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:

Refitting the rear suspension
Lubricate the thread and underside of the special screw (1). Insert the lower side of the shock absorber into the swingarm and insert the screw (1). Tighten the screw (1) to a torque of 45 nm +/- 5% (sect. 3 - 3, Frame torque settings). Lubricate bushes (5) and (6) with recommended gr ...

Entering pin code function for vehicle release
This function turns on the motorcycle "temporarily" in the case of hf (hands free) system "malfunctions". To activate the function, press the "emergency" hands free button (7, fig. 87) If the motorcycle cannot be turned on using the normal starter button. After ...

Rh switch
Red on/off switch. Black engine start button. The switch (1) has three positions: Centre: run off. In this position, the engine cannot be started and all electronic devices are off. Pushed down: on/off. In this position, the system can be turned on (key-on) and off (key-off). Pus ...

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