I'm building an OBD-II code scanner for a University project, and I'm at
the point where I'm ready to test it. Although I have designed several
precautionary measures, I am a bit nervous about plugging it into cars
before running some more basic tests. The question is, then, how can I
simulate raw J1962 output of known error codes? I am using the ELM 32x
series to convert to the standard RS-232 signals.