I posted this on a ausi forum and thaught I might as well shoot in on here too. Ive had too many people ask me and call me about this since ive moved to Edmonton so now its here for you to do on your ownj 
NOTE: You need Nissan ATF fluid for this application. Check step “4” first so you can have everything ready to go.
Step 1: Fill tank 30mm above MAX line. “tank is located in right rear of your trunk”
Step 2: Open air bleeder on oil pump. Crack open till there is no more air coming out and you get fluid dripping. “This air bleeder is located on the pump on top of the rear diff. Bleeder is on right side. Can’t miss it”
Step 3: After you tighten up that bleeder you go and turn the ign on. Don’t start the car just turn the key to ign.
Step 4: You need to unclip the air bleeder connector. " This is a white clip located under the dash on the right side behind your kick panel" Opposite side of your ECU" Might be a good idea to un screw your kick panel before you do any of these steps. When this connector is unplugged it puts the pump in (air bleeder mode) and the pump operates at a fixed hydro pressure to the transfer actuator"
Step 5: You now need to bleed the nipple on the rear of the trans just below the tail shaft and above the hydro line attached to the rear of the trans. You want to give it 1-second blerps. You can hear the pump actuate while doing this. Do this step until there is no more air coming out the nipple.
Step 6: Go back to the tank in the trunk to check the level of fluid. Fill to MAX is necessary or just above. Now to finish the bleeding process you need to go back into the car to the air bleeder connector. You want to plug it back in and then UN plug it and plug it back in. You want to repeat this process until the lower level fluid in the tank in your trunk has a 5mm max air gap between the lower and higher level fluid. I had to plug in and unplug my bleeder sensor about 20 times at least. If you want get a friend to check the rear level while you sit in the car unplugging the bleeder sensor that might be easier. I had to do this on my own 
If this doesn’t make any sense let me know and I can retype it for you guys I’ve done a search on this info this week and also about a year ago on this forum and never came up with anything conclusive so now we got it.
This is the tank in your trunk. I didnt get any before pictures but this gives you an idea of the high and low level’s of fluid and how it should look when your finished.
This is the bleeder on the pump above the diff. Its on the right side of the diff. Very easy to spot:
This is the bleeder on the trans. I used a clear hose so I could watch the air shoot out.
This is the air bleeder connector. The fsm tells you to make a switch but it is easy to plug in and un plug many times.
