Consumption Signal: Understanding & Optimization

Hello,

I'm driving an AFN (presumably a type of engine) in an old VW bus and I don't have an MFA (likely referring to a Multifunction Display). I just got a small...
I built a dashboard computer that displays all sorts of data. Unfortunately, I don't know how to...
'Interpreting the consumption signal can be tricky. Is it a PWM signal? Can anyone please help or offer suggestions on how to decipher this signal using clever methods?'

Thank you.

Maciek.