Water-In-Fuel Sensor - Doosan DX140R Shop Manual

Water-in-Fuel Sensor

Feature Description
The water-in-fuel sensor protects the fuel system by alerting the
vehicle operator that water has accumulated in the fuel filter and
this water mustbe drained. The operator will be warned of a high
water condition by a flashing warning lamp on the dash.
The fuel filter removes emulsified and free water from the fuel as
it passes through the filter media. The removed water is heavier
than fuel and falls to the bottom of the filter canister where it
accumulates. The water-in-fuel sensor is installed in the base of
the fuel filter canister. The sensor consists of two metallic probes
that sense the electrical conductivity of the surrounding solution.
A change in conductivity can be detected when sufficient water
accumulates around the probes and displaces the diesel fuel.
When this happens the ECM lights the warning light on the dash
and Fault Code 418, Water-In-Fuel Indicator High -Maintenance
is logged.
Driver Activation/Deactivation
The driver can notactivate or deactivate the water-in-fuel sensor
feature. This feature can onlybe activated or deactivated by the
TM
Cummins INSITE service tool.
Interaction with other Features and Parameters
This feature does notinteract with any other feature or
parameter.
QSB4.5 Engine SP001671
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