2012-07-24 1211071
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Engine Diagnostics
When choosing this selection, the display will query the engine(s) ECU, as illustrated below,
and provide feedback on any diagnostic codes that have been activated and stored in the ECU
for service needs.
The following is a list of field definitions contained on the ENGINE DIAGNOSTICS
screen:
Active Faults/Stored Faults
Shows the number of active faults and which fault number is currently being displayed. To
advance to the next fault, touch [NEXT] and [PREV] to go back to the previous fault. Touching
[BACK] returns to the Settings Menu.
• SPN –"Suspect Parameter Number" - fault code
If not translated into text by the display, see the engine manufacturer's literature for the
definition of the SPN number.
• FMI – “Failure Mode Indicator” - fault code
The FMI is defined by SAE J1939. If not translated into text, see the SAE standard, or
the engine manufacturer's literature.
• Description Field – Most common SPN's and FMI's have text for the description stored
in the display. If there is no text, then this SPN and FMI must be defined by referring to
the engine manufacturer, or the SAE J1939 standard.
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