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Operating Section
3.4 Engine Controller-Alarms & Codes
With J1939 engines, the engine ECU manages all alarms, derates and shutdowns. The control panel
serves as a fault code reader providing lamp illuminations, alarm codes and alarm messages. Below is an
example of an engine ECU shutdown for low oil pressure.
Alarm Indications
1) No engine shutdown with alarms
2) Yellow lamp illumination
3) Parameter blinks on display
J1939 Codes
The list of J1939 codes is extensive. A list of common codes is available on the following pages or
by visting http://www.controlsinc.com/support/J1939SPNFMICODES.pdf
Control Panel Alarms & Shutdowns
Alarms and shutdowns can also be provided by the control panel. These are in addition to engine
ECU shutdowns. Panel controlled alarms and shutdowns are available for the following:
1) Low Oil Pressure (Alarm & Shutdown)
2) High Engine Temperature (Alarm & Shutdown)
3) Overspeed (Shutdown Only)
4) Fuel Level (Alarm & Shutdown)
5) Battery Voltage (Alarm Only)
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