As of July 2015, Nissan repair manuals are available online from outlets such as Haynes.com and ChiltonDIY.com. The official Nissan site at NissanUSA.com also has many manuals that are freely available to the public for download, including the Service and Maintenance Guide for specific Nissan models.
While the manuals available from Nissan are free of charge, other Nissan online repair manuals do require payment. Haynes.com offers manuals for every type of make and model of Nissan, as a 1-year or as a 3-year subscription. Manuals can be both viewed and downloaded. Chilton DIY offers a similar service, where users have access to the manuals for 30 days or for one year.