Crankshaft Position Sensor: Description

Fig 1: Locating Crankshaft Position Sensor

Courtesy of DAIMLERCHRYSLER CORP.

The crankshaft position sensor mounts to the engine block near the starter.

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

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