On the side of the plg oyu gota kinda pri up on the only peace that looks like its not part of theplug it self. Then you can press the tabs on the inside for the pins them self and they should pull out. At lease i know this is how it is on my obd @ GSR. ?I could be very wrong but its worth a look/try.
there is a plug that has two wires coming off of it and it is not pluged into anything, you stick a piece of metal into both of the slots so that you complete the circuit. I use a paper clip, then you turn your key on to acc. and count the blinking lights 1 long=10 1 short=1, there will be pauses between diffrent codes.