VESPA GTV 250 i.e. 2008 Service Station Manual page 156

Injection
- H.V. coil
- Injector
The control unit is fitted with a self-diagnosis sys-
tem connected to a warning light on the instrument
panel.
Failures are detected and restored by the diag-
nostic tester.
In any case, when the fault is no longer present,
data storage is automatically wiped clean after 16
cycles of use (cold starting, running at regular en-
gine temperature, stop).
The diagnostic tester is also required to adjust the
idle mixture.
Specific tooling
020922Y Diagnosis Tool
The MIU injection-ignition system carries out
checks on the rpm indicator and the electric fan for
radiator cooling.
The MIU control unit has a decoder for the anti-
theft immobilizer system.
The MIU control unit is connected to a diagnostic
LED on the instrument panel, that also carries out
the deterrent flashing functions.
The MIU control unit power supply is furthermore controlled by the emergency switch; that is to provide
further safety for the vehicle.
INJEC - 156
Vespa GTV 250 i.e.