Gilera GP 800 i.e. Service Station Manual page 109

GP 800 i.e.
Electrical system
If the horn does not work:
1) Check the working order of fuse No. 1.
2) Check contacts «A» and «B» of the key switch.
3) Check the main relay.
4) Check that the Brown-Black cable of the main
relay is earthed.
5) With the key switch set to «ON» check if there
is voltage between the Orange cable of the main
relay and the ground connection.
6) If there is no voltage, check the continuity of the
cable harness with the fuse box.
7) Check the working order of fuse No. 8.
8) Check the horn button contacts.
9) Check if there is voltage between the Yellow-
Pink cable of the horn button, with the latter press-
ed, and the ground connection. If there is no
voltage, check the continuity of the cable harness
between the main relay, fuse box and button.
10) Check the continuity of the Yellow-Pink cable
between the horn and the button, and whether the
Black cable of the horn is earthed. Repair the cable
harness if necessary.
ELE SYS - 39