VESPA 664787 Service Station Manual page 56

Electrical system
FAULT 5
(FIG. E) If the turn indicators do not work, proceed
as follows:
- Remove the regulator connector, and insert the
tester probes between the contact 5 (yellow-red)
and the ground lead.
- Turn the key switch to ON and check that the
battery is getting voltage. If no voltage is detected,
check the wiring and the contacts on the key
switch and on the battery.
(FIG. F) Repeat the procedure now placing the
tester probes between contacts 5 (yellow/ red) and
6 (black), and check the presence of the battery
voltage with the key switch set to ON. If there is no
voltage, check the regulator ground wiring.
(FIG. G) If the above tests have positive results,
jump the contacts 5 (yellow/red) and 7 (blue/black)
on the connector, set the key switch to ON and
shift the turn indicator switch to the right and left to
see when the lights are steadily on (as they are
powered directly from the battery). If even after this
operation the turn indicators fail to turn on, check
that the wiring is not damaged and the switch
works properly. If these last two tests have a pos-
itive result, replace the regulator because it is cer-
tainly not functioning properly.
FAULT 6
Oil reserve check warning light not working
(FIG H) - Disconnect the voltage regulator con-
nector.
- Supply 12V to the terminal marked with number
5; with a digital tester check that the terminal num-
ber 4 has a similar output (12V) for about 5 sec-
onds.
ELE SYS - 56
Vespa S 50 2T