2.14.8 Fuel filter water detection sensor
The water presence sensor H is situated in the fuel filter, which is
there to indicate the presence of water in the fuel.
Water, if present in the fuel, because of its greater specific weight
separates and settles in the lower part of the filter where there is a
specific sensor that, by means of the ECU activates an alarm
signal on the dashboard.
The butterfly valve nut
M
situated in the lower part of the body
sensor enables the elimination of any water present in the fuel and
prevent malfunctions on components of the injection circuit.
2.14.9 Fuel temperature sensor on the fuel injection pump
The fuel temperature sensor L is situated on the high-pressure
fuel injection pump.
The fuel temperature sensor L , measures the temperature of the
fuel entering the pump at high pressure. The signal sent to the
ECU is analogue.
The resistance detected by the ECU is proportional to the fuel
temperature.
Important
Refer to Par. 2.9.3
2.14.10 Oil pressure switch
Oil pressure switch N is assembled on the crankcase.
It is a N/C sensor, calibrated at 0.6 bar ± 0.1 bar.
With oil low pressure the sensor closes the electrical circuit and
the warning lamp in the panel board switches on.
2.14.11 Coolant temperature sensor
The
P
coolant temperature sensor of the coolant circuit is applied
to the cylinder head on the side of the thermostatic valve.
It is used by the ECU to obtain information regarding the coolant
temperature (via PIN
R
) and control the warning light high-
temperature signal and control the electric fan of the coolant
radiator.
Indicator light operation temperature +106°C / +108°C.
NOTE
:
R
indicates the pin where it is possible to measure
electrical resistance.