Fuel Tank Pressure Sensor: Description and Operation

GF47.30-P-2100MIK Component Description For The Fuel Tank Pressure Sensor
- MODEL 171.454 with ENGINE 272.942 as of Model Year 09 /AEJ 08 model refinement package
- with CODE (494) USA version
- MODEL 171.458 with ENGINE 272.969 as of Model Year 09 /AEJ 08 model refinement package
- with CODE (494) USA version





Sectional view of fuel tank
55/2 Fuel filter with fuel pressure regulator
75 Fuel tank
B4/3 Fuel tank pressure sensor

Location
The tank pressure sensor is integrated in the top of the fuel filter housing.

Task
The fuel tank pressure sensor detects the pressure inside the fuel tank for testing for leaks in the purge system (leak test).

Function
The fuel tank pressure sensor detects the internal pressure of the fuel tank and issues a corresponding voltage signal to the ME-SFI [ME] control unit (N3/10).
The voltage supply of 5 V is performed by the ME-SFI [ME] control unit.