16206304 and less important 1623019 from poland

European GM ECUs and PCMs
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Re: 16206304 and less important 1623019 from poland

Postby antus » Sat Jul 23, 2022 4:48 pm

yep looks like its just 160 baud like the fso software in dosbox is using. you could try winaldl with your interface, but I think the software you have shows all the available data. there is patents for the d1927a. 4 wire interface is ref high, ref low, bypass amd ignition. module generates spark then when ecm is happy rpm is fast enough for the ecm timing to work it uses bypass to turn off the modules built in spark and it starts using the ecms spark. on ours cutover is 400rpm.
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Re: 16206304 and less important 1623019 from poland

Postby antus » Sat Jul 23, 2022 4:56 pm

https://patents.google.com/patent/US4711226A/en
https://patents.google.com/patent/US4750467A/en

I am not absolutelymcertain this is the right system, I have these details noted from another thread a long long time ago but its not clear how to validate it. To the best of my knowledge its right, or perhaps its the 6cyl version of the same thing.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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Re: 16206304 and less important 1623019 from poland

Postby gabriel0 » Mon Jul 25, 2022 8:12 am

Thank you so much for dissasembly the code. Is it possible to add 8192 to this eprom with no other changes like ignition, fuel maps?

And where can i find what exactly eprom contains? Just generally like fuel map, processor code, malf-s, what else?

And about DIS module, almost always its broken power transistor(mosfet?) the biggest one at the end of module, but it is unrepairable because of epoxy resin which all modules was filled.

Edit, there was probably two manuractures of it. I found one that was filled just by sticky gel.
9521358400_1471709862.jpg
Last edited by gabriel0 on Sat Jul 30, 2022 10:42 pm, edited 2 times in total.
This engine converts fuel into heat and noise.
The car is propelled by exhaust gas recoil from the exhaust pipe.

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Re: 16206304 and less important 1623019 from poland

Postby pman92 » Mon Jul 25, 2022 3:49 pm

Your probably better off finding the maps and migrating to $12P. I'm not 100% sure how you would go about doing that though
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Re: 16206304 and less important 1623019 from poland

Postby charlay86 » Tue Jul 26, 2022 11:59 pm

In the disassembly you find the 160 baud serial handler and then find the table of parameters that it points to. Since you know which byte is tps%, ECT, MAP, rpm, spark advance etc you can find where each variable is located in ram. That will get you quite deep into the program.

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