Bold reference numbers in this section identify parts not shown in the figures alongside the text, but which can be found in the exploded view diagram.

The Ducati Diagnostic System (DDS) is used for diagnosis of the injection-ignition system via a serial connection. The system is also equipped with functions to test various devices on the motorcycle. The DDS tester can be used to measure current and voltage on any electrical device, to perform tests on individual components and to measure pressure and temperature values.

The self-diagnosis module (B) enables communication between the DDS tester (1) and the motorcycle’s on-board electronic control unit (ECU).

The top connection panel has 6 connection sockets with the following functions:

The bottom connection panel has 3 connection sockets with the following functions:

You can connect a printer to the DDS tester (1) to print test reports: connect the printer to the serial port (COM1) (F) located on the top connection panel of the tester (1).

The tester requires a power supply of between 9 and 16 Volts D.C.

When using the tester, take care never to allow the power supply to fall below the minimum voltage: this situation could occur during engine starting and idling on motorcycles in which the battery is not in perfect working order. If the tester detects a power supply voltage of less than 9 Volts, the current procedures will be aborted; when the voltage returns to within the acceptable tolerance limits the procedure must initiated again from the beginning.

This operation, which is performed using the DDS tester, has the advantage that it can be carried out on both timing belts with the engine still installed on the frame. An optical reader is connected to the DDS. The optical reader has a green LED that serves to determine that the reader is correctly positioned in front of the belt to be tested. It is also equipped with an infrared transmitter (A) and receiver (B) designed to detect oscillations of the belt when caused to vibrate with the flick of a finger.

Take the measurement on section (21) of the horizontal belt as described in the paragraph “Measuring timing belt tension”.

Turn the crankshaft through 270° in the direction of rotation of the engine (so that the piston of the vertical cylinder is at TDC of the power stroke) and repeat the procedure used for the horizontal cylinder, measuring the tension on section (22) of the vertical cylinder timing belt.

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (Measurement Module) (3) to the measurement module connector (E) on the DDS tester (1).

Aim the central green LED of the sensor (15) at the mid-point of the belt run, with the reader parallel to the belt and at a distance of about 1-1.5 cm from it.

On the DDS tester (1), select the “Measurement module” function by pressing the corresponding icon; then press the “Belt Tension” icon followed by the “Start” icon to access the “Mechanical belt tension” screen.

The socket to which the cable (Measurement Module) (3) is to be connected is indicated on the screen with a capital letter: A, B or C.

Do not flick the belt several times repeatedly, as the minimum time necessary for the DDS tester to take a reading is 1 second.

Correct tension values are as shown in Sect. C 1.1, Timing system/valves and must be checked with the engine cold: apply the installation values when fitting a new belt, and the reset values when belt tension reaches 70 Hz.

The timing belts can become slack during normal operation. When checking belt tension, if the reading is less than 70 Hz, restore to the specified reset values (Sect. C 1.1, Timing system/valves).

Once the correct belt tension value has been obtained, tighten the bolts (25) to the specified torque (Sect. C 3, Engine torque settings).

The linear throttle position sensor is mounted on the throttle body and cannot be adjusted. It is therefore necessary to teach the ECU the angle corresponding to the zero position of the position sensor itself, as follows.

Remove the seat (Sect. E 3, Removal of the seat).

In this position you can teach the ECU the angle of the position sensor. To do this, use the DDS tester and follow the procedure described below.

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (2) to the diagnostics connector (A) on the tester and to the diagnostics socket (B) on the motorcycle.

Enter the general functions menu by pressing the icon “Menu 1” (A).

Press the “Select vehicle” icon and, on the next screen, press the “Select motorcycle” icon; select the motorcycle model and confirm, then select the version and confirm.

Select “Engine electronics” and press the “Confirm” icon (C). Next, press the “Self-diagnosis” icon to access the corresponding function.

On completion of the operation, the message “Was the operation was completed successfully?” will appear; press “Confirm” (C).

If any problems were encountered during the operation, the tester will display the relative error messages: each message must be confirmed, (by pressing the “Confirm” icon (C)), or rejected (by pressing the “Exit” icon (D)).

Once the reset has been performed, the ECU will be associated with the motorcycle's throttle body. Replacement of the throttle body, the throttle position sensor or the ECU must always be immediately followed by a new reset procedure.

Refit the seat (Sect. E 3, Refitting the seat).

Connect the inserts of the exhaust gas analyser code 88713.1010 to the outlets on the exhaust pipes using the fittings (19).

Check:

Start the engine and wait for the engine temperature to reach 100 °C.

When the engine temperature reading reaches 100 °C, carry out the adjustment operations described below.

