Where is 2002 mazda 626 4cyl ECM/PCM located?
Check engine lite came on, code P0400, egr malfunction. Checked vacuum and exhaust flow at egr ports, all ok. Replaced egr valve, did drive test, check engine lite came on, same code. Want to check connections at ecm/pcm, but can't find it. Also, any other suggestions on why the code comes back? I need to get a smog cert. for my license plates. Thanks!
Is this a good question?