How to Tell If the Crankshaft Positioning Sensor Isn't Getting Power

Turn the ignition to the "ON" position and place the vehicle in first gear (manual) or in park (automatic). Apply the emergency brake and wait at least 60 minutes for the engine to cool down.

Locate the crankshaft sensor. The location of this sensor may vary slightly depending upon the make/model of the vehicle, but it is always on the engine block near the crankshaft, usually a few inches above the oil pan. Consult a repair manual for your specific vehicle if it is difficult to locate.

Depress the plastic locking tab on the crankshaft sensor's electrical connector and remove it from the sensor.

Turn on the digital multi-meter and set it to "Volts DC."

Probe the positive voltage wire (usually pink or orange) on the sensor's connector with the positive (red) probe on the multi-meter. Ground the black multi-meter probe by touching it to the engine block or a ground wire on near engine.

Look at the readout on the multi-meter. It should read at least 11.5 to 12 volts. If it reads less than this, the crankshaft sensor is not receiving adequate power.