Service port

[86GN-862+2]

Where exactly is the dealer diagnostic service port located on the ECM ? Don't mean ALDL port.

 

[mturbo87]

Where exactly is the dealer diagnostic service port located on the ECM ? Don't mean ALDL port.

Back side of the ecm, opposite the harness plugs.

 

[TurboBob]

the stock ECM or an aftermarket?

on the stock ECM, the only "dealer" port is the aldl.

There is a 'development' port that the PowerLogger connects to, this is inside the ECM, you need to open it up to see it.

Bob