scanner not seeing ecm

[Mustzilla]

Originally Posted by Jeff Chambers

OBDII port on a 94/95 is not an active port. You'll notice that there are only four pins in the connector. It had very limited uses on these cars and did not become fully functional until 96 (at least for the V8 Mustang). Make sure that you're using the correct test connector under the hood. There is a connector by the battery/drivers shock tower that is actually the ABS test connector even though it looks identical to the EEC test connector. It's usually got a red cover to it. You'll find the EEC test connector over by the passenger's shock tower. It is usually black. Don't forget that you need the separate STI connector (single wire/connector) to initiate the test sequence.

I had a local garage do it he tryed under dash and under hood even took it to another shop to see if it was his scanner and same resolts nothing, was advised to take to a dealer. Car does run but not like it did or should..