Electrical System
General
The engines have a comprehensive electrical engine
management system. This automatic system monitors
engine speed as well as the electrical and fuel systems
and the engine cooling and lubrication functions. The
system consists of a number of switches and sensors
which activate an alarm or shutdown (optional) if a fault
is detected in the engine.
Supply voltage is 24 V.
WARNING!
Always stop the engine and break the current using the
main switches before working on the electrical system.
Isolate shore current to the engine block heater,
battery charger or accessories mounted on the engine.
Electrical wiring, Check
Make sure electrical connections are tightened, dry
and free from oxide. If necessary, spray these
connections with water-repellant (Volvo Penta all-
round oil).
Main switch
The main switches must never be turned off until the
engine has been stopped. Breaking the circuit between
the generator and the batteries while the engine is
running can damage the generator. For the same
reason, the charge circuits must never be switched
while the engine is running.
IMPORTANT!
Never disconnect the current with the main switches
when the engine is running, the alternator and
electronics could be damaged.
Fuses
The engine is equipped with a semi-automatic fuse
(8A) which cut the current if overloaded. The fuse is
located in the junction box on the engines service side.
The semi-automatic fuse are re-set by pressing the red
button, once any faults have been attended to.
IMPORTANT!
If the fuse trips frequently, an authorized Volvo Penta
workshop should be contacted to investigate the cause
of the overload.
P0013731
Maintenance
47713337 03-2021 © AB VOLVO PENTA
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