VESPA 633844 IT, Service Manual

Page: 71 / 308

Checks and inspections
This section is devoted to the checks on the electrical system components.
Immobiliser
The electronic ignition system is controlled by the
control unit with the integrated Immobilizer sys-
tem. The immobilizer is an anti-theft system that
allows the scooter to be operated only when it is
started with coded keys recognised by the control
unit. The code is integrated in a transponder in the
key block. This allows the driver clear operation
without having to do anything other than just turn-
ing the key. The Immobiliser system consists of the
following components:
- Control unit
- Immobilizer aerial
- master and service keys with built-in transponder
- H.V. coil
- Diagnostic LED
The diagnostic LED also works as a deterring
blinker. This function is activated every time the
ignition switch is turned to the "OFF" position, or
the emergency stop switch is turned to the "OFF"
position. It remains activated for 48 hours in order
not to affect the battery charge.
When the key switch is turned to "ON", it interrupts
the function of the immobiliser lamp and a start
enable lamp comes "ON".
The duration of the flash depends on the program-
ming of the electronic control unit
If the LED is off regardless of the position of the
ignition-key switch and/or the instrument panel is
not initiated, check:
•
there is battery voltage
•
that fuse 1 and fuse 8 are in good con-
dition.
Vespa GTV 250 i.e.
Electrical system
ELE SYS - 19