Ducati Diavel Service Manual: Checking protection and safety device components
Checking the side stand switch
Remove the switch (1) from the side stand undoing screw (2) and disconnect the main wiring connector from the switch (see paragraph "routing of wiring on frame", sect. 6 - 1).
Use an analogue or digital multimeter (sect. 6 - 11, Using a multimeter to check the electrical systems) to check switch operation (see table).
Note
The same test may be carried out using the "dds" tester (sect. 6 - 11,
Diagnostic instruments). 
0 = Open contact
X = closed contact
Refit switch (1) to side stand and tighten the screw (2) to a torque of 5 nm +/-10 (sect. 3 - 3, Frame torque settings).
Checking the fuses
The main fuse box (1) and the secondary one (2) are located in the tool tray;
to reach the fuse box remove the seat as
specified under sect. 5 - 3 "Removal of the seat".
The fuses are accessed b ...
Other materials:
Changing the clutch fluid
Warning
Clutch fluid will damage painted surfaces if spilled on them. It is
also very harmful if it comes into contact with the skin or
with the eyes; in the event of accidental contact wash the affected area with
abundant running water.
Remove cover (1) and membrane from the clutch fluid res ...
Removal of belly fairing
Loosen and remove the screws (5) and (8) that secure the oil cooler (7) to
the rh (1) and lh (2) belly fairings.
Remove the lh belly fairing (2) by loosening the screws (3) with relevant
washers (4) and the screws (12).
Follow the same procedure to remove the rh belly fairi ...
Changing the brake fluid
Warning
Brake fluid is corrosive and will damage paintwork. Avoid contact
with eyes and skin. In the case of accidental contact,
wash the affected area thoroughly with plenty of running water.
Changing the fluid in the front brake circuit
Remove the cover (1) with the membrane from the front b ...