Ducati Diavel Workshop Manual page 198

Indicating devices
Checking the right-hand handlebar switch
To remove the right-hand handlebar switch, undo the retaining screws (1) and disconnect the wiring connector from the
electric system.
The colours mentioned in the following descriptions refer to the colours of the wires from the switch and not to the colours
of the wires of the main electric system.
Engine Stop button
Using a multimeter, check for electrical continuity across the RED/WHITE AND RED/BLACK cables (see Sect. 6 - 11, Using
a multimeter to check the electrical systems, related to the multimeter operation). When the switch is in the RUN
position, there should be electrical continuity between the two wires. When the switch is in the OFF position there should
be no electrical continuity between the two wires.
If these conditions are not met, the ENGINE STOP switch is not working correctly and must be renewed.
STARTER button
Proceed as described for the engine stop button and check for electrical continuity across the BLUE/WHITE AND BLACK
cables when the STARTER button is pressed (see Sect. 6 - 11, Using a multimeter to check the electrical systems related
to the multimeter operation). If there is no continuity, the STARTER switch is defective and must be renewed.