APRILIA SCARABEO 500 2008 Service Station Manual page 254

Injection
Check the power supply line of the injection load
remote control drive coil: upon switching to "ON",
make sure there is battery voltage for 2 seconds
between the Red-Yellow cable and the Green-Red
cable of the remote control base. If there is none,
check the continuity of the Green-Red cable be-
tween the fuse box and the remote control base
and check the continuity of the Red-Yellow cable
between pin 20 of the control unit and the remote
control base.
NOTE
CONTINUITY TESTS MUST BE CARRIED OUT
WITH THE COMPONENTS DISCONNECTED.
(BATTERY, REMOTE CONTROL SWITCHES,
CONTROL UNIT, FUSES, ETC.).
Check there is voltage between the Green-Red
cable of the remote control base and the ground
lead.
Check there is voltage between pins 22 and 26 of
the interface wiring for around two seconds upon
switching to "ON"
INJEC - 254
SCARABEO 500