Ducati Diavel Service Manual: Exhaust by-pass valve not working correctly
Fault codes
Dds: exvl diagnosis -> position error, potentiometer, short circuit to ground or open circuit (s.C. Gnd or c.O.), Potentiometer short circuited to vdc (potentiometer s.C vdc).
Dashboard: the error "exvl" (exhaust bypass valve) is shown on the service display. The eobd warning light activates.
Wiring diagram
M exhaust bypass valve motor with potentiometer s for position detection, bbs bbs unit connection. 10 Bbs black/blue - bk/b, 15 bbs brown/red - bn/r, 4 bbs yellow/blue - y/b, 18 bbs black/orange - bk/o, 19 bbs black/white - bk/w.
Location of connections and components
Exhaust bypass valve connection.
The image shows the exhaust system. The oxygen sensor for the horizontal cylinder (1) is visible on the right, the oxygen sensor for the vertical cylinder (2) is on the left. The catalytic converter is contained within the silencer, while the by-pass valve is installed in the section of pipe connecting the silencer to the twin tailpipes. A metal cable, controlled by an actuator with electric motor and a position sensor, branches off from the exhaust bypass valve.
Pin numbering of wiring harness side bbs unit connection
Stop light not working
Fault codes
Dds: stop light diagnosis -> stop light error (generic stop light malfunction
indication).
Dashboard: the error "stop light" is shown on the service display. The eobd
warning li ...
Other materials:
Digital rpm indication function
This function displays the number of rpms for improved
accuracy when setting idle rpm.
To access the function it is necessary to view the "setting" menu page 48, using
button (1, fig. 14) ?"
" or (2, fig. 14) ?" " select the "rpm" function and
press ...
Indicating devices
Checking the indicating devices
In the event of a fault, the internal connections of the device must be
checked in all operating conditions. To do this, it is
necessary to disconnect the switch connector from the main wiring harness (sect.
6 - 1, Routing of wiring on frame).
Then analyse th ...
Explanation of the function of the ride-by-wire system
Mechanism
Via metal cables, the throttle grip operates a roller mounted on one end of a
spindle located near the horizontal cylinder
throttle valve spindle.
The aps sensor, which measures the position of the throttle grip itself, is
mounted on the opposite end of this spindle.
A mechanic ...