Malaguti SPIDER MAX GT 500 Manual Diagnóstico página 229

SPIDER MAX 500
18. GAS VALVE POSITION SENSOR (T.P.S. = THROTTLE POSITION SENSOR)
TERMINALS
1 - 22
11 - 22
18.1 Circuit diagram
CENTRAL UNIT
Dashboard
connector
Sch. 11
The gas valve position sensor is assembled inside the throttle body and cannot be removed.
The sensor receives a 5V-supply from the central unit and transfer a gradually increasing voltage to the central unit
according to the opening of the gas valve. The central unit transforms the voltage into the angular inclination of the valve.
The engine rpm and the gas valve position are the two basic signals for the engine operation management.
In case of failure of the circuit, the injection led and the protections turn on. In these conditions, the engine operates,
even if not at its best, safeguarding the integrity of the catalytic converter.
The gas valve position signal is important especially in case of small openings of the valve; these are the conditions in
which the sensor works more often thus requiring frequent checks after covering a remarkable distance.
In order to check the sensor and the circuit, 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.
Select the multimeter menu from the "ERRORS" function.
Check whether the central unit detected any anomaly concerning the gas valve position signal.
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CONDITIONS
Key switch on the "ON" position
Open the gas valve gradually
Central unit ground
103 12/04
STANDARD
5 V
V=gradual increase
Throttle
potentiometer
Parameters Throttle
Immobilizer Pressure
Errors Water temperature
Delete errors Air temperature
Active diagnostics Battery voltage
CO calibration Injector
Main 3/8 Errors
B
Engine
temperature
sensor
Air
temperature
sensor
1/3 AM