Crankshaft Position Sensor (2.4L)

Crankshaft position sensor may be referred to as Crankshaft Position (CKP) sensor. Crankshaft position sensor is located on cylinder block, behind generator, near oil filter. Crankshaft contains a crankshaft pulse ring which contains 2 sets of notches ground into the No. 2 counterweight.

As crankshaft rotates, crankshaft position sensor generates pulses due to notch areas on the No. 2 counterweight. When solid area on crankshaft pulse ring aligns with bottom of crankshaft position sensor, voltage decreases to less than .3 volt.

When notch area on crankshaft pulse ring aligns with bottom of crankshaft position sensor, voltage increases to 5 volts. Switching of the voltage generates pulses. These pulses provide an input signal to the Powertrain Control Module (PCM). PCM uses input signal to determine crankshaft position. PCM uses input signal along with other various input signals for controlling fuel injection synchronization and ignition system.