Nissan 23731-35U10 Crank Position Sensor

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To proceed with the CKP POS sensor testing, remove the sensor and turn the ignition key Off before reconnecting the electrical connector to the sensor. Using an appropriate probe, backprobe the white wire terminal of the sensor connector, connecting the positive lead of a voltmeter to the probe and the negative lead to a suitable engine ground point. Turn the ignition key On and briefly touch the sensor's tip with a metal object, such as a screwdriver, then quickly remove it. The voltmeter should display 5.0 volts upon contact and rapidly drop to zero volts when the metal object is withdrawn.