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Home >> Jeep >> 2009 >> Compass 2WD L4-2.0L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Crankshaft Position Sensor >> Description and Operation >> Description
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Description






DESCRIPTION

The crankshaft position sensor mounts to the rear of the engine block near the transmission.





The PCM uses the Crankshaft Position sensor to calculate the following:

- Engine RPM
- TDC number 1 and 4
- Ignition coil synchronization
- Injector synchronization
- Camshaft-to-crankshaft misalignment (Timing belt skipped 1 tooth or more diagnostic trouble code).

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