View Parameters/States; Abs System Operation Information; Abs Diagnosis - Ducati MONSTER 821 Workshop Manual

ABS system operation information

The operation of the system is based on the analysis of the speed signals for front and rear wheels; the
system is automatically deactivated if either of these signals is missing.
Note
In the event of the ABS control unit detecting a fault in the ABS electronic management system, it activates
the specific fault warning indicator on the instrument panel and restores conventional braking functionality
without ABS.
Hydraulic faults in the brake system and faults not directly related to the ABS system (e.g.: worn brake
pads) cannot be detected by the ABS control unit.
Important
The operation of the system is based on the values read for the front and rear wheel speeds; take great
care not to damage the phonic wheels and relative speed sensors when removing the wheels or when
working close to these components; the phonic wheels damage may compromise the operation of the
system and cause dangerous malfunctions.

ABS diagnosis

The diagnostic function of the ABS ascertains the functionality of the main system components via
hardware/software tests, but cannot modify the operating parameters of the ABS strategy.
From the model menus of the DDS2.0 diagnosis software, select MONSTER family, then model 821, and
then select bike model year and press Global Scan button.
Now connect tester to bike CAN diagnostic socket, to locate connector refer to the video displayed in screen
showing the diagnostic connector position on bike.
Wait for the correct configuration to be loaded and, when requested, switch the vehicle to key-on state.
Tester communicates to the different control units present on bike, ABS control unit included; wait for the
scan to be completed.
Among the displayed information a "dot" icon is shown: based on its colour, it refers to validated errors
inside the different control units.
In particular, if errors are stored, icon will be yellow or if errors are currently present, icon will be red, while
if no errors are present, icon will be green.
To make a deeper analysis of the ABS control unit, select ABS control unit and SELF-DIAGNOSIS or, as an
alternative, make a double selection on the same item with your mouse.
Once in this configuration, a number of parameters and states of the ABS control unit and information
concerning the control unit itself may be selected and displayed.
The INFO menu allows reading the software version loaded on the control unit as well as other information.
Select the function "View parameters and states"
This function allows the tester to display the following ABS system parameters and states:
Viewable parameters
Front wheel speed The speed value for the front wheel is displayed in Km/h.
Rear wheel speed The speed value for the rear wheel is displayed in Km/h.
System voltage The system voltage value, measured across the terminals of the ABS unit, is displayed
value in Volts
Viewable states
Hydraulic pump Indicates if the electric motor of the hydraulic pump inside the ABS unit is functioning
motor state or not.
Valve relay state Displays the state of the main valve relay inside the ABS unit.
Rear inlet valve Displays the state of the normally open EV1 rear inlet valve (OFF if open, ON if
state closed).
Front inlet valve Displays the state of the normally open EV4 rear inlet valve (OFF if open, ON if closed)
state
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