Thread: Anyone ever wire an OBD2 device directly to PCM?

you got another car you can run dhp on? you know to test the unit out with.

with a off board you can scan but its all dead info, like the cars not running, but it will show everything your scanning and values. that would narrow it down to the cars wiring or the pcm being bad.

Originally Posted by Scottydoggs

with a off board you can scan but its all dead info, like the cars not running, but it will show everything your scanning and values. that would narrow it down to the cars wiring or the pcm being bad.

this part you didnt quote.