Fault codes
Dds: speed sensor diagnosis -> max. Speed (max. Speed error - signal not correct) - minimum speed (min speed error - signal not correct) - congruence (correlation speed error - signal not correct).
Dashboard: the error "speed sensor" is shown on the service display. The eobd warning light activates.
Fault indication
If the dashboard does not receive "vehicle speed" information via the can line:
If:
Or
The error "speed sensor" is shown on the dashboard service display.
Warning
The dashboard speed indicator also displays fixed dashes if vehicle speed exceeds 299 km/h.
Warning
Dtc is disabled in the event of a wheel speed sensor erro
r.
Wiring diagram
Bbs bbs unit connection, db dashboard connection, abs abs connection. Bbs 14 green/purple - g/v, db 9 blue - b.
Pin numbering for wiring harness side dashboard connector.
Pin numbering of wiring harness side bbs unit connection.
Checks
For diagnosing wheel speed sensors, consult the section relative to diagnosing the abs unit.
Check the integrity of the electrical circuit and connections (short-circuits to ground, short-circuits to vdc, open circuits).
If the above test did not identify the problem, contact ducati.
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.
Propagation of wheel speed signals and generation of vehicle speed signal
The diagram illustrates how the vehicle speed information is generated and how it is transmitted to the dashboard.
Using the replicated rear wheel speed signal and the circumference of the wheel itself, the bbs unit calculates the vehicle speed (2 in diagram). This parameter is used by the ducati traction control (dtc) function together with the front wheel speed and the circumference of the front wheel itself, in order to implement engine torque limiting strategies when required.
The vehicle speed calculated by the bbs is transmitted over the can line (3 in diagram) and acquired by the dashboard, which displays the speed information accordingly.
Refitting the front brake system
While refitting the system, pay special attention to the orientation of the
pipe couplings (24) on the pump and the pipes
(13) and (20) on the callipers (9) and (18).
Warning
If incorrectly positioned, the hose can affect brake operation and
foul moving parts. Position the hose as shown in th ...
Removal of the cylinder heads
Using the tool code 88713.2676, Undo the nuts (21) on the cylinder head stud
bolts.
Remove the cylinder head nuts (21) and special washers (22).
Remove the cylinder head assembly by lifting it off the engine studs.
Repeat the same procedure for the other cylinder head. ...
On/off switch on handlebar
Introduction
The on/off switch on the handlebar is used to switch the dashboard on and
off, if a key has been detected, and start the
engine.
With the switch turned to "run off" (centre position), pushing downwards
switches the dashboard on or off (activating
the button inside the switch). ...