PIAGGIO Beverly 500 i.e. Workshop Manual page 228

Injection
YES go to 13 NO go to 12
12 - Replace the revolution sensor.
13 - Reconnect the rpm-timing sensor connector.
Repeat the resistance check through the injection
wiring pin 7, pin 12.
Electric characteristic
7-12 =
680 Ω ± 100 Ω (Model with 2 clamps)
7-12 =
890 Ω ± 130 Ω (Model with 1 clamp)
The value should be very close to that detected directly by the sensor.
YES go to 17 NO go to 14
14 - Higher or infinite resistance.
YES go to 15 NO go to 16
15 - Check the connectors carefully. Disconnect and check the continuity between connector and pin
7-12
Electric characteristic
Connector - 7 =
Continuity
Connector - 12 =
Continuity
Fix the connectors or replace the cable harness.
16
Electric characteristic
Resistance
0
Repair or replace the injection wiring (short circuit)
17 - Check the earth insulation again.
Electric characteristic
7-23 =
INJEC - 228
Beverly 500 i.e.