Section 2 - Getting to Know Your Power Package
Page 36 90-864197076 NOVEMBER 2008
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 open, the system will not operate and will not protect against corrosion.
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Audio Warning System
IMPORTANT: The audio warning system alerts the operator that a problem has occurred. It does not protect the engine from
damage.
Your Mercury MerCruiser power package may be equipped with an audio warning system. Most faults cause the warning horn
circuit to activate. How the warning horn activates depends on the severity of the problem.
There are three warning horn states:
• Caution
• Severe
• Onboard Diagnostic Marine (OBDM) fault
Caution
If a caution is detected, the audio warning system will sound for six one‑second intervals.
a - Horn (on or off)
b - Time (in seconds)
Below are some examples of a caution fault:
• Drive oil is low (sterndrive models only)
• Sensor failure
Severe
IMPORTANT: If you experience a severe fault, contact your authorized Mercury MerCruiser dealer.
If a severe fault is detected, the audio warning system will sound for six seconds, turn off for six seconds, then sound for six more
seconds.
a - Horn (on or off)
b - Time (in seconds)
Below are some examples of a severe fault:
• Transmission fluid temperature is too hot
• Engine oil pressure is too low
• Engine temperature is too hot
• Seawater pressure is too low
ON ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1
1
1
1
1
1
1
1
1
1
1
OFF
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