PIN AS 1896064 - Caterpillar

ECM____________________Electronic Control Module
DOC____________________Diesel Oxidation Catalyst
DPF____________________Diesel Particulate Filter
ARD____________________Aftertreatment Regeneration DeviceShutoffs
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 regenerationThe particular shutoff may need to be reset before the engine will start.
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 engineAlarms
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 systemTesting
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.