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Electrical function diagram for purging function - PE47.30-P-2052-97NAF

Code: Designation: Position:
1 Oxygen sensor, signal 6D
2 Engine load, signal 5F
3 Coolant temperature sensor, signal 4F
4 Charge air temperature sensor, signal 3D
5 Purging switchover valve, actuation 3B
6 Engine speed, signal 5C
7 Circuit 87, status 3F
8 Purging pressure sensor, signal  
B11/4 Coolant temperature sensor 4G
B17/8 Charge air temperature sensor 1D
B28/7 Pressure sensor downstream of throttle valve 6G
B4/4 Purging pressure sensor 2B
B70 Crankshaft Hall sensor 5B
F58 Engine compartment fuse and relay module 2J
F58kN Circuit 87M relay 2G
G3/3 Left oxygen sensor upstream of catalytic converter 7D
G3/4 Right oxygen sensor upstream of catalytic converter 7E
N3/10 ME-SFI [ME] control unit 4D
U1032 Valid for engine 278 and 157 3D
U391 Valid for gasoline engine 276.8 3D
Y58/1 Purge control valve 3B
Fig 1: Purging Function Electrical Function Diagram
G10077817Courtesy of MERCEDES-BENZ USA