LR3/Disco 3
The film resistors are arranged in a linear arc with resistance ranging from 51.2 to 992.11 Ohms. The electrical output
signal is output proportional to the amount of fuel in the tank and the position of the float arm. The measured resistance is
processed by the instrument pack to implement an anti-slosh function. This monitors the signal and updates the fuel
gauge pointer position at regular intervals, preventing constant pointer movement caused by fuel movement in the tank
due to cornering or braking.
A warning lamp is incorporated in the instrument cluster and illuminates when the fuel level is at or below 10 litres (2.64
US gallons).
The fuel level sender signal is converted into a CAN message by the instrument pack as a direct interpretation of the fuel
tank contents in litres. The ECM uses the CAN message to store additional OBD P Codes for misfire detection when the
fuel level is below a predetermined capacity.
Front Fuel Level Sensor Resistance/Fuel Gauge Read out Table
NOTE :
Rear Fuel Level Sensor Resistance/Fuel Gauge Read out Table
NOTE :
Item Part Number
Description
1
-
Magnetic foil
2
-
Spacer
3
-
Ceramic surface
4
-
Magnet
5
-
Resistance film
These figures are with the vehicle on level ground. Sensor readings will differ with varying vehicle inclinations.
Sender Unit Resistance, Ohms Nominal Gauge Reading
51
Empty
51
Low fuel level illumination
294
Half full
798
Full
These figures are with the vehicle on level ground. Sensor readings will differ with varying vehicle inclinations.
Sender Unit Resistance, Ohms Nominal Gauge Reading
75.5
Empty
120
Low fuel level illumination
280
Half full
675
Full