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Electrical function schematic for lambda control - PE07.10-P-2710-97DAI

ENGINE 276.9 in MODEL 212 up to model year 2014 

Code: Designation: Position:
1 Engine diagnosis indicator lamp, actuation 4H
2 Coolant temperature sensor, signal 2E
3 Fuel injectors, actuation 2D
4 Engine load, signal 4D
4 Engine load, signal 5D
5 Oxygen sensor element, signal 5E
6 Oxygen sensor heater, actuation 6F
7 Circuit 87, status 2F
A1 Instrument cluster 4H
A1e58 Engine diagnosis indicator lamp 3G
B11/4 Coolant temperature sensor 1F
B2/5 Hot film mass air flow sensor 4C
B28/7 Pressure sensor downstream of throttle valve 6B
CAN E Chassis CAN 4G
G3/3b1 Left oxygen sensor element upstream of catalytic converter 6E
G3/3r1 Left oxygen sensor heater upstream of catalytic converter 6F
G3/4b1 Right oxygen sensor element upstream of catalytic converter 6E
G3/4r1 Right oxygen sensor heater upstream of catalytic converter 6F
G3/5b1 Left oxygen sensor element downstream of catalytic converter 6E
G3/5r1 Left oxygen sensor heater downstream of catalytic converter 6F
G3/6b1 Right oxygen sensor element downstream of catalytic converter 6F
G3/6r1 Right oxygen sensor heater downstream of catalytic converter 6G
N10/1 Front SAM control unit with fuse and relay module 2J
N10/1kN Engine circuit 87 relay 2G
N3/10 ME-SFI [ME] control unit 4E
U1020 Valid for gasoline engine with stratified operation 3A
Y76/1 Cylinder 1 fuel injector 2B
Y76/2 Cylinder 2 fuel injector 2B
Y76/3 Cylinder 3 fuel injector 2C
Y76/4 Cylinder 4 fuel injector 2C
Y76/5 Cylinder 5 fuel injector 2C
Y76/6 Cylinder 6 fuel injector 2C
Fig 1: Lambda Control Electrical Function Diagram
G10054277Courtesy of MERCEDES-BENZ USA