I had the same problem with my 2005, I changed the fuel pump, still no luck. Then I posted problem on here and someone sent me a site which i am posting here, this was the problem, I tried all the test that the poster of the solution posted and all things worked correctly, tried the switch out anyway, and my 2005 fired right up. If you are a diy ( do it yourselfer) you will have no problem repairing your own pathfinder, the link is http://www.titanspot.com/Titan/index.ph
p?showtopic=9442&st=0 I did this myself in about 30 minutes. The cost of the part through Nissan is about $200 but again if you do it yourself no labor. I know this is a Titan site but a Nissan is a Nissan. Hope this helps you out. Good luck.