Mercedes C-Class

W203 since 2000 of release

Repair and car operation



Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   Specifications
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Check of the electric motor of a screen wiper
   Check of warmed back glass
   Relay and safety locks
   Replacement of filament lamps of devices of external lighting
   Replacement of filament lamps of devices of internal lighting
   Removal and installation of the sensor of a daylight
   Removal and headlight installation
   Removal and installation of a fog light
   Removal and installation of a rasseivatel of a fog light
   Removal and installation of a back lamp
   Replacement of the battery of a key of an ignition/remote control
   Removal and installation of the electric motor of a cleaner of a windscreen
   Removal and installation of the electric motor of a cleaner of back glass
   Removal and installation of the tank of water and pump electric motor
   Removal and installation of the sensor of a rain
   Removal and installation of a sound signal
   Removal and installation of sensors of a parking
   Removal and installation of the sensor of temperature of external air
   Removal and installation of a control panel
   Removal and installation of the podrulevy switch
   Removal and installation of the switch of a forward plafond on a ceiling
   Removal and installation of group of switches to the left of a control panel
   Removal and installation of the switch of the central console
   Removal and installation of switches in the doorway
   Removal and installation of door switches of internal lighting
   Removal and installation of precautionary indexes of the assistant to a parking
   Removal and lighter installation
   Removal and radio receiver installation
   Removal and loudspeaker installation
   Digital tire of data of CAN
   The uniform lock - general information
   Installation of additional electric and electronic devices
   Appointment and arrangement of electric sockets
   + electric equipment Schemes







Specifications

 Separate characteristics are provided also in the text of Head and in case of obligation of their performance are allocated with a bold print.


General parameters

Filament lamps

12 In

Appointment

Socle, Type Capacity, W

Driving beam

H7/D2R 55/35

Passing beam

H7/D2R 55/35

Fog lights

НВ4 55

Forward indexes of turns

PY 21

Parking light

W 5

Lateral repeaters of indexes of turns

WY 5

Back indexes of turns

PY 21

Stoplights

R 21

Foggy lamps

R 21

Backing lamps

R 21

Lamps of illumination of registration plate

With 5

Marker lights

R 4

Plafonds internal lighting / illumination of a luggage carrier

With 10

Н7НВ4

Halogen lamp (fastening by a clip)

D2R

Xenon lamp of a high voltage

R

Bayonetny socle

PY

Bayonetny socle, orange

W

Glass socle

WY

Glass socle, orange

With

Spotlights

R

Bayonetny socle

Box of safety locks in a luggage compartment of the car


Predokhr.

Plug

Socket

Color and section of a wire, mm2

Appointment

Current (And)

1

15R

Adjustment of the left seat:

30

1, conclusion 5

Black and yellow 2.5

Control unit of adjustment/memory of provision of a driver's seat (N32/1)

2

15R

Adjustment of the right seat:

30

1, conclusion 6

Black-pink 2.5

Control unit of adjustment/memory of provision of a forward passenger seat (N32/2)

Semi-electronic adjustment of forward seats:

1 conclusion 6

Black and yellow 2.5

Relay of adjustment driver's (K5/1) / passenger (K5/2) seats

3

30

Management of pressure of a rating of tires (TRS):

07.май

7, conclusion 1

Red and yellow 0.5

TRS control unit (N88)

TV ECE and USA:

9, conclusion 1

Red and yellow 0.75

TV tuner (Europe, USA, Japan) (A2/42)

TV Japan:

9, conclusion 1

Red and yellow 0.75

TV tuner (A2/10)

Models 203.7:

16, conclusion 1

Red and green 0.5

Radio remote control receiver stationary heater (STH) (A6/1)

17, conclusion 1

Red and green 0.75

Back salonny lamp (E15/3)

Models 203.0 and 203.2 with Parktronic system and the back salonny lamp:

17, conclusion 1

Red and green 0.75

Alarm PTS display (the back salonny lamp) (A44/3)

4

15R

1, conclusion 3

Black and green 2.5

Fuel pump (M3)

