Circuit Diagram - Malaguti SPIDER MAX GT 500 Manual Diagnóstico

SPIDER MAX 500
15. COOLANT TEMPERATURE SENSOR
TERMINALS
4-22

15.1 Circuit diagram

Dashboard
connector
Sch. 9
The coolant temperature sensor assembled on the engine head provides all the indications for the digital instrument and
injection.
It is made of two electrically separated sections.
The injection section is made by means of a NTC sensor connected to a 5V-supplied circuit. The resistance change
cause a change in the circuit voltage, that can be combined to a temperature value.
The central unit uses this information to control the engine operation, optimising all the temperature values.
In case of failure of the circuit, the injection led and the protections turn on (continuous fan operation included). In these
conditions, the engine operates, even if not at its best, safeguarding the integrity of the catalytic converter.
The most difficult anomaly to correct is a wrong temperature reading included within the possible temperature value
range that may lead to a failure of the protection operation and/or a bad carburetion. The described anomaly is more
likely to occur during the engine start-up.
All manuals and user guides at all-guides.com
CONDITIONS
coolant temperature
CENTRAL UNIT
94
A sensor connected:
20° = 2500 ± 100 Ω
80° = 308 ± 6 Ω
Central unit ground
12/04
STANDARD
Throttle
potentiometer
Air temperature
B
Engine
temperature
sensor
sensor