[davedrivesody]

The way the system works is that the immobilizer unit has to be programmed to the ECU.

The part the OP replaced, the immobilizer receiver, is plug and play no programming required. It reads the code from the key and sends it to the PCM where it is validated.

 

[davedrivesody]

what if the green key light dose not come on at all

Most likely, the bulb is burned out.

Otherwise, the wiring between the PCM and the bulb is bad.

Most unlikely, the PCM is bad.

 

[davedrivesody]

there's no power to the OBD2 port

Check fuse #46 15A marked "ACG S" in the under-hood fuse box.