Mercury 225 EFI, Service Manual

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WIRING DIAGRAMS
Page 2D-20 90-884294 OCTOBER 2001
Engine Overspeed Continuous The warning horn is activated any time engine
speed exceeds the maximum allowable RPM.
The system will limit the engine speed to within
the allowable range. If the overspeed condition
continues, the Engine Guardian System will
place the engine in power reduction. The Guard-
ian system must be RESET before engine can
resume full power. Moving throttle lever back to
idle resets the system. Engine overspeed indi-
cates a condition that should be corrected.
Overspeed could be caused by incorrect propel-
ler pitch, engine height, trim angle, etc.
Sensor out of Range Continuous Engine Guardian System is activated. Power
limit may activate at full throttle speed.
Intermittent Beep Engine Guardian System is activated. Power
limit may restrict engine speed to idle.