VESPA GTS Super 125 i.e., Service Station Manual

Page: 76 / 285

- diagnosis LED
The diagnosis led also works as a blinking light to deter theft. This function is activated every time the
ignition switch is turned to "OFF" and it remains active 48 hours so as not to damage the battery charging
process.
When the ignition 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 programming of the electronic control unit.
If the LED is off regardless of the position of the ignition switch and/or the instrument panel is not
initiated, check if:
•
there is battery voltage
•
fuse No. 1, fuse No. 2 and fuse No. 3 efficiency.
•
there is power to the control unit as specified below:
Remove the connector mounting bracket shown in the photograph and disconnect the connector from
the control unit. Check the following conditions:
With the key switch set to OFF:
• there is battery voltage between terminals 7-9
and terminal 9-chassis ground (fixed power sup-
ply). If there is no voltage check that fuse 3 and its
cable are in working order.
With the key switch in the ON position:
• there is battery voltage between terminals 6-7
and terminal 6-chassis ground (fixed power sup-
ply). If there is no voltage, check the ignition switch
contacts, that fuse 2 and its cable are in working
order.
Electrical system
Vespa GTS Super 125 i.e.
ELE SYS - 76