Hi Pheonix, do you have comms with engine ecu.

check in bsi peramiters go into immo check transponder recognised

if no comms with engine check feeds earths
double relay at ecu gives problems on these.

ecu pins Ign off Ign ON
A1 A2 B11 B12 0volt 0v

B1 12v 12v

B25 12v 0-1v

B47 0v 12v

B48 0v 12v

B15 12v cranking (shut off valve)

Hope this helps