Sensor

Jaguar: X350 (XJ) 3.0 V6 Petrol from VIN...G00442 to H32732 (2003-09) • X351 (XJ) 3.0 V6 Petrol from VIN...V00001 (from 2009) • XF 3.0 V6 Petrol (from 2008) • X-Type 3.0 V6 Petrol (2001-09) • S-Type 3.0 V6 Petrol (1999-2007)

to detect engine speed and crankshaft position. Fitted to oil sump

This is an inductive type sensor. It consists of a magnet and a coil wound around the magnet. It is triggered by reference points passing the sensor tip. The reference points can be pins mounted to the flywheel in the form of a trigger disc or relucter or on a camshaft. These will divide the 360 degrees rotation of the engine into segments that the engine control can use for the ignition system or for the start of Injection. Each time a reference point passes the tip of the sensor it disturbs the magnetic field creating an AC voltage in the coil.The AC voltage is sent as a signal voltage back to the engine control unit. The crankshaft sensor or engine speed sensor will have 2 or 3 pins. The 3rd pin is used for a screen. The screen suppresses any interference. The engine management light will be triggered if the crankshaft sensor moves outside of normal operating values. A fault with this sensor may inhibit engine startup.