2010 90hp warning tones

[draysult]

I bought a 2010 90hp 4 stroke Mercury 6 months ago. I have used it regularly since then. Last night when throttling above 1/2 throttle, I get a constant warning tone. I don't have any manuals. What are the different tones?

TIA!

 

[qhn]

Focus on the constant tone that yoy have. It is either overheating or having low oil pressure!

 

[draysult]

Focus on the constant tone that yoy have. It is either overheating or having low oil pressure!

How do I differentiate between the two? Exhaust water is cool and oil is full.

Thanks

 

[johnnygjr]

Ground the sending wires from sensors one at a time