Citroen XM PRV 12s ECU - Fenix3B

[cineman]

Hello all !

I have a CItroen XM ( prv , 12s ) ECU, a Fenix3B . I opened it and found "fenix3B" on the ROM so i'm sure it is
I would like to try use it and maybe remap the ROM, to use it on another PRV .

I tried to give it power but i'm not able to start it..I expect it to boot and supply the fuel pump a second to prime, but it dont do it.
Looking at the schematics, i see that there is an anti-thief system. Maybe is it the reason ? I dont know how it works, is there a way to go around it ? For me it seems just a simple system wich give a signal for the supply relay but maybe i'm wrong...
If you know how to start this thing please help me
Here attached the schematics I used ( they are a bit different each other, i used the Citroen marked one )

http://stefftnt.chez-alice.fr/Citroenxm ... nix3B1.jpg

http://stefftnt.chez-alice.fr/Citroenxm ... nix3B2.jpg

http://pepon1.free.fr/CITROEN%20XM_fich ... ection.jpg

thank you !

[cooldrick]

Hello cineman

I do not too much know how to resolve your problem having never met him(it), :$ but I think that members will have maybe an idea has this subject.

Maybe that our dear president will have an idea

good courage

and soon has. :hai: :hai: :hai:

[cineman]

Ok !

I have concerning in particular about PIN 3 and 26 of the ECU . In the schematics they are connected to another box (info vitesse and ordinateur de bord ) , wich i dont have and i dont want to use... Is it possible? On the Fenix 3B of a R25 they can be not connected, from the schematics I have... but maybe on the XM they put some check in the ROM ? Who know

Maybe i can try to write the ROM with a file from another Fenix3B from a R25??

[cineman]

Ok... problem solved for now I just did a wrong correction on the main supply... PIN30 has to be supplied before PIN4, not the contrary, lol... The ECU now boot, prime the pump, and during cranking i can see an intermittent signal on the injector output and bobine output... I still not tried to start the engine ( a PRV from an Espace, Z7W706 ) but if it will i will post videos
Andrea

[cineman]

ehi it started

PRV 2849cc from an Espace , Z7W706, with a Fenix3B ECU from a Citroen XM V6 12S.

http://www.youtube.com/watch?v=bbvuBYPTHnQ

brum brum ...

[machouse]

Nice ! Very nice work !