Mercury Racing HP525 EFI Bravo Sterndrive Series, Operation, Maintenance & Warranty Manual

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OPERATION
eng
37
Fault Type and Related Warning Signal
• Critical ‑ Steady horn
• Severe ‑ 5 beeps, each 3 seconds long
• Warning ‑ 3 beeps, each 1.5 seconds long
• Caution ‑ 2 beeps, each 1 second long
• To stop an activated horn warning, turn off the engine. If the
horn continues to sound on restart, the system detected a
fault again. See your Mercury Marine dealer to correct the
problem as soon as possible.
• If on restart the beeping stops, the problem does not need
immediate attention but will require you to see your
authorized Mercury Marine dealer to diagnose and clear the
fault.
If the Propulsion Control Module (PCM) detects a fault signal
from an engine sensor, it records a fault code. A Digital
Diagnostic Terminal (DDT) or Computer Diagnostic System
(CDS) is required to extract specific problem codes from the
PCM.
WARNING SYSTEM TABLE
The following table is divided into four columns. The Possible
Cause column lists items that could be initiating the fault. The
Horn column lists the type of audible alert that will be given if a
fault is detected. If the boat is equipped with System View, the
Monitor Display column indicates whether or not a message will
be given on the screen. The Guardian Activated and Engine
Power Reduced column indicates if the PCM will reduce engine
power or force the engine into an idle based on the severity of
the problem. The table lists only the possible problem areas and
not specific error codes or messages recorded by the PCM.
Possible Cause Horn
Monitor
Display
Guardian
Activated
and Engine
Power
Reduced
PCM Error Steady Horn Yes Forced Idle
Guardian Invoked Steady Horn Yes No