How to read and write an ECU BOSCH ME7.4.6

by **JOE56570** » Sat May 11, 2013 5:49 pm

Hello,
I must change my ECM Bosch ME7.4.6 (on Citroen C5 V6 210HP 3.0l petrol) and I try to retrieve the contents of the eeprom 25C16 (immobilizer) and eeprom AM29ff400 to rewrite on the new (used) . The BSI is original.
I currently own the Citroen tools after sale (Diagbox-Lexia) that does not allow access to the contents of the eeprom 25C16.
I wish to prevent desoldering components.
Can I use a Galletto V2 with BDM probe (JTAG) and if so how in practice. I noticed that on the ME7.4.6 there was a series of copper pads probably destined for testing and programming module.
I wish to purchase a V2 galletto with BDM, but in the application list, the Bosch ME7.4.6 is not listed!
I asked several dealers who do not know!
Can you help me?
Thank you in advance

by **ecuedit** » Sun May 12, 2013 11:59 am

you can not connect to ME7.4.6 with BDM...there is no pins on it :)
You have to work in boot mode.

Full backup in boot mode can be done with KTAG - that's the best choice, than you can make complete clone of the ECU.
But desoldering immo chip is very easy :) 2min job...

Flashing of eprom can be done with galletto in boot mode or mpps v12 as well (generic mode).

by **JOE56570** » Tue May 14, 2013 10:32 am

Thank you for your answer :thumbup: , but a galletto 1260 is enough or needed Galleto V2 ?
Otherwise, with MPPS V12, the connections with the plug OBD are the same that with Galletto (as described in your guide for read/write ME7.4.6) ?

by **ecuedit** » Tue May 14, 2013 2:44 pm

yes obd is obd, plugs are the same, galleto 1260 is enough,
you can flash it and than switch the immo chip and that's it.

by **titi65** » Mon Aug 19, 2013 5:16 pm

Hi !
Do you have sucess in your way ?

I've got same engine in similar car, looking after details too . ..

by **ocorrea73** » Tue Oct 29, 2013 6:58 pm

ecu Bosch ME7.1.1

by **mediapolska** » Thu Nov 13, 2014 6:41 pm

Any news or more details about cutting off immo ?

by **amper1** » Sat Sep 19, 2015 1:53 pm

Hallo,
want to read ME7.5 with MPPS12 via "Generic Bosch ME7.XX 1MB Kline" Protocol,
but can't find a pinout instruction,
please can someone help me with it.