1995 Isuzu Rodeo Question OBD1 code

I am not sure if the connector is incomplete. It looks like maybe the end of the connector is missing. Without a picture it is hard to tell. I cannot retrieve the code to cause the check engine light to go off and therefore cannot get the damn thing smogged. I need to know how to retrieve the code and a picture would help because it is hard to tell. One friend said that it is most likely the cold engine injector and that it was seperate from the other one.