Gilera Nexus 500 Workshop Manual page 281

Nexus 500
2 - Select the diagnostic tester menu on the "PA-
RAMETERS" function.
Check whether the control unit recognises the ex-
treme positions:
Throttle valve to minimum
Throttle valve to maximum
YES go to 4 NO go to 3
3 - Check the adjustment of the throttle valve control flexible transmissions. Fix or replace, if required.
YES go to 2
4 - Gradually open the throttle valve, check that the mV value increases progressively and proportionally
with the opening variation.
YES go to 5 NO go to 6
5 - The throttle valve position signal is conforming.
6 - Connect the special tool to the injection system.
Do not connect the tool to the control unit.
Disconnect the throttle valve position sensor connector.
Check the continuity between the connector's terminals and the relevant pins on the control unit.
Specific tooling
020481Y Control unit interface wiring
Electric characteristic
Light blue/green-22 =
0 Ω (continuity)
Brown-yellow-1 =
0 Ω (continuity)
Orange-light blue-11 =
0 Ω (continuity)
YES go to 8 NO go to 7
7 - Repair or replace the injection wiring.
YES go to 6
Injection
INJEC - 89