11-21-2013, 05:04 PM
Join Date: Nov 2009
Total Cats: 3
99 Miata ECU pinout and OBD2 port issues
Hi guys, and ladies
I didnt know where this should go, so if it needs to be moved go for it mods.
My check engine light came on the other day so I pulled out my handy scanner to see what was the issue. The scanner turned on but wasnt able to connect....weird.....
so I went to diagnosing.
I got my DVOM and checked the OBD2 port, the ground and 2 powers are working, leaving the issue to be with the signal (k) line.
I then checked what I thought was the correct pinout to see what line it is from the ecu to the obd2 port, and there was no pin in that position.
So either my signal wire has disappeared or I am looking at the wrong wire.
Help on this would be great, if you tell me to go MS3 then...well..i just might.