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Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Electronic Engine Controls - V8 S/C 5.0L Petrol -- Range Rover/L405) >> Electronic Engine Controls - V8 S/C 5.0L Petrol >> Electronic Engine Controls (Description And Operation) >> Description And Operation >> Description >> Camshaft Position (CMP) Sensor

Camshaft Position (CMP) Sensor

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The Camshaft Position (CMP) sensors are Magneto Resistive Element (MRE) sensors that allow the Powertrain Control Module (PCM) to determine the angular position of the camshafts. MRE sensors produce a digital output which allows the PCM to detect speeds down to zero.

The four CMP sensors are installed in the front upper timing covers, one for each camshaft.

Each CMP sensor is secured with a single screw and sealed with an O-ring. On each CMP sensor, a three pin electrical connector provides the interface with the engine harness.

The head of each CMP sensor faces a reluctor ring attached to the front of the related Variable Camshaft Timing (VCT) actuator.

If an exhaust CMP sensor fails, the PCM disables the VCT of both exhaust camshafts.

If an intake CMP sensor fails, the PCM disables the VCT of both intake camshafts. This can result in reduced engine performance and slow to start. A failed CMP sensor will not prevent the engine starting.

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