Specifications

BROWN PIN 5 and PIN 2 of the sensor should be restored. If the air temperature sensor
error is displayed at the same time, this means that the grey cable common for both sensors
is shorted to positive.
•
If shorted to negative, check sensor correct resistance: if resistance is null, replace the sen-
sor; if resistance is correct, it means that the orange cable has ground connection: restore
the cable harness.
NOTES No error is detected if the sensor does not work correctly or the control unit connector
or sensor terminals are rusty: then check through Navigator if the temperature indicated is the
same as the engine temperature. Check also that the sensor electrical characteristics are ob-
served: replace the sensor if not OK; if it is OK, check the sensor connector and the Marelli
control unit connector
Air temperature sensor
Function
It tells the control unit the intake air temperature in
order to calculate oxygen presence so as to opti-
mise the petrol quantity necessary for correct com-
bustion.
Operation / Operating principle
NTC type sensor (resistance sensor, inversely
variable with temperature).
Level in electrical circuit diagram:Temperature
sensors
Location:
•
sensor: on filter casing
•
connector: on the sensor
Electrical characteristics:
AIR TEMPERATURE SENSOR RESISTANCE
Specification
Desc./Quantity
1 Resistance at -40 °C (-40 °F) 100.950 kOhm
2 Resistance at 0 °C (32 °F) 9.750 kOhm
3 Resistance at 10 °C (50 °F) 5.970 kOhm
4 Resistance at 20 °C (68 °F) 3.750 kOhm
5 Resistance at 30 °C (86 °F) 2.420 kOhm
6 Resistance at 40 °C (104 °F) 1.600 kOhm
7 Resistance at 90 °C (194 °F) 0.280 kOhm
Pin-out:
•
PIN 1: Ground connection
•
PIN 2: 0-5 V signal
NAVIGATOR: PARAMETERS
Norge GT 8v Electrical system
ELE SYS - 111
Revente Interdite - Revendita Vietata - Resaling Forbiden - Wiederverkauf Verboten