Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Check fuse 12 (7.5a) it is the power supply for the OBD port. You should have power from the battery at pin 16 of the OBD even with key off.
The airbag light will light if you turned the key on at all with the airbags disconnected, though there is also a chance that you can mess up the spiral spring when removing it. Once you can read faults you should be able to clear this and see if it returns.
If you have a meter, I would check all the fuses for power on both sides of the fuse (there are little tabs on the back of the fuse to access both legs) especially the ones denoted in the layout by an engine with a lightning bolt through them. Check them with key off, and key on (some are powered only with key on, but OBD should be powered at all times)
Do you have a small fuse block on the battery area?
Everything I see says fuse 11 in your fusebox should be for the datalink connector, and for the cluster and air conditioning. 5a fuse