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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Other materials:

Overhaul of cylinder head components
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Set the engine to the configuration described for the "checking and adjusting the valve clearances", previously indicated. Position the tool 88765.1518 On the cylinder head: the part marked "a" should be on the intake side and the part marked "s" should be on the exhaust side. Seat the pl ...

Removal of the cooling system hoses and unions
Loosen the clips (21) that secure the radiator/thermostat sleeve (40) and the radiator/plug sleeve (24) to the water radiators. Loosen clips (25) and (43) that secure the breather pipe (26) to the radiator/plug sleeve (24) and to the left radiator. Loosen the clips (34) securi ...

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