Here we go…got some spare ECMs from eBay for this hot rod Saab V6 Turbo!
Now the tricky part: PROGRAMMING!
For this operation we need the OEM GM Tech2 with a Saab twist.
This is my first time programming a Saab, so let’s jump through all the Quirky hoops together 🙂
SPECIAL THANKS TO THE SMART SAAB GURUS!
https://www.saabcentral.com/threads/tech2win-for-saab-fixes-i-bus-missing-on-2003-9-3.731283/
Enjoy!
Ivan
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when testing something like that, where the case ground is bolted directly to part of the engine, then you should only ground it to part of the engine and preferably the same exact location as original. it may have some single wire sensors and whatnot dependent on a good ground to engine.
hopefully "shooting yourself in the foot" on that one wasn't very painful. lol!
Saab owner from Iceland. Very well articulated video a big help for us Saabers, my hat off to you 😀
Thanks hope you enjoy xmas with your family!
From an ECM design standpoint, it is very strange to have any load currents flow through the case ground, and certainly not the case itself, worse yet actually having two connections which are positioned perfectly to flow currents through the case casting. The case ground (electrically connected to the aluminum case itself) is usually electrically isolated from the main PCB reference plane (commonly called a ground plane), through an impedance which value is finalized through the process of EMC testing at the OEM. In the ECM design prototype stage the impedance is usually a resistor in parallel with a capacitor near each connection from the reference plane (circuit ground) to the case (case ground). The starting values are usually something like 499 Ohms (0805) and 10nF (X7R Ceramic 0805). The components are basically place holders for trying different resistor values and capacitor types.
Great video.I think every saab owner of these generations should pickup a cheap j2534 unit and purchase the old SPS programming system available cheap on ebay ,about 400.00 . These ecms are notorious for fried drivers and other common failures. The reprogram process is easy just follow the screen prompts and menu
Ivan, have you ever considered running a virtual machine to emulate older versions of windows?
They're incredibly easy and useful. I use a Linux distro, but I emulate all manner of windows OS when I need them.
Great work!
I can see how proud you are of your self ivan and so you should be young man.
Well done.
There is nothing you can't do ivan.
Happy days.
Have a great Christmas.
From the england.
Kick yourself you should know the basic,s
Your brain is a national treasure for anyone who tries to drive or maintain post-1995 cars with any form of electronic control system. Thanks, Ivan!
Hey Ivan, next time you have one of these ECU's that you can destroy.. TAKE IT APART
You will be amazed at what is contained inside.
They use a ceramic PCB with ultrasonically welded aluminum wire that bonds between the PCB and the connector pin
Awesome tech but impossible to repair anything apart from a failed bond wire
If you want I can dig up some pictures when I was repairing this kind of thing
First visit to this channel. This repair is worth the entire value of the car; if it couldn't be fixed, it's a parts car. What amazing gumption and resourcefulness you have! Well done!
Hey Ivan, ai believe I have watched most of your videos and they are awesome! I do have a quick question. What camera set up do u use to record these videos? Let me know..Thanks!!
EXCELLENT! Thanks for a real life example of the modern programing quirks. BTW have you used the newer Chrysler stuff that requires more CAN signals? That was a Total PIA to get everything to communicate
Wow! You outdid yourself on this one! Whatever you were paid for the job, it wasn't enough!
I’ve had a similar issue with a Honda PCM grounding via the mounting bolts/case. I forgot to retighten bolts after loosening them-caused weird symptoms.
Glad you showed the issue with the external ground. Only thing I wonder is if you noticed that when the 2nd and 3rd did the same thing? Seen this on retro computer repairs as well. People think the RF shield is useless until they find out it's part of the ground for the PCB.