PIAGGIO NRG POWER PUREJET, Руководство по ремонту, Страница: 159 / 248

The ECU autodiagnosis also checks the coil power circuit and detects interruptions and shorts. Check-
ing is normally only done in the presence of the rpm - timing signal (engine running). Any faults are
signalled to the driver via the injection lamp. In addition to protect the vehicle, the injector power is
interrupted, its operation is not automatically reset, thus preventing use with backfiring. To reset oper-
ation, it is necessary to switch «ON» to «OFF» and then «ON». The fault is recorded without the
possibility of moving to «PAST EVENTS».
CIRCUIT DIAGNOSIS
1- Connect the scooter diagnostic tester. Select the active diagnostic function.
GO TO point 2
Specific tooling
020460Y Scooter diagnosis and tester
2. Start the diagnostic of H.V. coil. Check if 5 ignitions are controlled. These can be detected by the
noise produced by the magnetic activity and from the spark on the plug. If this check is not possible,
use an external spark plug and check the 5 sparks directly.
YES point 3 NO point 4 NO point 5
3. There are 5 sparks. The ignition system is working. For greater certainty, continue with the auto-
diagnostic check in order to highlight stored errors.
4. No sparks present, even if the result is: "test successful". Continue with circuit checks. If there are
no faults, replace the ECU
GO TO point 2
5. No sparks present. The result is: «test failed» Repeat the diagnostic and, if necessary, replace the
ECU.
GO TO point 2
CHECKING THE auto-diagnostic MESSAGE
1- Connect the scooter diagnostic tester. Select the «errors» function on the menu. Check if there are
any errors on the H.V. coil.
P0350 H.V. COIL
YES point 3 YES point 4 NO point 2
Specific tooling
020460Y Scooter diagnosis and tester
2. No errors. To be more sure, check:
- Spark plug
· H.V. coil secondary
- Shielded cap
- Ignition timing
3. Error on the H.V. coil in current status. Continue with circuit checks.
4. Error on the H. V. coil in «occurred» or stored status. Continue with circuit checks. Possible problems:
NRG Power Purejet
pure jet injection
INJ PJ - 43