Gilera Runner RSTPurejet Service Manual page 154

pure jet injection
COMPONENTS LAYOUT
1 ECU
2 20A fuses
3 Air injector
4 Fuel injector
5 H.V. coil
6 Voltage regulator
7 Battery 12V 9Ah
A+ under panel
B To flywheel magneto
The injection system integrated with the injection is inductive. Ignition is controlled based on two pa-
rameters:
- Ignition advance
- Core dwelling time (DWELL)
The ignition advance curve is optimised according to the engine rpm and load, perceived through the
TPS1 and TPS2 signals. The core dwelling time is optimised according to the power required by the
H.V. coil
Naturally, longer core dwelling times are used during start up phases.
The ECU auto-diagnostic also checks the coil power supply circuit, detecting interruptions or short
circuits. The check is only performed in the presence of rpm - phase signals (engine running). Faults
are indicated to the driver by the injection light lighted steady. In addition, to safeguard the safety of the
vehicle, the injector power supply is interrupted and its functionality is not automatically reset, thereby
avoiding the possibility of use with lost ignitions. To reset operations, switch to «ON» «OFF» «ON».
The fault is registered, with the possibility of switching to «occurred».
INJ PJ - 42
Runner RST Purejet