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.
Gear change pedal
When released, the gear change pedal (1, fig. 96)
Automatically returns to rest position n in the centre. This is
indicated by the instrument panel light n (2, fig. 4) Coming on.
The pedal can be moved:
down = press down the pedal to engage the 1st gear and to
shift down. At this point the n ...
Changing and cleaning the air filters
The air filter must be replaced at the intervals described in the "scheduled
maintenance chart" (sect. 4 - 2).
Work on the vehicle right side, loosen screws (1) that secure the intake duct
(2) to the filter box, and the radiator
retaining screw (3); recover the washer (4).
Remove the in ...
Throttle valve operation engine
Introduction
The electric motor actuating the throttle valve for the vertical cylinder is
mounted on the throttle body of the diavel, while
a link rod connects the vertical cylinder throttle valve to the horizontal
cylinder throttle valve. In the electric motor, the
throttle valve position se ...