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INSTALLATION DIRECTIVEMAY 2006
41
V08 ENT M75
-
M11
-
M12
WARNING Indication light
The ECU carries out a control activity on the operating
conditions through the analysis of the detected operating
parameters; it evaluates the behaviour of the single signals
emitted by the sensors and classifies the situation, according
to predetermined threshold, activating the red indication
light (9 figure 45).
Blinking indication light - warning level:
Lighting cycle of 0.6 s and pause of 0.24 s.
It indicates that the value is slightly above the normal
threshold; the user of the vessel does not notice any
difference in the engine behaviour.
Indication light constantly On - derating level:
It indicates that the value is significantly above the normal
threshold; the maximum power of the engine is reduced to
protect its intactness. The user of the vessel can notice the
reduction of the power of the engine.
NOTES
Only the current anomalies enable the behaviour specified
above; a temporary anomaly causes the lighting of the
indication light, according to the modalities illustrated, for
the whole period the anomaly is present. The emission code
stops when the operating conditions are restored, while
the data concerning the anomaly are stored in the failure
memory of the ECU.
The signalling is available on the relay box only, and does not
involve any other indications on the instrument panel.
The stored information are able to be decoded and erasable
by the IVECO SERVICE TOOL.
SHUTDOWN (preliminary)
When the most critical thresholds exceed their normal
values, it can be enabled the forced engine shutdown.
The next time the engine is started, if the normal operation
are restored, there will not be any lighting signalling, while
the data concerning the anomaly are stored in the failure
memory of the ECU.
Parameter list that can cause warning, derating or shutdown
conditions:
Engine coolant high temperature
Intake air high temperature
Engine oil low pressure
Engine overspeed
Fuel high temperature
Engine oil low temperature
Engine oil high temperature
Rail low pressure
Rail high pressure
Loss on the high pressure fuel line
Intake air high pressure
Intake air low pressure
Power supply voltage
Signalling maintenance interval expiration
The lighting of the indication lights MAINTENANCE (8
figure 45), caused by the ECU, indicates the need to perform
the periodical lubricating oil replacement.
When the operation is performed, it is necessary to press
the button (4 figure 45) to restore the counter and begin a
new operating cycle. The signalling is available on the relay
box only, and does not involve any other signalling on the
instrument panel.