Table 2
Warning Lamp
Shutdown
Lamp
Lamp Status Description of lamp status Engine Status
ON ON
Lamp check When the engine start switch is turned to the “ON” posi-
tion both lamps will illuminate for 2 seconds only.
The engine has not been
started.
OFF OFF
No faults There are no active diagnostic faults. The engine is running normally.
ON OFF
Active diagnostic
fault
An active diagnostic fault has been detected. The engine is running normally.
ON FLASHING
Active diagnostic
fault
A serious active diagnostic fault has been detected and
an engine derate has been invoked.
The engine is running but the
engine has been derated.
FLASHING OFF
Warning One or more of the engine protection values has been
exceeded.
The engine is running normally.
FLASHING FLASHING
Derate and
warning
One or more of the engine protection values has been
exceeded.
The engine is running but the
engine has been derated.
ON ON
Engine shutdown One or more of the engine protection values has been
exceeded or a serious active diagnostic fault has been
detected.
The engine is shutdown or shut-
down is imminent.
i05546770
Monitoring System
If the Shutdown mode has been selected and the
warning indicator activates, engine shutdown
may take as little as 20 seconds from the time the
warning indicator is activated. Depending on the
application, special precautions should be taken
to avoid personal injury. The engine can be re-
started following shutdown for emergency ma-
neuvers, if necessary.
NOTICE
The Engine Monitoring System is not a guarantee
against catastrophic failures. Programmed delays
and derate schedules are designed to minimize false
alarms and provide time for the operator to stop the
engine.
The following parameters are monitored:
• Coolant temperature
• Intake manifold air temperature
• Intake manifold air pressure
• Oil pressure
• Pressure in the fuel rail
• Engine speed/timing
Programmable Options and
Systems Operation
If the Warning/Derate/Shutdown mode has been
selected and the warning indicator activates,
bring the engine to a stop whenever possible. De-
pending on the application, special precautions
should be taken to avoid personal injury.
The engine can be programmed to the following
modes:
““Warning””
The “Warning” lamp and the warning signal (orange
lamp) turn “ON” and the warning signal is activated
continuously in order to alert the operator that one or
more of the engine parameters is not within normal
operating range.
““Warning/Derate””
The “Diagnostic” lamp turns “ON” and the warning
signal (red lamp) is activated. After the warning, the
engine power will be derated. The warning lamp will
begin to flash when the derating occurs.
The engine will be derated if the engine exceeds
preset operational limits. The engine derate is
achieved by restricting the amount of fuel that is
available for each injection. The amount of this
reduction of fuel is dependent on the severity of the
fault that has caused the engine derate, typically up
to a limit of 50%. This reduction in fuel results in a
predetermined reduction in engine power.
SEBU8731-04
31
Operation Section
Monitoring System
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