PIAGGIO 2005 XEVO 400ie, Workshop Manual

Page: 251 / 376

The throttle body after the pre-calibration has an opened valve with an angle that can vary depending
on the tolerances of the machining of the pipe and the valve itself.
The valve position sensor can also assume various fitting positions. For these reasons the mV of the
sensor with the valve at idle can vary from one throttle body to another.
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. The control unit will recognise such value as angle 5.24°.
To reset, proceed as follows:
Connect the diagnostic tester.
Set the switch to " ON " with switch in " RUN " and
side stand raised.
Select the functions of the diagnostic tester on
« TPS RESET ».
Specific tooling
020680Y 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.
XEVO 400ie
Injection
INJEC - 251