The idle speed must be between 1250±1350 rpm (1300±50):

If the engine is shut off before proceeding with adjustment of the CO level, wait three minutes after restarting for the enrichment phase to finish and for the lambda sensors to start working.

If the idle speed is high and cannot be corrected by adjusting the air bypass screws, check the seals under the throttle body, in particular check for cracks or other damage in the intake manifolds and the latter are firmly secured to the engine, cuts in the pressure sensor pipes, etc.

Idle speed adjustment takes priority over balancing the vacuum pressures downstream of the butterfly valve. Differences in pressure between the horizontal and vertical cylinder are therefore acceptable, provided that the idle speed is adjusted correctly.

Connect the Measurement Module cable (3) to the Measurement Module connector on the DDS tester as described in the paragraph “Description of the Ducati Diagnostic System instrument”.

Switch on the DDS tester; see the paragraph “Tester power supply”. Enter the “Measurement module” function. Press the “Cylinder synchronisation” icon.

The socket to which the Measurement Module cable (3) is to be connected is indicated on the screen with a capital letter: A, B or C.

Press the “Reset” icon (G), then connect the sensors (4) and (5) to connectors (A) and (C) of the cable (3) and to the vacuum/pressure pipes (6).

The values may be displayed in two different ways: in numerical form or in graphic form; to select the desired display type, press the “Value display” icon (F). The values can be reset by pressing the “Reset” icon (G).

To adjust the balance (within the tolerance range of 260 mbar to 270 mbar), turn the bypass screws (20) until the two lines on the graph coincide, if in graphic mode, or until identical numerical values are displayed, if in numerical mode.

Correct balance is obtained when the two lines of the graph are very close together or when the two values are within the specified tolerance range.

Insert the fitting (9) into the connection on the hose (12), interposing the two copper sealing washers (20). Insert the fitting (9) of the pipe (12) in the threaded hole (M10x1 mm) of the right crankcase cover and screw it fully home. Refit the pressure switch (19) on the fitting (9) along with its seal, and reconnect the wiring connector (A).

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (Measurement Module) (3) to the measurement module connector (B) on the DDS tester (1).

On the DDS tester (1), select the “Measurement module” function by pressing the corresponding icon; then press the “Pressure Test” icon (D) followed by the “Start” icon (E).

The socket to which the cable (Measurement Module) (3) is to be connected is indicated on the screen with a capital letter: A, B or C.

The values may be displayed in three different ways: in one numeric form and in two graphic forms; to select the desired display type, press the “Value display” icon.

The measured value is indicated alongside the letter (A) or (C) identifying the cable used for the measurement: i.e. if you used connector (A) of the cable (3), the value measured will displayed next to the letter (A) on the screen.

(Minimum oil temperature = 80 °C)

1100 to 1300 rpm

greater than 0.8 bar.

3500 to 4000 rpm

greater than 4 bar.

The maximum pressure must never exceed 6.0 bar.

Excessively high pressure may indicate that the relief valve is stuck. Excessively low pressure, on the other hand, may be caused by the relief valve being stuck in the open position, the relief valve spring being too weak, or a faulty oil pump. Other causes are excessively worn seals and gaskets or a badly worn engine.

Remove the tool and refit the pressure switch (19) along with its seal. Tighten the pressure switch to the specified torque (Sect. C 3, Engine torque settings).

Excessive or insufficient pressure, or an excessive difference between the two cylinders, will result in a reduction in engine performance and can lead to component failure.

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (Measurement Module) (3) to the measurement module connector (B) on the DDS tester (1).

On the DDS tester (1), select the “Measurement module” function by pressing the corresponding icon; then press the “Cylinder Compression” icon (D) followed by the “Start” icon (E).

The socket to which the cable (Measurement Module) (3) is to be connected is indicated on the screen with a capital letter: A, B or C.

Fit the fuel pressure test pipe (17), connecting one end (F) to the flange and the other (G) to the fitting (E): in this way, the fuel pressure can be measured at the test outlet (H).

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (Measurement Module) (3) to the measurement module connector (E) on the DDS tester (1).

On the DDS tester (1), select the “Measurement module” function by pressing the corresponding icon; then press the “Pressure Test” icon (L) followed by the “Start” icon (M).

The socket to which the cable (Measurement Module) (3) is to be connected is indicated on the screen with a capital letter: A, B or C.

The values may be displayed in three different ways: in one numeric form and in two graphic forms; to select the desired display type, press the “Value display” icon (N).

The measured value is indicated alongside the letter (A) or (C) identifying the cable used for the measurement: i.e. if you used connector (A) of the cable (3), the value measured will displayed next to the letter (A) on the screen.

The maximum pressure must be 3 bar (nominal).

