APRILIA SCARABEO 500 2008 Service Station Manual page 244

Injection
Check there is voltage between the Green-Red
cable of the remote control base and the ground
lead.
Upon switching to "ON", check that there is battery
voltage for about two seconds between the Red-
Brown cable of the pump connector and ground
connection, with the pump connector disconnec-
ted. Otherwise, check the continuity of the Red-
Brown cable between the pump connector and the
remote control base.
Check the efficiency of the ground line of the fuel
pump by measuring the continuity between the
pump connector Blue cable, system side, and the
ground connection.
If, upon switching to "ON", the pump continues to
turn 2 seconds after activation, check, with both
the control unit and the injection load remote con-
trol disconnected, that the Red-Yellow cable (pin
20 on the interface wiring) is insulated from the
ground connection.
Specific tooling
020331Y Digital multimeter
Circuit leak test
Install the appropriate tool to check fuel pressure with the pipe fitted with a pressure gauge.
INJEC - 244
SCARABEO 500