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:

Front brake lever
Pull the lever (1, fig. 94) Towards the twistgrip to operate the front brake. The system is hydraulically assisted and you only need to pull the lever gently. The control lever (1, fig. 94) Features a dial adjuster (2, fig. 94) For lever distance from the twistgrip on handlebar adjustment. ...

Key-on/key-off using the pin code (immobilizer release)
Key-on can be performed by pressing the button (7) on the hands free lock (1, fig. 77) Without the presence of the keys (3, fig. 77) And (4, fig. 77) And entering the pin code on the dashboard. Key-off can be performed by pressing the button (6) on the handlebar / hands free key (7) / engine ...

Running lights not working
Fault codes Dds: no fault code displayed. Dashboard: no fault code displayed. Location of connections and components (A) low / high beam and parking light connections rear running light and stop light connection. Pin numbering of wiring harness side bbs unit connection. Checks The ...

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