Ducati Diavel
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Ducati Diavel Service Manual: Throttle valve actuator motor relay

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

Throttle valve actuator motor relay


A injection relay; b etv relay (throttle valve actuator motor), c radiator fan relay, d engine control unit.

Connection wiring diagram

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.

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Other materials:

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Checking the camshafts and supports
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Refitting the primary drive gears and checking backlash
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