Introduction
The communication antenna enables the hands free system to detect and communicate with the active or passive key.
The active key is detectable within a range of 1.5 Metres, whereas the passive key (or active key with flat battery) can only be detected if placed in contact with the lower part of the clear plexiglas windscreen covering the antenna.
An antenna fault will compromise correct key detection.
Wiring diagram

The communication antenna is connected to the hands free system by two cables and a dedicated connection.
Error codes
"Hands free diagnosis" error: "antenna": antenna not detected (open circuit)
or antenna short circuited. The following icon
appears on the tank dashboard:
Note
Checking the integrity of the electrical circuit entails the following actions:
Short circuit to vdc: with the dashboard on, use a voltmeter to measure the voltage between the wire being tested and ground.
Short circuit to ground: with the battery cables disconnected, use an ohmmeter to check for continuity between the wire being tested and ground.
Open circuit: with the battery cables disconnected, use an ohmmeter to check that there is no continuity between the two ends of the wire being tested.
Electrical characteristics and checking component
The resistance between the two terminals of the component side connection must be approximately 2 ohm.
In the event of fault
In the event of a component fault, the hands free system can no longer detect and recognise the keys. The pin code procedure must be used to start the motorcycle.
Installation location

The image shows the location of the hands free system antenna.
Location of hands free system antenna on antenna side.
Component replacement methods
No special measures are necessary in order to replace the hands free system communication antenna.
The hands free module
On/off switch on handlebarAdjusting the throttle cable
The throttle grip in all steering positions must have free play, measured on
the periphery of the flange of the grip, of 1.5 -
2.0 Mm.
If necessary, adjust using the adjusters (1) and (2) located on the steering
tube on the right side of the motorcycle.
Adjuster (1) adjusts the throttle o ...
Overhaul of the flywheel-alternator assembly
Examine the inner part of alternator rotor (24) for signs of damage. Check
that the starter clutch is working properly and
that the needle races do not show signs of wear or damage of any kind. If there
is any malfunction, remove the whole
assembly.
Disassembling the generator flywheel
U ...
Parking
Park the stopped motorcycle on the side stand.
Turn the handle completely to the left or right.
If this operation is performed within 60 seconds after the
engine stop, the message "waiting for lock" (fig. 120) Will
appear on the display of the instrument panel for approx.
5 Seco ...