Fuel Tank Pressure Sensor: Description and Operation

GF47.30-P-2100BK Component Description For The Tank Pressure Sensor
- with CODE (494) USA version







Location
- Model 219: in the closing plate of the left fuel tank chamber
- Model 164.1: above on the filler neck (1st version for production start-up) or above on the fuel tank
- Model 251: above on the fuel tank.

Task
To detect 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.