Oil pressue gauge connection

[Scubadoo]

Hi All, my oil pressure has a reading when the engine is off (but reads normally when running) so need to check the connections etc. Does anyone know where the oil pressure gauge sensor is located on the Volvo AD31 engine and is there a separate sensor for the oil pressure alarm. I can obviously look when next on the boat, but to save time or if I have trouble finding it, worth checking beforehand. Thanks.

Also any thoughts what could cause a reading, plan to check connections and if that doesn't help replace the sensor.

 

[Mr Googler]

Volvo Penta Exploded view / schematic Electrical System and Instruments: C AD31B - MarinePartsEurope.com

0-10bar is the pressure gauge sender

0.7bar the low alarm sender....this linked the warning light and audible alarm.?

 

[Scubadoo]

Perfect, thank you Farsco, just what I needed to know.