PIAGGIO MP3 500 i.e. SPORT Service Station Manual page 277

MP3 500 i.e. SPORT Business_LT_ ABS-ASR_EU_USA (2015)
With the control unit and the injector disconnected,
check if there is continuity in the Red-Yellow cable
between pin 5 of the control unit connector and the
injector connector.
Switch to «ON» and check if there is voltage, with
injector disconnected and control unit connected,
between the Black-Green cable of the injector con-
nector and the ground lead.
With injector disconnected and the injector load
solenoid disconnected, check the continuity of the
Black-Green cable between the injector connector
and solenoid base.
Inspecting the injector hydraulics
To check the injector, remove the inlet manifold by
removing the three fixing screws at the head and
the three screws connecting the control unit to the
manifold.
Injection
INJEC - 277