Ducati Diavel
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Ducati Diavel Service Manual: The battery charging circuit and power distribution

On the diavel, the +15v (key on power) voltage does not come from a conventional ignition key, but from pin 30 of the hands free relay. This relay is switched to closed state by the hands free unit when the latter enables power on for the ignition and engine. The hands free relay receives +30v voltage (battery voltage), protected by a general 30a fuse.

The three phase alternator has three windings (l1, l2, l3), connected to one another in a "triangle" or "delta" configuration. The electrical terminals r, s and t are connected to the voltage regulator.

The battery charging circuit and power distribution


The drawing illustrates the "triangle" or "delta" configuration connection of the three windings of the three phase alternator.

The voltage regulator is constructed with specific electronic circuits (using mosfet instead of scr diodes) which limit operating temperature and, as a result, improve reliability. The regulator can withstand a maximum current of 50a (maximum current for the regulator used on sbk models is 35a) and has integrated waterproof electrical connections.

In the event of incorrect battery voltage (too low or too high), the message "battery" is shown in the service display. The dds also indicates if an excessively low or high battery voltage is detected (battery voltage diagnosis: high voltage, low voltage).

In the event of a battery charging circuit fault, check the following in the order given:

Riding modes
The rider may select between four different riding modes (sport, touring, urban and enduro) from the dashboard and via the "turn indicator reset" button (3). Each riding mode contains settings for ...

Ground connection locations
The negative cable, which is normally connected to the negative pole of the battery, is fastened to the crankcase. From here, the cable branches off and splits up within the electrical system to ca ...

Other materials:

Fault indication
The dds (diagnosis ducati system) indicates all active errors and all inactive but stored errors gathered by the bbs. A simplified summary of the active errors is also shown in the master dashboard service display when the dashboard is switched on. Simultaneously, the eobd warning light is als ...

Removing of the rear brake control
Warning The brake master cylinder manufacturer advises against servicing the brake master cylinder due to the safety critical nature of this component. Incorrect overhaul can endanger the rider and passenger. Maintenance operations on these units are limited to renewal of the following par ...

Changing bulbs
Changing the headlight bulbs Before replacing a burnt out light bulb, ensure that the replacement bulb has the same voltage and power rating as specified for the lighting device in question (sect. 3 - 1.1, Lights/instrument panel). Warning The halogen light bulbs in the headlight become hot ...

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