Crankshaft Position Sensor
The Crankshaft Position (CKP) sensor is located at the rear left side of the engine. The CKP sensor is located in a hole and is secured with a screw. The sensor receives a 5V reference voltage from the Powertrain Control Module (PCM). A further 2 connections to the PCM provide ground and signal output.
The CKP sensor is positioned adjacent to the reluctor ring, which is an integral part of the drive plate. The reluctor ring has 58 teeth and a section where 2 teeth are missing. The CKP sensor is a Hall effect sensor which uses the missing teeth on the trigger wheel to determine the crankshaft position and rotational speed.
If a fault occurs with the CKP sensor, a Diagnostic Trouble Code (DTC) is registered in the PCM. The engine will continue to operate using data from the Camshaft Position (CMP) sensor until the fault has been corrected.
The PCM uses the signal from the CKP sensor for the following functions:
- Synchronization.
- Determine fuel injection timing.
- Produce an engine speed signal which is broadcast on the FlexRay bus for use by other systems.