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.
It is inside the passenger side of the engine, driven by the timing belt/chain.
Inside the passenger side of the engine. Driven by the timing belt.