Does the engine have coil packs. Check that.
It is on the side of the oil pan.
It is under the dash on the driver side.
Two, one on each side.
It is under the dash on the passenger side.
It is on the radiator side of the engine, under the motor mount.
You can find the spark plugs for your 2002 Nissan Pathfinder on each side of the engine. The spark plugs will be near the top of the engine. A six-cylinder engine will have three spark plugs on each side.
Far driver side of the firewall under the hood.
The data link connector is under the dash on the driver side.
It should be below the belts on the passenger side of the car.
Four cylinder, far passenger side. V6, rear head, far passenger side.
My 2002 Chrysler Sebring has 154K miles on it and the front end rattles when it goes over bumps. When I jack the car up and push in and out and side to side on the wheels their is no movement. Nothing seems to be lose when I pull on the front end. I had the same problem on my 2002 Sebring Lxi Sedan. Problem was worn swaybar linkage and bushings. I had the linkage and bushing replaced and the rattling disappeared.
It is under the hood, driver side, up near the base of the windshield.