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:

Replacing the front phonic wheel sensor
Disconnect the front abs sensor (2) connector (a) from the main electric wiring. Open all the retainer clamps of the front abs sensor cable (2): refer to table of sect. 7 - 6, Flexible wiring/hoses positioning. Loosen retaining screw (1) and remove the front abs sensor (2) with ca ...

Removal of the swingarm
Before removing the parts in question, you must first carry out the following operations: Remove the rear wheel eccentric hub as described in chapter "removal of the rear wheel eccentric hub and rear wheel shaft" of this section. Loosen screws (7) and remove the hose grommets (13), (15) ...

How to start the engine
With the motorcycle off and the dashboard on, the on/off switch is turned to "run off" With the motorcycle and dashboard on, the on/off switch is turned to "run off". To start the engine, simply push the on/off switch up to "run on" and press the black start button. ...

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