I have a 98 Taurus that has a Check Engine light on constantly. I took the car to an AutoZone to have the codes scanned and it woldn't power up the scanner that they plugged into the diagnostic port. Thinking it might be the tool, I took it to a different AutoZone, but had the same problem. I have a manual that gives some typical diagrams, but nothing that shows what module(s) the connector ties into, which connectors/pins it goes through, etc. I don't have any clue how to troubleshoot this problem. Any suggestions would be welcom.
Thanks, Steve