Crankshaft Angle Sensor

Crankshaft angle sensor is part of distributor. If a fault is present in crankshaft angle sensor, Code 11 may be set in ECU memory. If Code 11 is set, proceed to TESTS W/CODES article in the ENGINE PERFORMANCE Section.
To test crankshaft angle sensor, remove distributor. Leave sensor wiring connected. Using a logic probe or DVOM with an analog bar graph function, touch negative lead to ground and positive lead to one degree and 90/120/180 degree signal terminals of ECU. See CRANK ANGLE SENSOR SIGNAL HARNESS TERMINALS table. See Fig 1 or Fig 2 .

Fig 1: Identifying Crank Angle Sensor Terminals (G20)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Crank Angle Sensor Terminals (M30)
Courtesy of NISSAN MOTOR CO., U.S.A.
Rotate sensor by hand. On a DVOM, one-degree signals should measure about 2.3-2.8 peak volts with sensor rotating. The 45/60-degree signal should measure about .1-.4 peak volt with sensor rotating. If either signal is not present, replace crank angle sensor.

NOTE: It is possible to measure crank angle sensor voltage with a conventional DVOM without bar graph function; however, peak voltage signal may not easily be determined due to "averaging" of signal.

CRANK ANGLE SENSOR SIGNAL HARNESS TERMINALS

Model	1° Signal Terminal	90°/120°/180°Signal Terminal
G20	"A"	"D"
M30	3	4
Q45	1	2