I just replaced both CV joint assemblies on my '94 w/ auto-locking hubs. The clip should go right back on. On one side I had to pull on the axle (by hand) outward to expose the groove for the clip. There is some play and yours might just be retracted a little. Also make sure wheel bearings, hub, etc. are seated properly and the lock mechanism is assembled properly. Hope this helps!
The 2001 Nissan Pathfinder has rear wheel drive.
The 2002 Nissan Pathfinder has rear wheel drive.
The 2012 Nissan Pathfinder has rear wheel drive.
The 2010 Nissan Pathfinder has rear wheel drive.
The 2006 Nissan Pathfinder has rear wheel drive.
The 2011 Nissan Pathfinder has rear wheel drive.
The 2008 Nissan Pathfinder has rear wheel drive.
The 2013 Nissan Pathfinder has front wheel drive.
The 2007 Nissan Pathfinder has rear wheel drive.
The 2002 Nissan Pathfinder has a 4-speed automatic.
The 2004 Nissan Pathfinder has rear wheel drive.
The 2014 Nissan Pathfinder has front wheel drive.