Ducati Diavel Workshop Manual page 353

Diagnostic instruments
Insert in the pipe union fitting (2) part no. 875.1.065.1A the fitting (3) part no. 814.1.114.1A, by putting the two
copper gaskets (4). Fit in the threaded hole the fitting (3) of pipe (2), by tightening it fully home. Refit on fitting (3) the
pressure switch (1), with the relevant gasket and reconnect it to connector (F) of the electric system.
Connect the pressure sensor (5), part no. 552.1.039.1A, to the hose (2), in order to convert the pressure reading into
an electric signal.
Turn on the DDS diagnosis instrument (6) referring to the paragraph "Tester power supply".
Connect the power and diagnosis cable (Measurement Module) (7) part no. 97900.0222 to the measurement module
connector (B) of the DDS (6).