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:

Headlight control
This function allows you to reduce current consumption from the battery, by automatically managing headlight switchingoff. At key-on, the high beam and low beam lights are off. When the engine is started, the low beam lights turn on automatically; from this moment, "normal" operati ...

How to reset the pin code
The pin code can be reset with the dds, i.E. It can be brought to the same condition it was in when the bike came out the factory. It is possible to complete the procedure with the relevant pin code reset function. Once the pin code has been reset it will be necessary to store a new one. In ...

Indicator trip time - trip time
This function shows the vehicle trip time. The calculation is made considering the time travelled since the last trip 1 reset. When trip 1 is reset, the value is set to zero. The active phase calculation occurs when the engine is running and the vehicle is stopped (when the vehicle is not ...

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