PIAGGIO 633929(IT) Service Station Manual page 202

Suspensions
1: PRESSURE SWITCH
2: HORN REMOTE CONTROL
3: FUSE No. 11, 7.5A
Check 7.5 A fuse No. 11 for efficiency. With inter-
face wiring disconnected from the control unit,
check the continuity of the blue - black cable be-
tween pressure sensor connector and the horn
remote control base as indicated in the photo-
graph. Check the continuity between pin 27 and
the remote control base white cable.
SUSP - 30
MP3 125