Escape 2WD L4-2.5L Hybrid (2010)
Crankshaft Position Sensor: Description and Operation
ENGINE CONTROL COMPONENTS
Crankshaft Position (CKP) Sensor
The CKP sensor is a magnetic transducer mounted on the engine block adjacent to a pulse wheel located on the crankshaft. By monitoring the
crankshaft mounted pulse wheel, the CKP is the primary sensor for ignition information to the PCM. The pulse wheel has a total of 35 teeth spaced 10
degrees apart with one empty space for a missing tooth. By monitoring the pulse wheel, the CKP sensor signal indicates the crankshaft position and
speed information to the PCM. By monitoring the missing tooth, the CKP sensor is also able to identify piston travel in order to synchronize the
ignition system and provide a way of tracking the angular position of the crankshaft relative to a fixed reference. The PCM also uses the CKP signal to
determine if a misfire has occurred by measuring rapid decelerations between pulse wheel teeth.
Crankshaft Position (CKP) Sensor
