Not 100% sure on the legalities regarding hosting of such files which is why I wont put my D40 manual up on my host but for those interested you can try the link below and get the Frontier manual.
Download PDF Nissan Frontier 2005 Service Manual | PDFTown.com
Obviously this is American and left handed tools must be used for any work under taken on our Nav's but it might give those interested some idea. There could even be D22 manuals listed I'm not exactly sure which models relate to the D22.
Edit: There is a link on that site to a 2006 Titan that looks different to their Frontier, not sure if that's closer to a D22 or not but the manual is there