PIAGGIO Beverly 500 i.e. Workshop Manual page 251

Beverly 500 i.e.
Measure voltage between terminals 1 and 22 of the special tool.
Specific tooling
020481Y Control unit interface wiring
Electric characteristic
1-22 =
5±0.2 V
YES go to 12 NO go to 11
11 - Check the control unit connector.
Replace the control unit, if necessary.
YES go to 10
12 - Connect the throttle valve position sensor connector.
Repeat the voltage measurement between terminals 1 and 22 of the special tool.
Electric characteristic
1-22 =
5±0.2 V
YES go to 13 NO go to 14
13 - Measure voltage between terminals 11 and 22. Gradually open the throttle valve and check that
the voltage value increases progressively.
N.B.
BY WAY OF AN INDICATION, VOLTAGE MAY VARY FROM APPROX. 700MV AT MINIMUM, AND
ABOVE 4V AT MAXIMUM.
Electric characteristic
11-22 =
V (progressive variation)
Injection
INJEC - 251