MV auto
19th November, 2015, 05:24 PM
Hey guys!
I have a CEM to replace (with a used one) on a 2008 volvo XC70.
Replacement module have same part number, but as per scrapyard, it comes from a 2010 V70.
Part number: 7G9T-14C256-FA
I opened the original module, separate both board because memory was in sandwich between both board and could not be reach otherwise, and I found a M32C Renesas processor with what seems to be a 25LC320 just beside.
I have read/verify eeprom and Renesas with success, and I have transfer both dump in the new module. (didn't separate both board on the "new" one, as I find the pads in the back of the board to read and write both MCU and eeprom without disassembling the unit)
problem is that I have installed the new unit in vehicle, and nothing power up... not even the headlamp when you turn them on.
before I transfer the dump, my customer told me he installed the new unit and key was not catching in "ignition switch". it was pushed back.
with the transfer done, now the key catches in ignition switch, but is unable to get out of it. stuck there.
will not switch ignition on, nothing is working in the vehicle... seems to me like if the flash would have been corrupted????
when I installed back the original unit, the key was able to get in and out of the ignition switch and vehicle still start. so at least my original module is still ok.
both dump of both module read and verify ok, and after I wrote the new dumps, they verify ok.
someone have already achieved to transfer memory in those type of CEM?
anyone have any input on this one?
many thanks for your help guys!
I have a CEM to replace (with a used one) on a 2008 volvo XC70.
Replacement module have same part number, but as per scrapyard, it comes from a 2010 V70.
Part number: 7G9T-14C256-FA
I opened the original module, separate both board because memory was in sandwich between both board and could not be reach otherwise, and I found a M32C Renesas processor with what seems to be a 25LC320 just beside.
I have read/verify eeprom and Renesas with success, and I have transfer both dump in the new module. (didn't separate both board on the "new" one, as I find the pads in the back of the board to read and write both MCU and eeprom without disassembling the unit)
problem is that I have installed the new unit in vehicle, and nothing power up... not even the headlamp when you turn them on.
before I transfer the dump, my customer told me he installed the new unit and key was not catching in "ignition switch". it was pushed back.
with the transfer done, now the key catches in ignition switch, but is unable to get out of it. stuck there.
will not switch ignition on, nothing is working in the vehicle... seems to me like if the flash would have been corrupted????
when I installed back the original unit, the key was able to get in and out of the ignition switch and vehicle still start. so at least my original module is still ok.
both dump of both module read and verify ok, and after I wrote the new dumps, they verify ok.
someone have already achieved to transfer memory in those type of CEM?
anyone have any input on this one?
many thanks for your help guys!