Fault codes
Dds: horn diagnosis -> short circuit to ground (s.C. Gnd).
Dashboard: the error "claxon" (horn) is shown on the service display. The eobd warning light activates.
Wiring diagram

Db dashboard connection, s horn button. 5 Blue/white - b/w, 1 red/blue - r/b, db 19 purple/black - v/bk.
Location of connections and components

Location of left hand handlebar switchgear set connection.

Location of horn with relative connection.

Pin numbering for wiring harness side dashboard connector.
Note
Check integrity of electric circuit - short-circuit to vdc = with dashboard on, using a voltmeter, a voltage is measured between the wire tested and ground.
Check integrity of electric circuit - short-circuit to ground = with the battery cables disconnected, using an ohmmeter, continuity is detected between the wire tested and ground.
Check integrity of electric circuit - open circuit = with the battery cables disconnected, using an ohmmeter, no continuity is detected between the two ends of the wire tested.
Low beam lights not working
Turn indicators not workingSteering release error - steering still locked
The activation of this (amber yellow) "warning" indicates
that the hands free system was not able to extract the
steering lock.
Warning
In this case, ducati recommends turning the vehicle
off and on (key-off / key-on) holding the handlebar pressed
down to the end stop. If the signal ...
Resetting turn indicators not possible - accessing dashboard menu not
possible
Fault codes
Dds: no fault code displayed
Dashboard: no fault code displayed
Location of connections and components
Location of left hand handlebar switchgear set connection.
Pin numbering for wiring harness side dashboard connector.
Checks
Test turn indicator reset button function. Wh ...
Disassembly of gear interlock plunger and pawl assembly
Unscrew the interlock plunger screw (5) and remove the seal (6), spring (7)
and the detent ball (8).
Unscrew the clutch-side crankcase half screw (3) and remove the pawl (4),
washer (2) and spring (1).
...