PIAGGIO Beverly Tourer 125, Service Station Manual

Page: 70 / 278

Pick-up resistance value: 105 ÷ 124 Ohm
If a break in the circuit is found, check again the flywheel and the engine ground connectors (see engine
manual). If non-conforming values are measured, replace the Pick-Up; otherwise, repair the cable har-
ness.
In case conforming values are measured, try replacing the control unit (without programming) and make
sure the failure has been solved by checking sparks are produced in the spark plug; only then program
the control unit.
- HV primary coil check
Disconnect the control unit connector and check
that the cable between terminals No. 3 and No. 8
is not interrupted (see figure).
If non-conforming values are measured, check
again the HV primary coil directly on the positive
and negative terminals. If non-conforming values
are measured, repair the cable harness or else re-
place the HV coil.
Electric characteristic
High voltage coil primary resistance value
High voltage coil primary resistance value: 0.4 ÷
0.5 Ohm
HV coil secondary check
Disconnect the spark plug cap from the HV cable
and measure the resistance between the HV cable
terminal and the HV coil negative terminal (see
figure).
If non-conforming values are measured, replace
the HV coil. To carry out a more complete diagno-
sis, check the peak voltage with the multimeter
adaptor.
Electric characteristic
Resistance value
High voltage coil secondary resistance value ~
2000 ± 300 ohm
Electrical system
Beverly 125
ELE SYS - 70