Joinng Rimac Automobili as external software developer I had to deep dive into the ASAM 2.2.0 (Odx) data model specification to understand how ECUs in vehicle communicate and how to diagnose/troubleshoot them.I developed ODX Object Model Builder library which takes pdx file, parses it's content and creates ECU Diagnostics Description.I also developed Rimac Electronic Diagnosis application for performing vehicle diagnostics, updating ECU software, performing routines, performing guided diagnostics and reading fault memory with snapshot data.