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PROTECTION OPTIONS
ECU SAFETY SHUTDOWNS AND WARNINGS
Once the engine is started, the engine’s ECU has primary control over the operation of the engine
under safe conditions. If the ECU detects that any of its critical parameters are out of tolerance, the
ECU can take a variety of actions, including derating of the engine horsepower or complete engine
shut down. The display will illuminate the red or yellow LED
as instructed by the ECU
and display any
trouble code
as presented from the ECU
. Some engine manufacturers have unique codes that the
control panel will show in lieu of the J1939 DM1 messaging. Otherwise, codes will be displayed as
J1939 SPN (Suspect Parameter Number) and FMI (Failure Mode Identifier).
Example of Low Oil Pressure shutdown by engine’s ECU
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