Crankshaft Position Sensor (Pos)

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect crankshaft position sensor (POS) harness connector.
Loosen the fixing bolt of the sensor.
Remove the sensor.
Visually check the sensor for chipping.

Fig 1: Identifying Chipping
Courtesy of NISSAN MOTOR CO., U.S.A.
Check resistance as shown in the figure.

Fig 2: Terminal Resistance Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

If NG, replace crankshaft position sensor (POS).

Fig 3: Checking Resistance
Courtesy of NISSAN MOTOR CO., U.S.A.