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The MerCathode system has a 5‑amp fuse that connects to the positive (+) terminal on the controller. If the fuse is open, the
system will not operate, resulting in a loss of corrosion protection.
a
c
b
Visual and Audio Warning Systems
Service Engine Light and OBD‑M MIL Kit
Boats powered by emissions control technology (ECT) catalyzed engines must be equipped with a SmartCraft‑enabled gauge
capable of displaying the service engine icon, or a dash‑mounted service engine light. Malfunction indicator lamp (MIL) kits
containing a dash‑mounted service engine light and a special harness that connects to the engine harness may be purchased
separately.
The service engine icon or MIL will provide a visual indication of a malfunction with the engine's emission control system and
will remain illuminated while the OBD‑M fault is active.
Testing the OBD-M Malfunction Indicator Lamp (MIL)
1.
Turn the ignition switch to the on position without cranking the engine.
2.
The service engine icon and MIL will remain illuminated for four seconds if the visual indication system is functioning
correctly.
Audio Warning System
IMPORTANT: The audio warning system alerts the operator that a problem has occurred. It does not protect the engine from
damage.
Most faults cause the warning horn circuit to activate. How the warning horn activates depends on the severity of the problem.
There are two warning horn states:
•
Caution
•
Critical
There is also an alarm that sounds if the helm has not been properly configured using the G3 service tool.
90-8M0113859
DECEMBER 2015
eng
a -
MerCathode
b -
Red/purple wire
c -
5‑amp fuse
50534
SC 1000 gauge and service engine light
Section 1 - Getting to Know Your Power Package
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Page 21
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