1991 200 yamaha 2 volts at buzzer with key on

[makomecrazy]

when the key is in the on position the alarm sounds (barely) and the multimeter reads 2 volts comming to it any ideas???

[jazzman44]

does it go off when the engine has started

[99yam40]

I thought at key on there was 12 volts to buzzer and the motor con*****ed the ground to sound it

[jazzman44]

check your sensor connections if they are ok check the buzzer they are prone to corrosion its a simple mechanism made up of a thin brass plate that vibrates when power is applied to it open up your control box and give it a clean

[makomecrazy]

its a new buzzer. and it does not go off when engine is started but it does get louder when oil is low . COULD IT BE A LOW VOLTAGE SIGNAL?

[99yam40]

Is it a Yamaha buzzer?

[makomecrazy]

no its not .

[makomecrazy]

could that really be it?

[99yam40]

I have read about a problem like this before caused by a buzzer from radio shack

[makomecrazy]

Yea but 2 volts at it . shouldent there be 0v at it unless something is wrong. Then it should get 12v

[rodbolt17]

should have 12V at the yellow buzzer wire at key on.
the temp switchs and oil alarm module control the ground path.
no ground,no alarm.

[makomecrazy]

wheres the oil alarm moduel?

[rodbolt17]

on a 1991 200, its part of the CDI unit.