VW Golf 4 CU cloning

[defowach]

Hi.
I am trying to clone a VW Golf 4 Marelli 4MV ECU but upon trying to read the 95080 eeprom I could not get any data. The 2nd hand ECU also gives the same thing & to see if my programmer is ok I've tried reading a 95080 eeprom on a Bosch M7.4.4 & could get data. Would like to know if there is a special procedure to read the 95080 on a Marelli 4MV ecu. Would like to say that my original ecu works perfectly . I'm only trying to clone another ecu so as to be able to program a remapped file & keep the original one as back up. Would have tried to do an adaptation using vag com but problem is that I don't know SKC of the 2nd hand ecu I bought. Any help would be very much appreciated.Thanks to all.

[gejzaslapka]

desolder eeprom and read directly in programmer. Must work!

WBR
GS

[frikki]

if you remove serial eeprom make sure all 8 legs is touching in programmer. post dump for secret pin code. thanks.

[defowach]

Hi.
Many thanks for your replies & help.I have desoldered the eeprom to be read directly onto the programmer , used the 8 pin pomona clips & even the small grabbers but still i don't get any data. It's as if the eeprom is blank ( which I think is quite impossible). I've tried reading with the omega orange, Arlabs from Andromeda & Seeprog programmers but still no results.

[gejzaslapka]

you can swap physically whole eeprom reprogramm not needed in your case. What programmer do you use?

GS

[defowach]

I know that i can swap the eeprom from my original ecu to the 2nd hand one but i want to keep my original ecu as a spare & hook it back at any time without having to do the soldering & desoldering procedures. I've used the EEPROM + programmer from Andromeda research labs, Omega-Orange programmer & the seeprog programmer. I will try to read it again tomorrow taking special attention to cleanliness of the eeprom tracks.Any idea in the meantime would be very helpful.

[gejzaslapka]

i use Beeprog+ for 95080 eeproms with ZIF adapter to DIL and not perfectly cleaned legs are the only reason when it not work

GS

[frikki]

i agree. make sure all the legs are clean and making proper contact. also swap your eeprom around in programmer.