Gilera Runner Purejet 2007 Workshop Manual page 171

Runner Purejet
11. If different resistive values are detected, re-
place the fuel injector mounting
12. Check the fuel injector winding negative insu-
lation.
1 - any pin of the injector > or = 10 Ohm
NO point 13 YES point 14
13. Replace the air injector mounting
GO TO point 12
14. Connect the specific tool to the ECU. Connect
the fuel injector connector. Check the presence of
voltage to the ECU.
1 - 3 battery voltage (engine off and any posi-
tion of the switch)
NO point 15 YES point 16
15 - Voltage is close to 0V and the injector is open.
Check the control line insulation. Replace the ECU
if necessary
Specific tooling
020481Y Control unit interface wiring
16. The fuel injector control circuit is efficient. While the engine is running, the opening time of the fuel
injector can be displayed through the indication given in the "PARAMETERS" menu of the scooter
diagnostic tester.
T. FUEL INJECTION (mS) =
about 6 mS (start-up at 20°C)
about 1.8 mS (idle at 20° C)
about 1.6 + 1.5 mS (idle at 60° C)
The values are indicative but useful for diagnostics. Command failures or unusual opening times are
always caused by the ECU.
Specific tooling
020460Y Scooter diagnosis and tester
pure jet injection
INJ PJ - 171