Tab. 2.36; Fig. 2.39 - Kohler KDI Series Workshop Manual

2.14.5 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.
2.14.6 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.
2.14.7 Oil pressure switch
Oil pressure switch N is assembled on the crankcase.
It is a N/C switch, calibrated at 0.6 bar ± 0.1 bar.
With oil low pressure the switch closes the electrical circuit
and the warning lamp in the dashboard switches on.
2.14.8 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.

Tab. 2.36

CHARACTERISTICS
Temperature °C
-40
0
+140
ED0053029590 _07
R min Ω R max Ω
38,313 52,926
5,227 6,623
0,067 0,076
TECHNICAL INFORMATION
M

Fig. 2.39

Fig. 2.40
Fig. 2.41
R
Fig. 2.42
H
L
N
P
2
49