Gilera Nexus 500 Workshop Manual page 283

Nexus 500
12 - Connect the throttle valve position sensor connector.
Repeat the voltage measurement between terminals 1 and 22 of the special tool.
Electric characteristic
1-22 =
5±0.2 V
YES go to 13 NO go to 14
13 - Measure voltage between terminals 11 and 22. Gradually open the throttle valve and check that
the voltage value increases progressively.
N.B.
BY WAY OF AN INDICATION, VOLTAGE MAY VARY FROM APPROX. 700MV AT MINIMUM, AND
ABOVE 4V AT MAXIMUM.
Electric characteristic
11-22 =
V (progressive variation)
The possible variations of the limit values are
caused by the sensor installation tolerances.
YES go to 15 NO go to 14
14 - Replace the throttle body along with sensors
and stepper.
YES point 12
15 - Check that the voltage measured at pins 11
and 22 matches that indicated by the diagnostic
tester set to "PARAMETERS".
YES go to 16 NO go to 17
16 - The throttle valve position sensor and relevant circuit are conforming.
17 - Replace the control unit.
Zeroing the throttle
Resetting the throttle valve position signal (T.P.S. reset)
The throttle body is supplied with throttle valve position sensor and is pre-calibrated.
Injection
INJEC - 91