Ducati Diavel
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Ducati Diavel Service Manual: Starter motor relay

Introduction

When the rider presses the start button, with all the safety conditions required to enable engine start met, the engine control unit enables the relay that activates the starter motor.

Component assembling position

Starter motor relay


Connection on starter motor relay.

Connection wiring diagram

Connection wiring diagram


Mt starter motor, ccm engine control connection. 4 Starter motor relay activation, blue/black - b/bk, a key on power (+15 from hands free relay 30), r battery power (+30), 3 red/black - r/bk, m black - bk, b black - bk.

In the event of fault

In the event of a starter motor relay fault, the engine will not start.

Fault codes generated and possible correlated faults

The engine control unit generates no fault code in the event of a starter motor relay fault.

No errors are indicated on the dashboard.

Possible correlated faults: the starter motor cannot be operated. Check:

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.

If none of the tests described above identifies the problem and the power supply and ground for the engine control unit are in correct working order, replace the engine control unit.

Component replacement methods

No special measures are necessary in order to replace the starter motor relay.

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Radiator fan relay
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Other materials:

Refitting the crankshaft/connecting rod assembly
Install the connecting rod assembly (6) and (2) in the crankcase, carry out the shimming and crankcase half reassembly procedure as described in sect. 9 - 9.2, Reassembly of the crankcase halves. Important Make sure that the connecting rods (2) are correctly positioned in the cylinders. Incor ...

Key-on/key-off using the key on the hands free lock with the passive key
Key-on can be performed by pressing the button (7) on the hands free lock and with the presence of the passive key (4, fig. 77). Note The passive key (4, fig. 77) Has a range of a few cm, therefore the key (4, fig. 77) Must be positioned near the antenna (2). Remove the seat (see "remova ...

Indicating devices
Checking the indicating devices In the event of a fault, the internal connections of the device must be checked in all operating conditions. To do this, it is necessary to disconnect the switch connector from the main wiring harness (sect. 6 - 1, Routing of wiring on frame). Then analyse th ...

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