Crankshaft Position Sensor

Crankshaft position sensor is a self-contained unit located on left front of engine. If a fault is present in crankshaft position sensor, Code 11 may set in ECM memory. If Code 11 is set, proceed to TESTS W/CODES article in the ENGINE PERFORMANCE Section.
To test crankshaft position sensor, remove crankshaft position sensor. Leave sensor wiring connected. Using a DVOM, touch negative lead to ground and positive lead to one-degree signal, then to 90/120-degree signal terminals of crankshaft position sensor. See CRANKSHAFT POSITION SENSOR SIGNAL HARNESS TERMINALS table. See Fig 1 .
Rotate sensor by hand. On DVOM, signals should fluctuate between 0-5 volts with sensor rotating. If signal is not present, replace crankshaft position sensor.

CRANKSHAFT POSITION SENSOR SIGNAL HARNESS TERMINALS

Model	One-Degree Signal Terminal	90/120/180-Degree Signal Terminal
Q45	2	1

Fig 1: Identifying Crankshaft Position Sensor Terminals

Courtesy of NISSAN MOTOR CO., U.S.A.