PIAGGIO Beverly 500 i.e. Workshop Manual page 250

Injection
020481Y Control unit interface wiring
Electric characteristic
Light blue/green-22 =
0 Ω (continuity)
Brown-yellow-1 =
0 Ω (continuity)
Orange-light blue-11 =
0 Ω (continuity)
YES go to 8 NO go to 7
7 - Repair or replace the injection wiring.
YES go to 6
8 - Check the earth insulation of the three circuit lines.
Electric characteristic
22-23 =
Ω infinite (>1M)
1-23 =
Ω infinite (>1M)
11-23 =
Ω infinite (>1M)
YES go to 10 NO go to 9
9 - Repair or replace the injection wiring
YES go to 8
10 - Connect the special tool to the control unit.
Set the switch to "ON" with switch to "RUN" and side stand raised.
INJEC - 250
Beverly 500 i.e.