Mercury 225 EFI, Service Manual

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WIRING DIAGRAMS
90-884294 OCTOBER 2001 Page 2D-43
If the warning signals stop and a steady stream of water is coming out of the water pump indica-
tor hole, return engine to normal operation. If the warning system is activated repeatedly, have
the outboard checked by your dealer.
OVERSPEED (a)
This message is displayed and the warning horn begins sounding continuously to inform the
driver that the engine speed exceeded the maximum allowable RPM. The system will auto-
matically reduce the engine speed to within the allowable limit.
NOTE: Your engine speed should never reach the maximum limit to activate the system unless
the propeller is ventilating, an incorrect propeller is being used, or the propeller is faulty
WATER IN FUEL (b)
This message will appear and the warning horn will begin sounding a series of four beeps every
two minutes when water in the water-separating fuel filter reaches the full level. Water can be
removed from the filter. Refer to Maintenance Section for filter removal.
FAULT-HORN (c)
This message informs you that the warning horn is not functioning correctly.
RESERVE OIL LOW – 2 STROKE OUTBOARD ONLY (d)
This message is displayed and the warning horn begins sounding a series of four beeps every
two minutes to inform the driver that the oil level is critically low in the engine mounted oil reser-
voir tank. When the oil level gets close to empty, the horn begins sounding continuously and
the Engine Guardian System will start limiting engine power. The display shows percent of re-
serve oil that’s remaining.
The engine mounted oil reservoir tank along with the remote oil tank will have to be refilled
(Refer to Fuel & Oil Section).
FAULT-OIL PUMP (e)
This message is displayed and the warning horn begins sounding continuously to inform the
driver that the oil pump has stopped functioning electrically. No lubricating oil is being supplied
to the engine. Stop the engine as soon as possible. The Engine Guardian system will start limit-
ing the engine power.
NOTE: The throttle will have to be returned to idle to reset the system.
FAULT-INJECTOR (f)
This alarm informs you if one or more of the fuel injectors have stop functioning electrically.
FAULT-IGNITION (g)
This alarm informs you that a problem has developed in the ignition system.
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