PIAGGIO XEVO 125 Euro 3 Service Station Manual page 68

Electrical system
The duration of the flash depends on the electronic
control unit program (see figure).
If the LED turns off and remains so when switching
to «ON», check whether there is battery voltage in
the electric control unit.
Connect the immobilizer tester to the diagnosis
socket (see ET4 125 manual) located inside the
battery compartment.
If the serial LED remains off, proceed to check the
control unit supply as follows:
- Disconnect the control unit connector and check
if:
- There is battery voltage between the terminal No.
3 (Red) and the ground connection.
- There is battery voltage between terminal No. 3
(Red) and terminal No. 6 (Negative) as shown in
the figure.
If no voltage is detected, check the wiring to the
battery positive lead and see if the 15A fuse is in
good conditions.
- There is battery voltage between terminals No. 1
and No. 6 with the key switch set to «ON » and the
emergency switch set to «RUN»
If no faults are found, replace the control unit; oth-
erwise, check the wiring and the following compo-
nents:
- Emergency cut-off switch;
- Key switch contacts.
ELE SYS - 10
XEVO 125 Euro 3