SENSOR-CRANKSHAFT POSITION
DESCRIPTION
The Crankshaft Position (CKP) sensor (2) is mounted
into the right rear side of the cylinder block. It is posi-
tioned and bolted into a machined hole.
OPERATION
Engine speed and crankshaft position are provided through the CKP (Crankshaft Position) sensor. The sensor gen-
erates pulses that are the input sent to the Powertrain Control Module (PCM). The PCM interprets the sensor input
to determine the crankshaft position. The PCM then uses this position, along with other inputs, to determine injector
sequence and ignition timing.
The sensor 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 (2) cause a pulse to be generated when
they pass under the sensor. The pulses are the input
to the PCM.
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FUEL INJECTION - 3.7L GAS
KJ