Jeep Workshop Manuals
Grand Cherokee 2WD V6-3.7L (2008)
Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Crankshaft Position Sensor > Component Information > Description and Operation > Description > Page 1354
Crankshaft Position Sensor: Description and Operation
Engine speed and crankshaft position are provided through the CKP (Crankshaft Position) sensor. The sensor generates pulses that are the input sent to
The sensor (3) is a hall effect device combined with an internal magnet. It is also sensitive to steel within a certain distance from it.
A tonewheel (targetwheel) is bolted to the engine crankshaft (1). This tonewheel has sets of notches (2) at its outer edge.
The notches (3) cause a pulse to be generated when they pass under the sensor. The pulses are the input to the PCM.
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