Engine Temperature Sensor - VESPA GTV 250 i.e. 2008 Service Station Manual

Injection
1 Water temperature sensor
With the control unit side connector disconnected
and the coolant temperature sensor connector
connected, check the resistance between pins 9
and 26 in relation to the engine temperature.
20° = 2500 ± 100 Ω
80° = 308 ± 6 Ω
With the control unit side connector disconnected
and the coolant temperature connector discon-
nected, check the insulation between the two light
blue-green and grey-green cables
With the control unit side connector disconnected
and coolant temperature sensor connector dis-
connected, check the continuity between pin 9 of
the interface wiring and the light blue-green cable
of the connector, and between pin 26 of the inter-
face wiring and the grey-green cable of the con-
nector.
Specific tooling
020481Y Wiring of the control unit's interface
020331Y Digital multimeter
Zeroing the throttle
Resetting the throttle valve position signal (T.P.S reset)
The MIU control unit is supplied with a throttle valve position sensor that is pre-calibrated.
Pre-calibration entails regulating the minimum opening of the throttle valve to obtain a certain flow of
air under pre-set reference conditions.
Pre-calibration ensures optimal air flow to control idling.
This regulation must not be tampered with in any way whatsoever.
INJEC - 188

ENGINE TEMPERATURE SENSOR

Specification
Vespa GTV 250 i.e.
Desc./Quantity