8-VALVE 1.4
ENGINE
FIAT PUNTO TRAINING OUTLINE
Fiat Auto S.p.A.
After Sales Training
Operation
0 5975
309
The reference voltage for the injection system NTC element is 5 V. Since the input circuit in
the control unit has been designed as a voltage divider, such voltage is distributed between a
resistor available in the control unit and the sensor’s NTC resistor.
It follows that the control unit is capable of evaluating the sensor resistance variations through
the voltage variations, and thus obtaining the temperature piece of information.
°C
Ω
-20 15971
-10 9620
10 3816
20 2502
25 2044
30 1679
40 1152
50 807
60 576
70 418
80
90 231
100 176
gb Fiat Grande Punto OK
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