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OPERATION
27
Instrumentation
Mercury Racing requires that the following critical engine functions be
monitored:
•
Oil pressure
•
Engine RPM
•
Oil temperature
•
Water temperature
•
System voltage
•
Guardian fault messages
The use of SmartCraft instrumentation will display all of the above critical
engine functions as well as others not listed. SmartCraft instrumentation
will also display information about power train sensor faults and Guardian
activation.
Warning System
!
CAUTION
Avoid engine damage. Do not operate the engine after a continous horn
is heard, EXCEPT TO AVOID A HAZARDOUS SITUATION.
ENGINE GUARDIAN SYSTEM
The Engine Guardian System monitors the critical sensors on the engine
for any early indications of problems. The system responds to a problem
by emitting a continuous or intermittent horn and, under certain
circumstances, reduces engine power to provide engine protection. When
the key switch is turned "ON", the system monitors horn beeps once to
verify horn operation.
If the Propulsion Control Module (PCM) detects a fault signal from an
engine sensor, it records a fault code.
1. The horn warning can be stopped by turning the engine off. If the horn
continues to sound on restart, the system detected a fault again. See
your Mercury Marine dealer to correct the problem.
2. On restart, if the beeping stops, see your authorized Mercury Marine
dealer to diagnose and clear the fault.
NOTE: The following Table lists only the possible problem areas and not
specific error codes recorded by the PCM. Use a Digital Diagnostic
Terminal (DDT) or Computer Diagnostic System (CDS) to extract specific
problem codes from the PCM.
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