Ducati Diavel
Free Service and Repair manuals

Ducati Diavel Service Manual: Injection relay

Introduction

The fuel pump, injectors and ignition coils are all powered via the injection relay. The relay also sends voltage to the engine control unit, which enables activation of the relay itself.

Component assembling position

Injection 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 injection relay. 85 Brown/black - bn/bk injection relay activation, 87 brown/white-bn/w ecu input voltage, u direct power to injectors, ignition coils and fuel pump, r battery power (+30), 30 and 86 brown - bn.

In the event of fault

In the event of an injection relay fault, the engine stops (if running) or will not start. The relay is not commanded by the ecu.

Fault codes generated and possible correlated faults

Fault codes generated by the engine control unit and displayed by the dds (fuel injection 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 "fuel injection" and the eobd warning light activates.

Possible correlated faults: the engine stops (if running) or will not start. Check:

Using the dds, activate the ignition coils, the fuel pump or the injectors. The injection relay is driven and its contacts (pin 87 and pin 30) should close.

If none of the aforementioned tests identify the problem and the relay is in proper working order, replace the engine control unit.

Component replacement methods

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

Side stand button
Introduction The side stand button is located on the side stand. Together with the signal from the clutch button and the neutral signal generated by the gear sensor (transmitted to the engine cont ...

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 ...

Other materials:

Overhauling the front forks
Note It is advisable to loosen the top cap (14) when the fork is still fitted to the motorcycle. Note The specific tools for the revision of the fork, are described in sect. 3 - 4, Specific tools for the frame. Loosen the spring preload adjuster before unscrewing the plug (14). Unscrew th ...

Operating principle of dtc
The bbs receives the front and rear speed information from the abs over the can. Then, the bbs sends the vehicle speed information to be displayed on the dashboard over the can. If the tangential speed of the rear wheel exceeds the tangential speed of the front wheel by a given percentage, t ...

Bleeding of the abs hydraulic system
If some "sponginess" is detected on the brake control, due to air bubbles in the system, bleed the system, as indicated in sect. 4 - 3, Changing the brake fluid. Before bleeding a brake pump, move back the calliper pistons, as indicated in (sect. 4 - 3, Changing the brake fluid) to Drain in ...

2019 | www.dudiavel.com |