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Home >> Mercedes Benz >> 2018 >> S450 Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System - 222 Chassis (3 Of 4) >> Wiring Diagrams >> Electrical Function Schematic For Climate Control Input Signals >> Electrical Function Schematic For Climate Control Input Signals - PE83.40-P-2056-97SEB
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Electrical Function Schematic For Climate Control Input Signals - PE83.40-P-2056-97SEB

Model 217, 222 up to model year 2018 with code 1U6 (R744 refrigerant) 

Code: Designation: Position:
1 Circuit 15, status 26E
10 Heat exchanger temperature sensor, signal 23C
11 Refrigerant pressure, signal 23E
12 Refrigerant temperature, signal 23E
12 Refrigerant temperature, signal 323E
13 Sun sensor, signal 31B
13 Sun sensor, signal 42H
13 Sun sensor, signal 28E
14 CO2 sensor, signal 31B
15 Air quality sensor, signal 23A
16 Vehicle speed, signal 26G
16 Vehicle speed, signal 15L
17 Engine speed, signal 25E
17 Engine speed, signal 12L
17 Engine speed, signal 6L
18 Door rotary tumbler switch, status 27E
19 Side window position, signal 27F
19 Side window position, signal 28E
2 Engine running, signal 13L
2 Engine running, signal 26F
2 Engine running, signal 7L
20 Sliding roof position, signal 29E
21 Potentiometer, signal 23D
22 Operation, signal 31C
22 Operation, signal 23B
22 Operation, signal 15J
22 Operation, signal 25F
22 Operation, signal 13H
22 Operation, signal 20J
23 Audio/COMAND display, actuation 28J
24 Low voltage differential signal video signal data transfer, signal 28H
25 Voice input, status 16J
25 Voice input, status 25F
26 Evaporator drying, request 15L
26 Evaporator drying, request 25G
27 Crash, signal 13J
27 Crash, signal 25E
3 Outside temperature sensor, signal 11B
4 Outside temperature, signal 24E
5 Interior temperature, signal 11D
5 Interior temperature, signal 24F
6 Air outlet temperature sensor, signal 31D
7 Humidity and temperature sensor, signal 11C
7 Humidity and temperature sensor, signal 24F
8 Coolant temperature, signal 13L
8 Coolant temperature, signal 7L
8 Coolant temperature, signal 26F
9 Evaporator temperature sensor, signal 31A
9 Evaporator temperature sensor, signal 23B
A1 Instrument cluster 18K
A40/3 COMAND control unit 24H
A40/8 Audio/COMAND display 29H
A98n1 Panoramic sliding roof control unit 45H
B10/10 Right rear air conditioning heat exchanger temperature sensor 21D
B10/11 Rear air conditioning evaporator temperature sensor 15C
B10/31 Left side air outlet temperature sensor 35D
B10/32 Right side air outlet temperature sensor 35D
B10/35 Left footwell air outlet temperature sensor 35E
B10/36 Right footwell air outlet temperature sensor 35E
B10/6 Evaporator temperature sensor 34A
B10/9 Left rear air conditioning heat exchanger temperature sensor 21C
B12/4 CO2 pressure/temperature sensor downstream of gas cooler 19E
B12/5 CO2 pressure/temperature sensor upstream of gas cooler 21E
B14 Outside temperature sensor 9B
B31/1 Multifunction sensor 16A
B32/3 Sun sensor 37B
B32/4 Rear sun sensor 40G
B38/2 Rain/light sensor with additional functions 7B
B38/2b3 Humidity/temperature sensor 7C
B98 CO2 sensor 39B
B98/1 Rear passenger compartment CO2 sensor 39D
CAN A Telematics CAN 26J
CAN B Interior CAN 16G
CAN B Interior CAN 30G
CAN B Interior CAN 20G
CAN B Interior CAN 31F
CAN B Interior CAN 32F
CAN B Interior CAN 30G
CAN B Interior CAN 42F
CAN B Interior CAN 37F
CAN B Interior CAN 14G
CAN B Interior CAN 22G
CAN B Interior CAN 35G
CAN C1 Drive train CAN 5L
CAN HMI User interface CAN 16L
CAN HMI User interface CAN 11J
CAN HMI User interface CAN 18J
Code 413 Panoramic sliding sunroof 44H
Code 582 Air conditioning in rear 15B
Code 582 Air conditioning in rear 34C
Code 582 Air conditioning in rear 16E
Code 582 Air conditioning in rear 20C
Code 582 Air conditioning in rear 39C
Flex E Chassis FlexRay 12L
LIN B13 Roof LIN 9D
LIN B16 Rain and light sensor LIN 9C
LIN B8-2 Climate control LIN 2 20A
LIN B8-3 AC operation LIN 32C
LIN B8-3 AC operation LIN 21B
LIN B8-4 Climate control LIN 3 33C
LVDS Low voltage differential signal 26H
N10/6 Front SAM control unit 12B
N10/8 Rear SAM control unit 43H
N127 Drivetrain control unit 9K
N2/10 Supplemental restraint system control unit 10F
N22/1 Climate control, control unit 26B
N22/4 Rear air conditioning operating unit 34D
N22/6 Rear control unit 39H
N3/10 ME-SFI [ME] control unit 5G
N3/9 CDI control unit 2G
N58/1 Climate control operating unit 18B
N69/1 Left front door control unit 33H
N69/2 Right front door control unit 33H
N69/3 Left rear door control unit 36H
N69/4 Right rear door control unit 36H
N70 Overhead control panel control unit 4B
N70b1 Interior temperature sensor with integrated fan 5B
N73 Electronic ignition switch control unit 14H
R41/10 Right rear center air vent potentiometer 15E
R41/5 Left side air vent potentiometer 15D
R41/6 Right side air vent potentiometer 15E
R41/7 Left center air vent potentiometer 15E
R41/8 Right center air vent potentiometer 16E
R41/9 Left rear center air vent potentiometer 16E
U1032 Valid for engine 278 and 157 5H
U1035 Valid for gasoline engine 279 5J
U1073 Valid for gasoline engine 276.9 5H
U1217 Valid for model series 217 38H
U1217 Valid for model series 217 21H
U1222 Valid for model series 222 35H
U1222 Valid for model series 222 21H
U391 Valid for gasoline engine 276.8 5J
U397 Valid for gasoline engine 277 4J
U74 Valid for diesel engines 1G
U75 Valid for gasoline engines 4G
U880 Valid for diesel engine 642 1J
U948 Valid for diesel engine 651 1J
G15302603Courtesy of MERCEDES-BENZ USA
G15302604Courtesy of MERCEDES-BENZ USA
G15302605Courtesy of MERCEDES-BENZ USA