If your multimeter can measure frequency (Hz), you can use this setting in the same way you check for an AC signal. If you don't see any voltage pulses, replace the sensor. The sensor should produce a voltage pulsing signal.
Have an assistant crank the engine for a few seconds while you watch the meter's readout. Make sure to keep your meter lead wires away from engine moving parts during this test. Connect your meter leads to the sensor pins. Set your digital voltmeter to a low range on the AC voltage scale. This will prevent the engine from starting. If necessary, consult your vehicle repair manual. Or disconnect the ignition cable between the ignition coil and distributor. Disable the fuel system by removing the fuel pump fuse or relay. One of the wires should produce around 1.5 volts otherwise, the sensor is not receiving a reference voltage, and needs to be fixed. Touch the DMM red lead to each of the sensor wires on the harness connector you just unplugged. This can be a clean surface on the engine, a metal bracket or the battery negative (-) post. Turn the ignition key to the On position, but don't start the engine. 
Set your digital multimeter to DC voltage scale using a low range. Unplug the CKP sensor electrical connector. Inspect the sensor reluctor wheel for damage. Remove the sensor and check it for metal shavings or filings stuck to the sensor's magnetic tip. POLARIS DIGITAL WRENCH DIAGNOSTIC INTERFACE MODULE 01 10009 MANUAL
Consult your vehicle repair manual for the specification.
If necessary, check the air gap between the sensor tip and the rotor. Check the sensor itself for signs of damage. Check the electrical connector for damage. Make a visual inspection of the harness and connectors between the sensor and the PCM or ignition module. Many times, a failing or inoperative sensor comes from a bad wire or connector. If necessary, consult your vehicle repair manual to locate the sensor on your specific model. 
on the rear of the engine, at the bellhousing of the transaxle near the flywheel ring gear.somewhere around the middle of the engine block.mounted on an engine front cover or timing cover, near the crankshaft pulley or behind the harmonic balancer.But first, locate the sensor.ĭepending on your particular vehicle make and model, you can find the CKP sensor: So make sure to carefully check them before starting to troubleshoot the sensor itself. Many problems with the CKP sensor can be located on the wiring harness or the sensor's connector.
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