Diagnostic Codes; Flash Code - VESPA LX 150 4T Euro 3 Service Station Manual

Electrical system
- Alternately insert all the available black keys and
turn each one of them to "ON" for 2 seconds.
- Insert the MASTER key again and turn it to "ON"
for 2 seconds.
The maximum time to change keys is 10 seconds.
A maximum of 7 service keys (blue) can be pro-
grammed at one time.
Sequence and times must be strictly observed or
it will be necessary to repeat the procedure from
the start.
Once the control unit has been programmed, the
control unit is inseparably matched with the MAS-
TER key transponder.
With this link established, it is now possible to en-
code new service keys, in the event of losses,
replacements, etc. Each new programming dele-
tes the previous one.
If a service key setting is lost, it is essential to
carefully check the efficiency of the high voltage
system:
Shielded cap resistance ~ 5000 Ω.
In any case, it is advisable to use resistor spark
plugs as shown in the figure.

Diagnostic codes

The flash indicating the switching to "ON" (0.7-sec
flash) can be followed by a phase of programmed
failure warnings.
That is, the LED is off for 2 seconds, and then di-
agnosis codes are transmitted with 0.5-sec flash-
es.
After the failure code indication, a steadily on LED
signals that ignition is disabled; see the table:

2-FLASH CODE

Example with programmed electronic control unit,
no transponder and/or aerial malfunction
Ignition disabled-Vehicle immobilised
ELE SYS - 58
Vespa LX 125 - 150 4T Euro 3