www.zeroyon.com/ Enter the site, click on "Tech" and then "Service Manuals". You will need Adobe to see these. You can also download the manual to your computer if you desire.
schematic????? what are you talking about? are you looking for a service manual?????
With no endorsement of the link, below, it appears to be a plumbing schematic -- an example only.
look on eBay for service manual.
Look at pictures, or know that 89-90 have a sohc ka24e and 91-98 have a dohc ka24de
Open your hood look down to left see fuse box above battery, voila its in there.
near the drivers left foot behind the plastic cover, look on the fusebox cover for the numbers
look straight down past the place where you pour brake fluid in, that thing with the wire coming out is your O2 sensor
It should be around 80 lb/ft. To be sure look in your owner's manual or call a Nissan dealer. Do not over-torque or you will warp the rotors.
look down from the passenger front wheel toward the left its bolted to the transmission, usually gold in color, and has fat wires coming out of it.
there is a retract control relay, i don't know where it is but look at the fuse/relay boxes under the hood, it should be marked
you can purchase a repair manual for your vehicle from most auto parts stores, or try autozone.com and look under component location or repairs for the Nissan Pathfinder.
It's small. When you look at the engine from the front of the car with the hood open, it's on the left SIDE of the engine. It can be removed from just leaning over and unscrewing it.