Gas Valve Position Signal Reset (T.P.S. Reset) - Malaguti SPIDER MAX GT 500 Manual Diagnóstico

SPIDER MAX 500
Check that the voltage measured across PIN 11 and PIN 22 matches the voltage indicated by the
diagnostic multimeter set on "PARAMETERS".
The gas valve position sensor and circuit are normal.
NOTE - The gas valve position sensor check has been configured with voltaic testing as the resistive checks do not give
reliable results.
In order to check the throttle body potentiometer we suggest to connect it to a motorcycle, even if only electrically.

19. GAS VALVE POSITION SIGNAL RESET (T.P.S. RESET)

The throttle body is supplied along with a calibrated gas valve position sensor.
The calibration is performed by adjusting the gas valve to a minimum opening aimed at allowing a determined air flow at
pre-defined conditions.
The calibration allows having an optimised air flow for the management of the engine idling speed.
Never attempt to change this calibration.
The injection system controls the idling speed by means of the stepper motor and the spark advance change.
After the calibration the throttle body valve opens at an angle that varies according to the work tolerance of the duct and
the valve itself.
Also the valve position sensor may have different assembling positions. For these reasons, the sensor mV value with
the valve minimum opening, may vary depending on the throttle body type.
In order to get the best carburetion, especially with the smallest gas valve openings, it is necessary to combine the
throttle body and the central unit, by means of the so.-called "TPS reset" procedure.
This procedure allows indicating to the central unit the starting point, the value expressed in mV corresponding to the
calibration position. The central unit will recognise this position as a 5,24° angle.
In order to reset the value, proceed as follows:
- Connect the diagnostic multimeter.
- Move the key switch to the "ON" position, the emergency switch to "RUN" and lift the side stand.
F. 88
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107 12/04
Throttle value mV.
Battery voltage V
Stepper motor steps
Engine running
Syncr. panel
Min. or max. throttle
Parameters
Replace the central unit.
B
817
11.7
96
NO
NO
NO
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