smartoss

I bought the car and was told it just needed a turbo and exhaust manifold, the old one was cracked. We got it all replaced this weekend and the car runs. We haven't driven it yet. It sounds a little rough, and after idling for a while the check engine light comes on.
I tried to pull the codes but when I turn the Phillips head counter clockwise and turn the ignition on I don't get any lights one the ecu. I opened the back side of the ECU there doesn't appear to be any lights in this one. It's labeled WC 23710-69f00 the WC ecu should be the correct one for the s14 SR. but how can I pull the diagnostic codes without a LED.
there is a apexi afcneo hooked up but i couldn't find anything in the menus.