Component description of fuel level sensor - GF47.10-P-2010SM

MODEL 171 with ENGINE 113.989

MODEL 203 with ENGINE 113.988

MODEL 209 with ENGINE 113.987

MODEL 215 with ENGINE 113.986

MODEL 220 with ENGINE 113.986

Fig 1: Identifying Fuel Level Sensor - Model 203 With Engine 113.988

The fuel level sensor(s) is located in the fuel tank.

Design

The fuel level sensor consists of:

Lever
Float
2 potentiometers (sliding contacts)

Function

Via the float, the position of the lever (with the sliding contacts) is modified according to the fuel level. Thus the resistance of the potentiometers changes and thereby influences the output voltage, which is a measurement for the fuel level.

The fuel tank is "full" at a resistance value of about 0 Ω and "empty" at about 100 Ω.

Model 171

The fuel tank is equipped with a fuel level sensor (B4). The voltage signal is transmitted to the rear SAM control module with fuse and relay module (N10/2), which correspondingly processes the signal and transmits it via the CAN data bus to the instrument cluster (A1).

Model 203, 209

Each fuel tank chamber is equipped with a fuel level sensor. Both the voltage signals N10/2 are transmitted separately to the rear SAM control unit with fuse and relay module, which processes the signals accordingly and transmits them to the instrument cluster over the CAN databus.

Model 215, 220

The fuel tank is equipped with a fuel level sensor (B4). The voltage signal is transmitted to the rear fuse and relay module (K40/5), which forwards the voltage signal on to the instrument cluster.