Ignition Circuit; Specific Tooling - VESPA LX 50 Workshop Manual

Vespa LX 50

Ignition circuit

1) Check the state of the spark plug (clean it with
a metallic brush, remove all incrustations, blow it
with compressed air, and replace it if necessary).
2) Without removing the stator, perform the checks
described below:
After a visual inspection of the electrical connec-
tions, carry out the measurements on the charging
coil and pick-up (see table), and check for con-
tinuity using the special tester, 020331Y.
If the continuity checks or the inspections on the
coil and pick-up are incorrect, proceed by replac-
ing the stator, otherwise replace the ECU.
Remember to detach the ECU wirings when the
engine is not running.

Specific tooling

020331Y Digital multimeter
1 Red cable (1) and White cable (2)
1 Red cable (3) and Green cable (4)
1
2
Voltage regulator check
Voltage regulator
A fault in the voltage regulator can cause the fol-
lowing problems depending on the type of fault:
1) Blow out of the lighting system bulbs.
2) Failure of the lighting system.
3) Excessive battery charging (blowing of main
fuse).
4) Battery recharging failure.
5) Failure of the turn indicators.
P - U C
ICK P
Specification
R
ECHARGING COIL CHECK
Specification
C
ONTINUITY CHECK
Specification
White cable - Engine
White cable - Frame
(F A)
HECK IGURE
(F B)
IGURE
800 ÷ 1100 Ohm
Electrical system
Desc./Quantity
90 ÷ 140 Ohm
Desc./Quantity
Desc./Quantity
Continuity
Continuity
ELE SYS - 51