Crank Angle Sensor
WARNING: This page is about a different car, the 1989 Nissan Pickup, 1989 Nissan Pathfinder, 1989 Nissan Maxima, and 1989 Nissan 300ZX. However, it is still accessible from the selected car via links, so may be relevant.
Crankshaft angle sensor is a component part of the distributor assembly. To test crank angle sensor, 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 120 degree signal terminals of ECU. Refer to the CRANK ANGLE SENSOR ECU INPUT SIGNAL TERMINALS table. On a bar graph DVOM, one degree signals should measure about 2.3-2.8 peak volts with engine cranking. The 120/180 degree signal should measure about .1-.4 peak volt with engine cranking. If either signal is not present, check harness for short or open circuit. If no problems are found, replace distributor with crank angle sensor.
NOTE:
It is possible to measure crank angle sensor voltage with a conventional DVOM without bar graph function; however, the peak voltage signal may not easily be determined due to the "averaging" of the digital signal.
CRANK ANGLE SENSOR ECU INPUT SIGNAL TERMINALS
| Model | 1° Signal | 120° or 180° Signal |
|---|---|---|
| Maxima | 42 & 52 | 41 & 51 |
| Pathfinder & Pickup | 8 | 17 |
| 300ZX | 8 | 17 |