Diagnostic Codes - VESPA GTV 250 i.e. 2008 Service Station Manual

Electrical system
Once the system has been programmed, master
key transponder, decoder and control unit are
strictly matched.
With this link established, it is now possible to en-
code new service keys, in the event of losses,
replacements, etc.
Each new programming deletes the previous one
so, in order to add or eliminate keys, you must re-
peat the procedure using all the keys you intend to
keep using.
If a service key becomes uncoded, the efficiency
of the high voltage circuit shielding must be thor-
oughly inspected. In any case it is advisable to use
resistive spark plugs.
Characteristic
Shielded cap resistance
~ 5,000 Ω

Diagnostic codes

The Immobilizer system is tested each time the
Ignition switch is turned from «OFF» to «ON».
During this diagnosis phase a number of control
unit statuses can be identified and various light
codes displayed. Regardless of the code transmit-
ted, if at the end of the diagnosis the LED remains
off permanently, the ignition is enabled. If, howev-
er, the LED remains on permanently, it means the
ignition is inhibited:
1. Previously unused control unit - key inser-
ted: a single 2 second flash is displayed, after
which the LED remains off permanently. The keys
can be stored to memory, the vehicle can be star-
ted but with a limitation imposed on the number of
revs.
2. Previously unused control unit - transpond-
er absent or cannot be used: the LED is on
ELE SYS - 72
Vespa GTV 250 i.e.