Features and Controls
i05142391
Alarms and Shutoffs
• ECM
Electronic Control Module
• DOC
Diesel Oxidation Catalyst
• DPF
Diesel Particulate Filter
• ARD
Aftertreatment Regeneration Device
Shutoffs
The shutoffs are electrically operated or mechanically
operated. The electrically operated shutoffs are
controlled by the ECM.
Shutoffs are set at critical levels for the following
items:
• Operating temperature
• Operating RPM
• Overspeed
• Aftertreatment regeneration
The particular shutoff may need to be reset before the
engine will start.
NOTICE
Always determine the cause of the engine shutdown.
Make necessary repairs before attempting to restart
the engine.
Be familiar with the following items:
• Types and locations of shutoff
• Conditions which cause each shutoff to function
• The resetting procedure that is required to restart
the engine
Alarms
The alarms are electrically operated. The operations
of the alarms are controlled by the ECM.
The alarm is operated by a sensor or by a switch.
When the sensor or the switch is activated, a signal is
sent to the ECM. An event code is created by the
ECM. The ECM will send a signal in order to
illuminate the lamp. Some application may have a
display panel in order to alert the operator.
Your engine may be equipped with the following
sensors or switches:
Coolant temperature
– The coolant temperature
sensor indicates high jacket water coolant
temperature.
Engine oil pressure
– The engine oil pressure
sensor or switch, indicates when oil pressure drops
below rated system pressure, at a set engine speed.
Boost pressure (Intake manifold pressure
– The
intake manifold pressure sensor checks the rated
pressure in the engine manifold.
Intake manifold air temperature
– The intake
manifold air temperature sensor indicates high intake
air temperature.
Atmospheric pressure
– The atmospheric pressure
sensor checks the air pressure in the location that the
engine is operating.
Aftertreatment Alarms
DOC inlet temperature
– The inlet temperature
sensor checks the operating temperature.
DPF inlet temperature
– The inlet temperature
sensor checks the operating temperature.
DPF outlet temperature
– The outlet temperature
sensor checks the operating temperature.
Delta P sensor (Differential pressure)
– The sensor
checks the differential pressure within the system.
ARD temperature
– The sensor checks the
temperature within the burner in the ARD system
Testing
Turning the keyswitch to the ON position will check
the indicator lights on the control panel. All the
indicator lights will be illuminated for 2 seconds after
the keyswitch is operated. Replace suspect bulbs
immediately.
If any lamps stay illuminated or flashes, the fault must
be investigated immediately. The fault will create a
diagnostic code.
Refer to Troubleshooting, “Diagnostic Trouble Code”
for more information.
i05140291
Gauges and Indicators
Your engine may not have the same gauges or all of
the gauges that are described. For more information
about the gauge package, see the OEM information.
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SEBU8609
Features and Controls
Alarms and Shutoffs