Mercury HP 500 EFI Bravo XR/XZ/III, User Manual, Page: 47 / 148

43 500 EFI Bravo
OPERATION
Audio Warning System
Your MerCruiser power package may be equipped with an Audio
Warning System.
NOTE: Testing the System: The buzzer will sound when the ignition
switch is turned to the RUN position, prior to cranking the engine.
Once the engine starts, the buzzer should stop.
CAUTION
Avoid engine damage. Do not operate engine once a continu-
ous buzzer has sounded EXCEPT TO AVOID A HAZARDOUS
SITUATION. The Audio Warning System will not protect the
engine from damage. It is designed to warn the operator that
a problem has occurred.
When the buzzer sounds with the engine running, stop engine
immediately. Investigate cause and correct it, if possible. If cause
cannot be determined, consult your Authorized MerCruiser Dealer.
The audio warning system buzzer will sound continuously if any of
the following occur:
1 Insufficient Oil Pressure.
2 Excessive Engine Temperature.
3 Insufficient Drive Lubricant.
4 Low Voltage (At or below 10V).
The audio warning system will beep steadily if the ECM detects a
fault code from one of the engine sensors. A fault code will be set in
the ECM.
1 The beeping warning can be stopped by turning the engine off.
If beeping continues on restart, a fault code was detected again.
Correct problem before further operation.
2 On restart, if the beeping has stopped, a fault code has been set
in the ECM and will need to be diagnosed and cleared by an Au-
thorized MerCruiser Dealer.