Introduction
The throttle valve actuator motor is powered by the engine control unit. The engine control unit receives the necessary power from a specific relay.
Component assembling position
A injection relay; b etv relay (throttle valve actuator motor), c radiator fan relay, d engine control unit.
Connection wiring diagram
Ccm engine control connection, t throttle valve actuator motor relay. 85 Throttle valve actuator motor relay activation, light blue/green - lb/g, 87 ecu power input for throttle valve actuator motor, red/brown r/bn, 30 and 86 red/purple - r/v, r battery positive (+30).
In the event of fault
In the event of a throttle valve actuator relay fault, the ecu cuts motor power and the throttle valves close (see chapter operating principle and characteristics of the ride-by-wire system in this section).
Fault codes generated and possible correlated faults
Fault codes generated by the engine control unit and displayed by the dds (etv relay diagnosis):
Note
Check integrity of electric circuit - short-circuit to vdc = with dashboard on, using a voltmeter, a voltage is measured between the wire tested and ground.
Check integrity of electric circuit - short-circuit to ground = with the battery cables disconnected, using an ohmmeter, continuity is detected between the wire tested and ground.
Check integrity of electric circuit - open circuit = with the battery cables disconnected, using an ohmmeter, no continuity is detected between the two ends of the wire tested.
The dashboard service display shows the error "etv relay" (throttle valve actuator motor relay) and the eobd warning light activates.
Possible correlated faults: the engine does not start, cuts out or remains running at idle speed and will not accelerate.
Check:
The throttle valve actuator motor may be actuated into one of the three preset positions (0%, 50%, 100%) using the dds. During motor actuation, the throttle valve actuator motor relay is driven.
If none of the tests described above identify the problem and the throttle valve actuator relay is in proper working order, contact ducati.
Component replacement methods
No special measures are necessary in order to replace the throttle valve actuator motor relay.
Disassembly of the gearbox shafts
Place the shaft in a vice in such a way as to facilitate the disassembly
operations.
Important
Take care not to invert the positions of the shims on reassembly:
this would potentially lead to jamming when using the gear selector control,
making it necessary to reopen the engine
crankcase.
D ...
Timing system
Central external cover
Air filter
Horizontal cylinder timing belt cover
Screw
Filter support
Screw
Washer
Nut
Tensioner pulley assembly
Circlip
Camshaft pulley
Tensioner pin
Idler pulley assembly
Timing belt
Nut
Key
Spacer
Camshaft pulley
Driveshaft pulley ...
Operating principle
The ducati abs brake system manages the front and rear brakes separately. A
pulse generator (phonic wheel), with a
ring of slots, is fixed onto each wheel. On the left calliper mounting bracket
of the front fork and on the rear brake calliper
holder plate are hall effect sensors which detect t ...