Gilera Runner Purejet 2007, Workshop Manual, Page: 146 / 257

• Fuel injector
• Air injector
• H.V. coil
Every actuator is controlled with a specific timing. Control is made possible by the phase - rpm signal,
coming from a phonic wheel obtained on the outer diameter of the flywheel magneto rotor. The flywheel
is divided into 24 sectors and is provided with 23 teeth controlling the gap variations to the pick - up
core. The latter is of the reluctance variation type, and is supplied with its own magnetism and produces
alternating voltage. During the flywheel rotation, each tooth changes the core magnetic activity and
generates a complete alternance, in a sequence of every 15°, thereby allowing precise measurement
of the rotation speed also at a periodical level. The angular position is perceived by the alternance
separated by the 30° of rotation due to the missing tooth. The electrical lines connecting to the ECU
are polarised to control correct timing. The positive peak of the signal is separate from the negative by
about 2° of rotation.
The ECU self-diagnostic checks the phase - rpm signal even though the activity is limited to the rec-
ognition of any signal irregularities in an engine cycle. In these cases, ignition losses may occur and be
signalled to the driver by a steady light. A sharp interruption of the signal causes the engine to shut
down and the fault is not perceived by the self-diagnostic system. When the phase - rpm signal is
missing, the following actuators are not controlled:
• Fuel injector
• Air injector
• H.V. coil
• Fuel pump
1- Connect the scooter diagnostic tester. Select the «errors» function on the menu. Check the presence
of the error:
P0335 PICK UP RPM
YES point 2
GO TO point 3
Specific tooling
020460Y Scooter diagnosis and tester
2. The ECU has detected instability of the phase rpm signal. Proceed as follows, regardless of the
storage status (current - occurred - stored).
GO TO point 4
3. The ECU has detected no fault relating to the phase - rpm signal. The signal may be totally missing.
To check, proceed as follows.
GO TO point 4
4. Connect the interface wiring. Omit the connection to the ECU. Disconnect the connector from the
flywheel magneto.
GO TO point 5
pure jet injection
Runner Purejet
INJ PJ - 146