Vehicle speed sensor

VEHICLE SPEED SENSOR

This sensor is positioned at the differential output, by the left driveshaft coupling and transmits information concerning the vehicle speed to the speedometer: the signal is then sent to the engine control unit.

The sensor is the Hall effect type and is calibrated so that a given distance corresponds to each impulse: it is therefore possible to determine the speed of the vehicle on the basis of the frequency of the impulses.

POWER ASSISTED STEERING SENSOR

This sensor, fitted on the pump outlet high pressure pipe, consists of a pressure switch which closes when the hydraulic pressure exceeds a set value corresponding to the steering in the end of travel position: the information is used to managing the idle speed control actuator in advance of the absorption of power due to the steering.

DETONATION SENSOR

This is a piezoelectric type sensor fitted on the cylinder block/crankcase, symmetrical in relation to the pairs of cylinders 1-2 and 3-4. This position is determined by the need to detect the onset of detonation in the same way in all cylinders.

When the engine is knocking, vibrations of a particular frequency are produced in the cylinder block/crankcase which are transformed, by the sensor, into a voltage signal which is proportional to their intensity.

Wiring connector