I repaired all that and then had to fight getting all 16 pins lined up to get that board seated in and solder all 16 solder joints
While at it, I tested all parts on that board and both relays
Now the return, shipping EBTCM back (I put some surprises in the box because I am a wild & crazy guy
to Keithand once back to Nick, he could swap that in his C5 and see if we lucked out that there was no other damage to the electronics of the main board that have small surface mounted components that cannot be replaced
teamzr1
Supporting vendor
Wow John, that is great work! I thought those items were irreparable and I believe scrap ones are as rare as hen's teeth.
You could easily make a good living repairing them
Cannot tell until Nick as the testpig (wonder who talked him into this
gets this EBTCM back and does a testcase if that fixes all ABS/TC issues
The job would be much easier if the car was local as that easy to make a fix, test, if not look for more to fix
Crap job of having to desolder old solder joints, stuff just does not want to melt easy
worse is when installing the board back onto the 16 pins that they all have to be exactly the same spacing to line up
to the 16 holes of the board and then solder it all back up and in all this not melting the plastic of both relays, the blue cap you see
and the 2 black connectors
Not sure who would want to do these all the time as I did a dumb shift moment with the shaft of desolder tool
Mike W
Busy user
Me too, I have the EBCM internal fault code on my '98 Pace Car.
Nickerbocker Glory
CCCUK Member
JR has worked magic.... no-one, but no-one else amongst all the ABS fixers here and in the States could offer me anything, Dud / aka DEAD. I had no choice but to buy a secondhand EBTCM on EBay - shockingly expensive but so far no problem.
Keith at Eurovettes has been a great go-between as he criss-crosses to Ca and back. So, I'm pleased to say that I was instrumental in recommending JR's impressive TeamZR1 remote re-tuning packages (his detailed understanding of Corvette electronics is legendary) to Keith and I understand he and JR are working on a couple of retunes as I write. They will be doing the same for mine once it's back on the road after a Winter SORN.
I should maybe add that neither Keith nor JR requested I give them any kind of promotion or endorsement - it just seems an appropriate postscript to this year long saga where the apparently impossible has been transformed into a potentially happy outcome with me having a Spare EBTCM.
Keith at Eurovettes has been a great go-between as he criss-crosses to Ca and back. So, I'm pleased to say that I was instrumental in recommending JR's impressive TeamZR1 remote re-tuning packages (his detailed understanding of Corvette electronics is legendary) to Keith and I understand he and JR are working on a couple of retunes as I write. They will be doing the same for mine once it's back on the road after a Winter SORN.
I should maybe add that neither Keith nor JR requested I give them any kind of promotion or endorsement - it just seems an appropriate postscript to this year long saga where the apparently impossible has been transformed into a potentially happy outcome with me having a Spare EBTCM.
V8 YEA
CCCUK Member
Great news that JR's fix has worked. It would be great if he could provide some kind of repair /exchange for the dud units we have.
Or maybe school somebody in how to do it ?
I wonder how many people in the USA would be customers too.
Thanks for a great thread and thanks JR for your pictures and talking us through your work.
And Keith of course !
Or maybe school somebody in how to do it ?
I wonder how many people in the USA would be customers too.
Thanks for a great thread and thanks JR for your pictures and talking us through your work.
And Keith of course !
Nickerbocker Glory
CCCUK Member
Right now it's still a Potential Fix!
As JR is at pains to explain - we can't be sure it's running because the Module can't be bench tested - it has to be connected / in the car to work. That will take some more time and trouble to arrange as my 'local' Corvette specialist is not nearby / always booked way in advance.
So, cold patience pie is still the dish of the day - But I'm optimistic
As JR is at pains to explain - we can't be sure it's running because the Module can't be bench tested - it has to be connected / in the car to work. That will take some more time and trouble to arrange as my 'local' Corvette specialist is not nearby / always booked way in advance.
So, cold patience pie is still the dish of the day - But I'm optimistic
Eurovettes
Supporting vendor
255 kiss of death - but do not despair JR (teamzr1 ) may be able to help - I travel back /forth to usa often and can coordinate repairs - keef @eurovettes.com
oelarse
Well-known user
Cannot tell until Nick as the testpig (wonder who talked him into this
gets this EBTCM back and does a testcase if that fixes all ABS/TC issues
The job would be much easier if the car was local as that easy to make a fix, test, if not look for more to fix
Crap job of having to desolder old solder joints, stuff just does not want to melt easy
worse is when installing the board back onto the 16 pins that they all have to be exactly the same spacing to line up
to the 16 holes of the board and then solder it all back up and in all this not melting the plastic of both relays, the blue cap you see
and the 2 black connectors
Not sure who would want to do these all the time as I did a dumb shift moment with the shaft of desolder tool
View attachment 21336
I bought meself a used cheap Cadillac EBCTM and trained myself replacing these two Bosch relays . I used a soldering iron with vacuumpump to remove the soldering
I had to repair the trace before putting the ebcm together
Last edited:
Nickerbocker Glory
CCCUK Member
Another really encouraging post - thanks Oelarse. Replicating fixing burnt out 'traces' on circuit boards and relays. Reassuring to know there's someone else out there with JR's Can-Do attitude. Necessity is the mother of invention they say, but not everyone can rise to the occasion. Not me - well, on this occasion anyway But it really does seem that the ETBCM can be fixed - if you know what you're doing - after all
But it really does seem that the ETBCM can be fixed - if you know what you're doing - after all