ML 63 AMG (164.177) V8-6.3L (156.980) (2007)
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Fuel Pressure Sensor/Switch: Description and Operation
GF07.61-P-6022AMG Component Description For The Fuel Pressure Sensor
The fuel pressure sensor is located at the front on the left side of the fuel manifold.
Task
The fuel pressure sensor detects the fuel pressure in the fuel manifold.
The fuel pressure is evaluated by the ME-SFI [ME] control unit (N3/10) for actuation of the left and right fuel pump control units (N118/3 and N118/4)
(except model 216, 221) according to requirements or the left fuel pump control unit (N118/3) (for model 216, 221).
Function
The fuel pressure deforms a membrane, which affects a potentiometer. This alters the resistance value of the potentiometer and influences the signal
voltage (about 0.3 to 4.8 V) in such a way that it serves the ME-SFI [ME] control unit as information about the fuel pressure.
The pressure sensor measuring range lies between 0.5 and 10 bar.
The fuel temperature is also detected by the fuel pressure sensor but not evaluated by the ME-SFI [ME] control unit.
