Table of Contents
Advertisement
Section 2 - Getting to Know Your Power Package
6. The Quicksilver MerCathode system has a 20 amp in‑line fuse in the wire which
connects to the positive (+) terminal on controller. If the fuse is blown, the system will
not operate resulting in a loss of corrosion protection.
Warning Horn Signals
Most faults will cause the warning horn circuit to activate. How the warning horn activates
depends on how serious the problem is. There are four warning horn states:
•
Caution ‑ horn signal varies with product line and calibration. Minimal guardian.
•
Warning ‑ horn signal varies with product line and calibration.
•
Severe ‑ horn is beeping constantly.
•
Critical ‑ horn is beeping constantly and guardian will be at forced idle.
In addition, depending on the gauge package, there will be warning icons and fault
messages on the dash mounted gauges.
Audio Warning System
Your Mercury MerCruiser power package may be equipped with an Audio Warning System.
The Audio Warning System will not protect the engine from damage. It is designed to warn
the operator that a problem has occurred.
The audio warning system will sound with a continuous horn:
•
Engine oil pressure is too low
•
Engine temperature is too hot
•
Seawater pressure is too low
The audio warning system will sound with an intermittent beeping:
•
The sterndrive oil level is too low
•
Engine guardian activates
•
A sensor failure is detected
•
A communication failure within a CAN system occurs
A continuous horn indicates a critical fault. Operating the engine during a critical fault can
damage components. If the warning horn emits a continuous beep, do not operate the
engine unless avoiding a hazardous situation.
If the alarm sounds, stop the engine immediately. Investigate the cause and correct it, if
possible. If you cannot determine the cause, contact your authorized Mercury MerCruiser
dealer.
TESTING THE AUDIO WARNING SYSTEM
1. Turn the ignition switch to the "ON" position without cranking the engine.
Page 32
mc79977
NOTICE
90-899883234 JANUARY 2008
Advertisement
Table of Contents
Troubleshooting
