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Electrical function schematic for preheating - PE15.20-P-2051-97DAE

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ENGINE 651 up to 2/28/13 in MODEL 212 (except 212.098/298) 

Code: Designation: Position:
1 Circuit 15, status ON 8E
10 Coolant thermostat heating element, actuation 8D
2 Glow, request 3E
3 Glow plugs, actuation 2H
4 Preglow indicator lamp, actuation 12E
4 Preglow indicator lamp, actuation 15E
5 Circuit 50, status 9E
6 Circuit 61, status 7G
7 Glow output stage, status 5E
8 Circuit 87, status 5D
9 Oil temperature sensor, signal 7D
A1 Instrument cluster 13E
A1e16 Preglow indicator lamp 14D
B1 Oil temperature sensor 6C
CAN E Chassis CAN 10E
G2 Alternator 6J
LIN C1 Drive train LIN 6H
LIN C1 Drive train LIN 4E
N10/1 Front SAM control unit with fuse and relay module 2A
N10/1kN Engine circuit 87 relay 4D
N14/3 Glow output stage 2E
N3/9 CDI control unit 6E
N73 Electronic ignition switch control unit 10G
R39/1 Vent line heater element 8C
R9/1 Cylinder 1 glow plug 2H
R9/2 Cylinder 2 glow plug 2H
R9/3 Cylinder 3 glow plug 2J
R9/4 Cylinder 4 glow plug 2J
Fig 1: Preheating Electrical Function Schematic
G10242561Courtesy of MERCEDES-BENZ USA