Component description for the fuel tank pressure sensor - GF47.30-P-2100AMG

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MODEL 164, 251 with ENGINE 156.980 with CODE (494) USA version

MODEL 209 with ENGINE 156.982 with CODE (494) USA version

MODEL 211, 219 with ENGINE 156.983 with CODE (494) USA version

MODEL 216, 221 with ENGINE 156.984 with CODE (494) USA version

Location on model 164, 251 (shown on fuel tank model 164)

The fuel tank pressure sensor is located above in the rear part of the fuel tank.

Fig 1: Identifying Fuel Tank Pressure Sensor Location On Model 164, 251 - (Shown On Fuel Tank Model 164)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location on model 209, 211, 219 (shown on fuel tank model 209)

The fuel tank pressure sensor is located in closing plate of left fuel tank chamber.

Fig 2: Identifying Fuel Tank Pressure Sensor Location On Model 209, 211, 219 - (Shown On Fuel Tank Model 209)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location for model 216, 221

The fuel tank pressure sensor is located above in the aeration and venting line of the fuel tank.

Fig 3: Identifying Fuel Tank Pressure Sensor Location For Model 216, 221

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

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

Function

The measuring range of the fuel tank pressure sensor extends from approx. -50 mbar to approx. +30 mbar.

The fuel tank pressure sensor detects the internal pressure of the fuel tank and sends an appropriate voltage signal (for -50 mbar about 0.5 V; for 0 mbar about 3 V; for +30 mbar about 4.5 V) to the ME-SFI [ME] control unit (N3/10).

The voltage supply of 5 V is performed by the ME-SFI [ME] control unit.