Quick question, how to you run ECU diagnostics?

I already searched with the keyword ECU diagnostics and nothing came out.
I’ve done this on my Prelude where I jump two wires to a connector, but how do you do it on the DA and where’s the connector to jump?

Someone at least give me the link so I can see how it’s done or tell me at least where the connector is.

Didn’t search hard enough.

http://www.g2ic.com/tegtips/engine/13.html

Thanks you sir!