W221
19th June, 2019, 04:13 AM
I am working on a Bosch ME 2.8.1 from a Mercedes-Benz M113k platform that has been bricked by someone attempting a flash over OBD2. I was told after the flash completed using a Galletto OBD2 cable (reporting a success), the "radiator fan remained on high and vehicle would not start." I was not present when the flashing operation took place, however it clearly sounded like a non-responsive ECU so I decided to take a look at it on the bench. It will read out the flash contents over K-line fine from Boot Mode using a ByteShooter (and also KTAG successfully reads EEPROM, flash, etc. fine). However, a diagnostic connection cannot be established with the unit using Vediamo or AVDI. Could it possibly be checksum related?
Am I correct that the Galletto device should generally be off-limits to the other ICs, and restricted only to the Flash IC (which would support the idea that the flash is corrupted) or could another glitch have taken place causing the ECU to fault somewhere else? It clearly sends the seed-key to the ECU before the flashing process begins to raise the security access level, and proceeds in erasing and flashing the ECU.
I have removed the IMMO data from the EEPROM and written it back, however it still will not respond to a diagnostic session request. Any ideas on reviving this ECU would be greatly appreciated.
Thank you.
Am I correct that the Galletto device should generally be off-limits to the other ICs, and restricted only to the Flash IC (which would support the idea that the flash is corrupted) or could another glitch have taken place causing the ECU to fault somewhere else? It clearly sends the seed-key to the ECU before the flashing process begins to raise the security access level, and proceeds in erasing and flashing the ECU.
I have removed the IMMO data from the EEPROM and written it back, however it still will not respond to a diagnostic session request. Any ideas on reviving this ECU would be greatly appreciated.
Thank you.