VESPA GTV 250 i.e. 2008 Service Station Manual page 184

Injection
11
The system is integrated with the injection and it is a high-efficiency inductive type ignition.
The control unit manages two significant parameters:
- Ignition advance
This is optimised at once according to the engine revs, engine load, temperature and ambient pressure.
- Magnetisation time
The coil magnetisation time is controlled by the control unit. The ignition power is increased during the
engine start-up phase.
The injection system recognises the 4-stroke cycle so ignition is only commanded in the compression
phase.
Specific tooling
020331Y Digital multimeter
Check that the injection load 10A fuse No. 3 is in
good conditions.
Check that the 7.5A fuse No. 2 for the live control
unit is in good conditions.
Check there is voltage between pins 22 and 26 of
the interface wiring for around two seconds when
switching to «ON».
Check the resistance of the primary coil between
pin 22 of the interface wiring and the green black
cable of the injection load solenoid base with the
control unit disconnected and the solenoid discon-
nected.
Resistance of the primary = 0.5 ± 8% Ohm
INJEC - 184
Specification
Electric fan relay
Vespa GTV 250 i.e.
Desc./Quantity