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 180 (4-cylinder) degree signal terminals of ECU. See 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 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	180° Signal
Pathfinder & Pickup	8	17
Pulsar NX XE	22 & 32	21 & 31
Sentra	22 & 32	21 & 31
Stanza	8	17
240SX	31 & 40	22 & 30

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Crank Angle Sensor

Use the Manual With the Right Hardware

When to See a Mechanic

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