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2023 OWNER’S MANUAL
EPDM Diagnostics
The EPDM is a type of PDM designed to make engine diagnostic
checks easier and more convenient for quick, on-the-water fixes.
To access the EPDM screen, select EPDM Diagnostics from the
Diagnostics page under System Settings.
The EPDM screen displays critical engine and electrical system
operating information. For each engine function, the screen
displays amperage draw and digital switch status. Digital switch
status is designated by green, red, and gray indicators.
• A green indicator denotes that the digital switch is
functioning properly.
• A red indicator denotes that there is a problem with the digital
switch and that it has tripped.
• A gray indicator denotes that the digital switch is currently
unused or is not receiving power.
To reset a digital switch that has tripped, press the RESET button
next to the system with a fault. To reset the entire EPDM, press the
RESET ALL button in the bottom right corner of the screen.
If a digital switch continues to trip multiple times in one outing, this
indicates a serious electrical issue. In such cases, the boat should
be taken to an authorized MasterCraft dealer for repair.
The EPDM and digital switches are designed to protect the engine
and electrical system from damage. If a switch has tripped and
continues to trip even after resetting the EPDM, it may be a sign of
a larger electrical issue. The boat should be taken to an authorized
MasterCraft dealer for diagnosis and repair.
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