15

5

15R

-

-

Reserve relay 2 (N10/2ks)

20

6

30

28, conclusion 1

-

-

25

7

15R

-

-

Reserve relay 1 (N10/2kD)

20

8

30

23, conclusion 4

Red and yellow 0.75

Module of 1 amplifier of the aerial of back glass (A2/71)

07-5

ATA with TS and IMS:

4, conclusion 4

Red-dark blue 0.5

Siren of the alarm system (Н3)

4, conclusion 5

Red-white 0.5

Sensor of an inclination of ATA (В33)

9

30

22, conclusion 4

Red-dark blue 2.5

Control unit of the ceiling control panel (N70)

25

10

15R

20, conclusion 5

Black 2.5

Heater of back glass (R1)

40

11

15R

20, conclusion 3

-

-

20

12

15R

Models 203.2:

20, conclusion 2

Black and green 1.5

Internal nest (X58/1)

15

13

15R

19, conclusion 1

Black and yellow 0.75

Pneumopump of an orthopedic seat (М40)

5

System of voice-activated control (VCS):

5, conclusion 2

Black and yellow 0.5

Block of voice-activated control (A35/11)

Cell phone Motorola Star TAC, retrofit:

5, conclusion 2

Black and yellow 0.5

The D2B interface for the portable mobile phone (A59/1)

Models 203.0 and 203.2 with lamps for reading:

12, conclusion 5

Black-gray 0.5

The back lamp for reading (E15/3)

Models 203.0 and 203.2 with lamps for reading and Parktronic system:

12, conclusion 5

Black-gray 0.5

Alarm PTS display (the back salonny lamp) (A44/3)

12, conclusion 5

Black-gray 0.5

PTS control unit (N62)

14

15R

30, conclusion 1

Black and yellow 1.5

- Э / motor of a cleaner of back glass (M6/4)

15

15

-

-

-

- Relay of a jellied mouth, receiver of polarity of 1 (N10/2kG)

10

16

30

For VSC:

20

5 conclusion 1

Red-violet 0.5

Block of voice-activated control (A35/11)

For CTEL Motorola Star TAC, retrofit:

5 conclusion 1

Red-violet 0.75

- The D2B interface for the mobile phone (A59/1)

17

30

S17 (external safety lock)

Red and green 2.5

For a turnbuckle:

20

- Socket of a turnbuckle (N28/1)

18

30

S18 (external safety lock)

Red and yellow 2.5

For a turnbuckle:

20

- 13-contact socket of a turnbuckle (Х58)

19

30

S19 (external safety lock)

Red-white 1.5

- Pneumopump of a multicircuit seat (М40)

20

20

30

S20 (external safety lock)

Red-dark blue 0.75

For blackout of back glass:

7.5

- blackout of back glass (К74)

Relay

Location

Designation

And

Relay of the fuel pump (N10/2kA)

In

Relay 2, plug 15R (N10/2kv)

With

Reserve relay 2 (N10/2ks)

D

Reserve relay 1 (N10/2kD)

Е

Relay of a heater of back glass (N10/2ke)

F

Relay 1, plug 15R (N10/2kF)

G

Relay of a jellied mouth, switch of polarity of 1 (N10/2kG)

N

Relay of a jellied mouth, switch of polarity of 2 (N10/2kn)

Box of safety locks in salon


Predokhr.

Plug

Socket

Color and section of a wire, mm2

Appointment

Current (And)

21

30

X35/1 (socket of the left forward door)

Is red white / 2.5

Control unit of the left forward door (N69/1)

30

22

30

X35/2 (socket of the right forward door)

Is red gray / 2.5

Control unit of the right forward door (N69/2)

30

23

30

-

-

Lighter

15

24

30

-

-

The spare

-

25

30

5, conclusion 4

Is red green / 2.5

Control unit of the top control panel (N72/1)

10

26

30

1, conclusion 26

Is red violet / 4.0

Sound amplifier (A72/13)

30

27

30

2, conclusion 1

Is red yellow / 2.5

The control unit the electric drive of adjustment of a driver's seat (with memory) (N32/1)

