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:

Removal of the intake manifold and coolant union
Loosen the clips (f) and remove the hoses (t). Remove the manifolds (25) undoing the screws (21). Loosen the clamp (a) and remove the hose (b). Remove the union (12) and recover the seal (24). ...

Steering head: steering
Screw Steering head Screw Lower rh u-bolt Lower lh u-bolt Bearing Screw Sealing ring Washer Spacer Washer Nut Washer Screw Bottom yoke Dowel Nut Screw Special screw Clip nut Left-hand support Front splashguard Right-hand support Front support S ...

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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