Fuel Tank Pressure Sensor: Description and Operation

GF47.30-P-2100VU Component Description For The [1][2]Fuel Tank Pressure Sensor
- with CODE (494) USA version







Location
- Model 203, 209, 211, 219: in the closing plate of the left fuel tank chamber
- Model 171: in the closing plate of the fuel filter
- Model 164: at the top of the filler neck (Version 1 for standard series) or at the top in the fuel tank
- Model 221: above on the filler neck
- Model 251: at the top in the fuel tank
- Model 230: at the top in the fuel tank at the fuel level sensor.

Task
Detects the in-tank pressure for leakage testing of the purge system.

Function
The voltage supply of 5 V is performed by the ME control unit. The measuring range extends from approx. -50 mbar up to approx. +30 mbar.

The output signal is dependent on the in-tank pressure: -50 mbar approx. 0.5 V, 0 mbar approx. 3 V and +30 mbar approx. 4.5 V.