30

28

30

-

-

The spare

-

29

30

X35/33 (frame floor/socket of emergency supply)

Is red dark blue / 2.5

For a taxi: Special module of management of refusals (SVMCM) (N26/9)

30

30

30

1, conclusion 3

Is red green / 4.0

Block of air circulation of a heater (А32)

40

31

30

And, conclusion 9

Is red violet / 1.5

EIS control unit (N73)

20

32

30

X35/3 (socket of the left back door)

Is red black / 2.5

Control unit of the left back door

30

33

30

X35/4 (socket of the right back door)

Is red white / 2.5

Control unit of the right back door

30

34

30, 15

-

Is red violet / 1.5

Socket coupling клеы 30 (Z4/3)

07.5

Z4/3 (socket coupling клеы 30)

Is red violet / 1.0

For system of an emergency call (USA) and the additional cell phone:

Cell phone and TELE AID D2B transceiver (A35/17)

Is red violet / 1.5

For built-in phone:

Cell phone and D2B transceiver (A35/13)

Is red violet / 1.5

For system of giving of a distress signal of TELE AID:

Cell phone and TELE AID D2B transceiver (A35/17)

Is red violet / 0.75

For the additional cell phone:

Telephone interface (A34/4)

27 (socket coupling клеы 30)

CTEL jack (A28/3)

The red/0.5

For the additional cell phone:

Telephone interface (A34/4)

X39/37 (Socket of portable phone)

Is red violet / 1.0

For Japanese models, models 203.0 and systems of an emergency call:

Cell phone and TELE AID D2B transceiver (A35/17)

35

30

1, conclusion 1

Is red black / 2.5

For a stationary heater (STH):

30

Block of a heater of STH (А6)

36

30

-

The red/1.5

For governmental cars (STH):

30

37

30

2, conclusion 2

Is red white / 2.5

Control unit of the vacuum pump of the brake amplifier (N65/3)

25

38

30

2, conclusion 1

Is red green / 2.5

Control unit of the electric drive of the right forward seat (N32/2)

30

39

30

-

-

The spare

-

40

30

X35/33 (frame floor/socket of emergency supply)

Is red white / 2.5

For a taxi and governmental cars:

30

Special module of management of refusals (SVMCM) (N26/9)

41

30

1, conclusion 2

Is red dark blue / 0.5

Control unit of the top control panel (N72/1)

07.5

1, conclusion 14

Is red dark blue / 0.75 2

For an automatic heater:

Control unit of the press button of a heater (N18)

For automatic In (AAS):

Control unit of the AAS press button (N22)

For AAS comfort system:

Control unit of the AAS "comfort" press button (N22/7)

42

30

1, conclusion 5

Is red yellow / 0.5

Control panel (А1)

07.5


Box of safety locks and the relay in an impellent compartment


Relay

Location

Appointment

I

Relay of a fanfare horn (N10/1kl)

To

Relay of the plug 87, chassis (N10/1kk)

L

Relay of high-speed modes (1 and 2) screen wipers (N10/1kL)

M

Relay of the plug 15R (N10/1km)

N

The operating relay of the pump KSG (N10/1kN)

About

Relay of the pump of a podmeshivaniye of secondary air (N10/1ko)

R

Relay of the plug 15 (N10/1kr)

Q

Relay of inclusion/switching off of screen wipers (N10/1kQ)

R

Plug 87 relay, engine (N10/1kR)

S

Relay of a starter (N10/1kS)

Predokhr.