On completion of the test, remove all the components of the test instrument, refit the fuel tank outlet pipe (D) securing it with the clamp (E).

In the event of a malfunction of the immobilizer system, it is possible to start the engine using the emergency procedure this procedure, which is described in full in Section P 7, Immobilizer override procedure, requires a secret code which may be entered using the DDS tester.

Remove the seat (Sect. E 3, Removal of the seat).

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (2) to the diagnostics connector (A) on the tester and to the diagnostics socket (B) on the motorcycle.

Enter the general functions menu by pressing the icon “Menu 1” (A).

Press the “Select vehicle” icon and, on the next screen, press the “Select motorcycle” icon; select the motorcycle model and confirm, then select the version and confirm.

Press the icon “Select system” to display a list of the bike’s systems that can be analysed. Select “Engine electronics” and press the “Confirm” icon (B). Next, press the “Self-diagnosis” icon to access the corresponding function.

A screen will appear in which you can enter the 5 digit secret code. Use the red arrows (E) and (F) to enter each digit: after entering each digit, press the “Confirm” icon (B).

If any problems were encountered during the operation, the tester will display the relative error messages: each message must be confirmed by pressing the “Confirm” icon, or rejected by pressing the “Exit” icon (G).

Refit the seat (Sect. E 3, Refitting the seat).

The DDS tester guides the operator step-by-step through the various diagnostic procedures, providing descriptions and documentation for motorcycle components, wiring diagrams for the electronic systems and information on the locations of specific components.

Remove the seat (Sect. E 3, Removal of the seat).

Switch on the DDS tester (1); see paragraph entitled “Tester power supply”.

Connect the power and diagnostics cable (2) to the diagnostics connector (A) on the tester and to the diagnostics socket (B) on the motorcycle.

Enter the general functions menu by pressing the icon “Menu 1” (A).

Press the “Select vehicle” icon and, on the next screen, press the “Select motorcycle” icon; select the motorcycle model and confirm, then select the version and confirm.

To determine whether the system has any internal problems, you can access the “Self-diagnosis” function by pressing the corresponding icon. If any errors are present, the symbol (D) will be displayed. To determine the type of errors present, press the “Errors” icon (E). Once errors have been detected, you can then resolve them through the guided diagnosis procedure; press the “Guided Diagnosis” icon (C).

You can determine the engine rpm required for the alternator to produce sufficient current to charge the battery, power the injection/ignition system and all the electrical equipment on the motorcycle. When applied to a cable, the ammeter clamp (18) detects the magnetic field generated by the current passing through that cable.

Remove the seat (Sect. E 3, Removal of the seat).

Switch on the DDS tester (1); see paragraph entitled “Connection to motorcycle”.

Connect the power and diagnostics cable (Measurement Module) (3) to the measurement module connector (D) on the DDS tester (1).

Apply the ammeter clamp to the battery positive terminal lead with the arrow on the clamp pointing towards the battery positive terminal (+).

On the DDS tester (1), select the “Measurement module” function by pressing the corresponding icon; then press the “Ammeter” icon (F) followed by the “Start” icon.

The socket to which the cable (Measurement Module) (3) is to be connected is indicated on the screen with a capital letter: A, B or C.

If the measured current is a positive quantity, this means that alternator is powering all the electrical loads and charging battery at the same time. If the current has a negative sign, this means that the charging system is not able to power the electrical loads and a significant amount of the current required must be supplied by the battery, which is therefore discharging.

Refit the seat (Sect. E 3, Refitting the seat).

The instrument panel multifunction display features a wrench symbol that signals the need for servicing in accordance with the programmed maintenance routine.

Remove the seat (Sect. E 3, Removal of the seat).

Switch on the DDS tester; see the paragraph “Tester power supply”.

Connect the power and diagnostics cable (2) to the diagnostics connector (A) on the tester and to the diagnostics socket (E) on the motorcycle.

Enter the general functions menu by pressing the icon “Menu 1” (B).

Press the “Select vehicle” icon and, on the next screen, press the “Select motorcycle” icon; select the motorcycle model and confirm, then select the version and confirm by pressing the “Select vehicle system” icon.

Press the “Settings” icon to display the special parameters. Select the option “Service light OFF” and then press the “Apply” icon.

On completion of the operation, the message “Was the operation was completed successfully?” will appear; press “Confirm” (C).

If any problems were encountered during the operation, the tester will display the relative error messages: each message must be confirmed, (by pressing the “Confirm” icon (C)), or rejected (by pressing the “Exit” icon (D)).

Once the “service” indication has been reset with the DDS tester, set the ignition switch to OFF and wait for at least 30 seconds before switching it ON again.

Refit the seat (Sect. E 3, Refitting the seat).