It ain't that easy Andrew. What model year, engine, transmission etc
If it's a Y60 TD42T auto, you'll need at least 3 sources (unless you can read japanese):
Nissan workshop manuals and updates for your year for GQ
Workshop manual on here for GU (gives you detail of TD42T and Auto box) - available on the GU forum
Fast software.
Haynes manual (or your equiv) isn't really up to it.