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Home >> Mercedes Benz >> 2012 >> S550 Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbo Charging - 221 Chassis >> Wiring Diagrams >> Electrical function schematic for charging >> Electrical function schematic for charging - PE09.00-P-2050-97SAH

Electrical function schematic for charging - PE09.00-P-2050-97SAH

ENGINES 157, 278 in MODEL 221 

Code: Designation: Position:
1 Pressure sensor downstream of air filter, signal 7F
2 Boost pressure, signal 8G
3 Intake manifold air pressure, signal 4G
4 Circulation pump relay, actuation 6H
5 Charge air cooler circulation pump, actuation 7H
6 Accelerator pedal sensor, signal 4E
7 Engine speed, signal 4D
8 Boost pressure positioner, actuation 6C
9 Intake air temperature sensor, signal 7D
B17 Intake air temperature sensor 8D
B28/4 Pressure sensor downstream of air filter, left cylinder bank 9F
B28/5 Pressure sensor downstream of air filter, right cylinder bank 9F
B28/6 Pressure sensor upstream of throttle valve actuator 8G
B28/7 Pressure sensor downstream of throttle valve actuator 3H
B37 Accelerator pedal sensor 2F
B70 Crankshaft Hall sensor 3D
M44 Charge air cooler circulation pump 8H
N10/2kQ Circulation pump relay 5H
N3/10 ME-SFI [ME] control unit 5E
Y77/1 Boost pressure positioner 5C
Fig 1: Charging Electrical Function Schematic
G10126566Courtesy of MERCEDES-BENZ USA