Technical No fps, warning lights and flashing odometer

[mtimm]

I have the no fps error showing, with the airbag warning lights lighting, no fps clears and is replaced by the odometer reading flashing.
A few weeks ago the radio stopped turning on.
The battery was replaced the day after the error showed up.
I've attached a picture of the faults that ate showing up.

my next step is to check the groud connections tomorrow, any other suggestions or advice is welcome.

 

[GrandePunto PL]

Yes, check the main ground and other basics. Inspect main fuse/relay box for corrosion (wires, underneath the fuses/relays) and ABS connector.
Then CAN network (one faulty module will take down or spoil almost entire communication in the car), but this is done with a "scope" (oscilloscope), right away you can see trashy waveforms, noise. Most common issues are leading to AirBag, ABS, radio, Blue&Me, dashboard (instrument cluster) modules.
Body, ECU, Steering are more reliable.

As for fuel (cutoff) related errors, it's AirBag module probably (and/or communication with the Body). AirBag + BodyComputer = FPS (or FIS) function.

Check the power quality too (alternator - if it's charging, but low like 14,1 V, it is a "beginning of the end" probably).