VESPA GTS Super 300 ie 2008 Service Station Manual page 211

Vespa GTS Super 300 ie (2008)
To obtain the optimum fuel mixture, especially at small openings of the throttle valve, it is essential to
match the throttle body with the control unit following the procedure known as TPS resetting.
With this operation we inform the control unit, as the starting point, of the mV value corresponding to
the pre-calibrated position.
To reset, proceed as follows.
Connect the diagnostic tester.
Switch to «ON».
Select the functions of the diagnostic tester on «TPS RESET».
Specific tooling
020922Y Diagnosis Tool
Make sure that the throttle valve with the control is
supporting the stop screw.
Guaranteeing that this position will be kept, send a confirmation for the TPS reset procedure.
Reset should be performed in the following cases:
- on first fitting.
- if the injection control unit is replaced.
N.B.
THE TPS RESET PROCEDURE MUST NOT BE CARRIED OUT WITH A USED THROTTLE BODY
BECAUSE POSSIBLE VALVE WEAR AND STOP WEAR FOR THE MINIMUM OPENING MAKE THE
AIR FLOW DIFFERENTLY FROM THAT OF PRE-CALIBRATION.
Given that the TPS resetting is also done when the
control unit is replaced, place the control unit - filter
box bellows at 45° during the refitting operation as
shown in the picture.
Injection
INJEC - 211