Vida CEM swapping

oscilloscope · Post by **oscilloscope** » 17 Aug 2022, 15:02

ZRimaZ wrote: 17 Aug 2022, 14:16 You mean ABS (BCM) serial? No. BCM serial is in ECM eeprom as part of immo system

yeah I'm having a play around with some old crap i have i bought from ebay. as i am trying to understand the cem+ecu synchro process , and wanted to see if i can see the ABS ID , unfortunately Ghidra doesn't recognise the eeprom from the ecu.

5ft24 · Post by **5ft24** » 17 Aug 2022, 15:33

Speaking of ECM's, anyone know how to get the ECM PIN? P2, 2005 XC90 V8

oscilloscope · Post by **oscilloscope** » 17 Aug 2022, 15:35

5ft24 wrote: 17 Aug 2022, 15:33 Speaking of ECM's, anyone know how to get the ECM PIN? P2, 2005 XC90 V8

ecm pin ? , isn't the pin stored in the cem?

5ft24 · Post by **5ft24** » 17 Aug 2022, 16:24

VDASH requires both the CEM PIN and ECM PIN to be able to flash a tune to the ECM.

oscilloscope · Post by **oscilloscope** » 19 Aug 2022, 12:12

oscilloscope wrote: 17 Aug 2022, 15:02
ZRimaZ wrote: 17 Aug 2022, 14:16 You mean ABS (BCM) serial? No. BCM serial is in ECM eeprom as part of immo system
yeah I'm having a play around with some old crap i have i bought from ebay. as i am trying to understand the cem+ecu synchro process , and wanted to see if i can see the ABS ID , unfortunately Ghidra doesn't recognise the eeprom from the ecu.

Is there a way to make these dumps from the ecu or cem into a readable form ? As the moment it's just gibberish

Post by **vtl** » 19 Aug 2022, 12:16

oscilloscope wrote: 19 Aug 2022, 12:12 Is there a way to make these dumps from the ecu or cem into a readable form ? As the moment it's just gibberish

Define "readable"?

oscilloscope · Post by **oscilloscope** » 19 Aug 2022, 12:25

vtl wrote: 19 Aug 2022, 12:16
oscilloscope wrote: 19 Aug 2022, 12:12 Is there a way to make these dumps from the ecu or cem into a readable form ? As the moment it's just gibberish
Define "readable"?

From what it's in to human readable instead of 'ff or backwards question marks , or zeros with wavey lines above them.

Post by **vtl** » 19 Aug 2022, 12:31

oscilloscope wrote: 19 Aug 2022, 12:25 From what it's in to human readable instead of 'ff or backwards question marks , or zeros with wavey lines above them.

I disassembled a few dumps with https://onlinedisassembler.com/odaweb/

oscilloscope · Post by **oscilloscope** » 19 Aug 2022, 12:53

vtl wrote: 19 Aug 2022, 12:31
oscilloscope wrote: 19 Aug 2022, 12:25 From what it's in to human readable instead of 'ff or backwards question marks , or zeros with wavey lines above them.
I disassembled a few dumps with https://onlinedisassembler.com/odaweb/

Thanks, man there is alot of options to go through

looks like I'll be up all night

Bryt · Post by **Bryt** » 20 Aug 2022, 07:01

Is this working with P2 V70 2001-2004?
https://github.com/mdapoz/volvo-cem-cracker