Daf cf 85 430 configuration error red?

Hi have a daf and has configuration error red on main display along with a few other faults like oil level etc! truck turning but no start. Main relay g126 does not seem to be working and even putting power in and out off big pins makes no difference! All fuses have being checked along with wiring from fire wall to engine control unit! Can some one please help me with this one. Thanks