PIAGGIO 633823 Service Station Manual page 66

Electrical system
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 ignition
switch is turned to the "ON" position, the deterring
blinker function is deactivated. Subsequently, a
flash confirms the switching to the "ON" status.
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
fuses 6,7,10 are in working order
there is power to the control unit as
specified below:
Remove the connector support bracket shown in
the photograph and disconnect the connector from
the control unit. Check the following conditions:
With the key switch set to OFF:
if there is battery voltage between ter-
minals 6-26 and terminal 6-chassis
ground (fixed power supply). If there is
no voltage check that fuse 6 and its ca-
ble are in working order.
With the key switch in the OFF position:
there is battery voltage between termi-
nals 5-26 and terminal 5-frame earth
(fixed power supply). If there is no volt-
age, check the key switch contacts,
that fuse no. 10 and its cable are work-
ing order.
ELE SYS - 16
MP3 250 i.e.