Mercedes c30 AMG 231 chiptuning failure!!! Strange problem

[elcarpuz]

Hi all friends, today i chiptune c30 Amg, connect magpro authentic to read out, impossible no connection with ecu edc15c6, i contact helpdesk, they says unsolder eprom...

i test read ecu with galletto v54, no c30 in menu, well, i read with c270 driver, all ok, save ORI 1mo

test to write my MOD file, 96% and fail, car don't start, ok....

rewrite ORI, fail at 56%, retest again and write 100% engine start...

i open ecu to look eprom and see it's 29f400 (theory 512ko file), i look ORI and MOD file, and i can see in hexa, 2x the same dump 512x2

Result: i mod the 1024ko in 512ko, calculate checksum and test program in obd with galletto, galletto erase eprom and after fail, restest write ORI in 1024 but fail...

open ecu unsolder eprom and write ORI, after connect in pinout on table , read identification all OK but when read, fail after 15% and after communication impossible, i unsolder again, read eprom and i can see dump change in 4 or 5 adress, i need need rewrite ORI to get communication

not tested restart engine because i can see fail when read, before ecu blocked never fail when reading...

what do you think for this strange problem?

[budG60]

Bad flash interface?
Have you tried to read the ecu removed from the car by k-line?

[elcarpuz]

Yes, all test on table are in k-line with galletto v54 EU clone

[Babos]

update ecu via star and after unsolder eeprom and read via programtaror made tune and put all back.

[dean 21]

Hi, here is some file from that car, test it, maybe will work. flash it wia programer.

[elcarpuz]

Hi, iwrite ORI directly on Flash and test ecu on the car, when ignition on FAN engine run and car don't start, no communication with ecu on galletto on OBD

any idea, i need car restart!

[elcarpuz]

boot mode can help me?

[elcarpuz]

i work on ecu today, i think i know what is the problem....

when solder flash i use flux, i haven't seen but flux go inside component and when ecu is to 12v, in night, i have seen small spark on pin of component !!! MB_EDC15C6 Boot PIN.jpgMB_EDC15C6 Boot PIN.jpg

[Aajii]

I had strange ecu defects two weeks ago, done hundreds of similar jobs before.
When I tried to find the problem, I noticed that:
common thing for all these ecu malfunctions were, that I made soldering and used flux.
The new flux was different brand than before, and I noticed that "best before" date was gone time a go!
I measured flux with multimeter, and with ~0.5mm distance with test leads, it gave ~500ohm resistance!
Usually flux is not a problem, but I am almost sure that in my case it was... !

Measure resistance of your flux.

[elcarpuz]

Yes maybe that is problem, this night, i clean board with aceton, connect ecu, and it works, can read and write...

i desolder again, to write MOD in the flash, use flux to do nice solder, clean all, retest, no communication, retest with ORI, no communication

i'm crazy...

[insomnia2009]

its possible you have faulty flash chip or eeprom it can happen.

[elcarpuz]

tested another flash, same problem, yesterday, i program flash with ORI, check solder...ecu rework

read flash with galletto, save OK, test to write MOD, fail, desolder flash, program ORI, test with galletto, no communication

i go to be crazy!

[elcarpuz]

A very very small quantity flux has 200kohm-500kohm resistor!

i need clean all

[elcarpuz]

in latest solution, is it possible adapt EDC15C6 of 270 cdi with different SW and HW?

[elcarpuz]

i clean all board, do all solder, do again solder 29f400 with ORI inside, now ecu connect and can read flash by K-line with galletto, i think can start engine now, install in car and bye bye

many and many work for nothing, ecu is'nt chiptuned, no solution, tested program MOD file but 94% i have fail, after again the nightmare