Ducati Diavel
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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

Exhaust by-pass valve not working correctly


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

Location of connections and components


Exhaust bypass valve connection.

Exhaust by-pass valve not working correctly


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.

Exhaust by-pass valve not working correctly


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 ...

Diagnostic instruments
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Other materials:

Traction control (dtc) deactivated
The activation of this (amber yellow) "warning" indicates that dtc (ducati traction control) has been turned off. Note In this case, ducati recommends being very careful when riding as the vehicle behaviour will be different in comparison to when operating with the traction control ...

Removal of the engine
In order to remove engine you must first remove a series of other components from the motorcycle. Most of these removal procedures are described in the relative sections of this manual. The following flow chart illustrates the logical sequence in which the parts are to be removed from th ...

Refitting the clutch-side crankcase cover
Clean and degrease mating surfaces on the clutch-side crankcase half cover and crankcase and ensure that locating bush (12) and the o-ring (11), located in correspondence with the oil way, are installed in the crankcase. Apply an even, regular bead of ducati liquid gasket (a) on the mating ...

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