Nissan realized their stupidity in having the oil filter right above the starter, so with the D22/WD22, they relocated the oil filter to the driver-side front of the engine block.
To be sure your ignition switch and "starter" relay is operating properly, you can short the black/pink wire (that goes to the starter, 18AWG) to +12V and see if the starter cranks or not. You can intercept this black/pink wire either at the starter, or at the "starter" relay (driver side for auto trans or passenger side for manual trans).
Also, please note that the "starter" relays are notorious for going bad. I had one stuck in the "closed" position and would not stop cranking until I disconnected my battery (about 10 miles later). Fried the starter.