Crankshaft Position Sensor
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2000 Nissan Xterra, 2000 Nissan Sentra, 2000 Nissan Quest, 2000 Nissan Pathfinder, and 2000 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
PCM depends upon crankshaft position sensor for RPM signals. PCM uses signals to determine triggering of power transistors and fuel injectors. See DTC P0335 OR P1336: CRANKSHAFT POSITION (CKP) SENSOR in appropriate SELF-DIAGNOSTICS article.