Gilera Nexus 500, Workshop Manual, Page: 244 / 406

NO go to 20
20 - Repair or replace the cable harness.
21 - Check the continuity between the injector power supply connector (red - yellow) and pin 13. Restore
the continuity, if required, or replace the wiring
22 - Replace the injector.
Inspecting the injector hydraulics
To check the injector it is advisable to remove the
intake manifold along with throttle body and injec-
tor.
The injector should be removed from the manifold
only if necessary.
For these operations, see the "thermal unit and
timing system" chapter
1 - Connect the diagnostic tester. Use the socket
in the under-saddle compartment.
Install the fuel pressure check kit special tool.
In this case, the injector can be connected directly
to the tool quick couplings.
AHEAD go to 2
Specific tooling
020460Y Scooter diagnosis and tester
020480Y Petrol pressure check set
2 - Prepare a graduated container with minimum
capacity of 100 cm3 and a resolution of 10-20 cm3
Connect the injector to the wire supplied with the
injection tester. The wire is provided with alligator
clips for direct connection to the battery.
Prepare an auxiliary battery.
Set the switch to " ON " with switch to " RUN " and
stand raised.
Select the "active diagnosis" function.
Start the pump diagnosis.
During the first 30 seconds of pump diagnosis,
power the injector by the wire and the auxiliary
battery for 15 seconds.
Injection
Nexus 500
INJEC - 52