Plug

Socket

Color and section of a wire, mm2

Appointment

Current (And)

43а

15R

-

-

Relay of a fanfare horn (N10/1kl)

15

43b

30

-

-

Relay of a fanfare horn (N10/1kl)

15

44

15R

23

Black жёлтый/0.5

For system of giving of a distress signal of TELE AID:

5

TELE AID control unit (A35/8)

For built-in phone:

D2B interface (А59)

For the additional cell phone:

Telephone interface (A34/4)

For system of an emergency call (USA):

Coupling of the socket 15R (Z3/12)

For system of an emergency call (Japan):

TELE AID control unit (A35/8)

45

15R

12, conclusion 4

Pink чёрный/0.75

It is protected by a safety lock via the coupling of the socket of a lateral safety cushion (Z3/31):

07.5

SRS control unit (N2/7)

46

15

-

-

Relay of inclusion/switching off of screen wipers (N10/1kQ)

40

47

15R

Illumination (except illumination of deflectors):

15

19, conclusion 6

Black жёлтый/0.75

Illuminations of a ware box with the sensor switch (E13/2)

19, conclusion 6

Black жёлтый/1.0

Illumination of a lobby of the ashtray/lighter

48

15

3, conclusion 1

Black зеленый/1.0

Control unit of the vacuum pump of the brake amplifier (N65/3)

15

For the engine 112:

17, conclusion 3

Black жёлтый/1.5

The coupling of the socket (Z3/29) 15 protected by a safety lock

49

15

12, conclusion 3

Black красный/0.5

SRS control unit (N2/7)

07.5

50

15

19, conclusion 4

Black зеленый/0.5

Module of the switch of lighting (S1)

5

14, conclusion 1

-

-

51

15

19, conclusion 8

Black коричневый/0.5

Control panel (А1)

07.5

2, conclusion 6

The black-and-white/0.75

AAS (automatic To/in) with the built-in electromotor of the additional fan (M4/7)

For AAS "comfort":

19, conclusion 8

Black коричневый/0.5

Via the socket of sensors of climate control (X85/9):

Sensor of refusals of AAS (B31/1)

Sensor of sunlight of AAS (4 pieces) (B32/2)

For all cars with xenon headlights:

24, conclusion 1

Black розовый/0.75

Left block headlight (Е1)

Right block headlight (Е2)

52

50

17, conclusion 1

The violet/2.5

Starter (М1)

15 +

53

87

13, conclusion 3

Violet-dark blue 0.5

The back SAM control unit with a box of the relay and safety locks (N10/2)

15

Engine 111:

2, conclusion 9

Red-dark blue 1.5

ECM (N3/10)

15

Engine 112:

2, conclusion 9

Red-dark blue 0.75

ECM (N3/10)

15

3, conclusion 8

Red-dark blue 0.75

Valve of a purge of an adsorber (Y58/1)

15

17, conclusion 2

Red-dark blue 1.5

Socket coupling клеы 87М1е (Z7/35)

15

Engine 611:

2, conclusion 9

Red-dark blue 2.5

Control unit of system of contact ignition (CDI) (N3/9)

25

3, conclusion 8

Red-dark blue 2.5

Control unit CDI (N3/9)

25

54

87

Diesel engines:

2, conclusion 2

Black-red 2.5

Control unit CDI (N3/9)

07.5

17, conclusion 4

Black-red 1.0

Heater of the inlet pipeline (R8)

07.5

Petrol engines:

2, conclusion 2

Black-red 2.5

Socket coupling клеы 87М1е (Z7/36)

15

17, conclusion 4 (only engines 112)

Red and green 1.0

(only engines 112)

Socket coupling клеы 87М1е (Z7/36)

07.5

55

87

7, conclusion 5

Red and green 0.5

Sensor of turn of a steering wheel (N49)

07.5

DTR:

21, conclusion 1

Red-dark blue 0.75

DTR control unit (N63/1)

АТ:

9, conclusion 1

Red-white 0.75

ETC control unit (N15/3)

9, conclusion 3

Red-dark blue 0.75

Electronic control unit of the lever of the selector (N15/5)

Automated by a check point (Sequentronic):

9, conclusion 1

Red-white 1.0

Sequentronic control unit (N15/6)

9, conclusion 3

Red-dark blue 0.75

Sensor switch of provision of transmission (S16/10)

56

87

7, conclusion 3

Red-dark blue 0.75

ESP and BAS control unit (N47-5)

5

7, conclusion 4

Red and yellow 0.5

Sensor switch of stoplights (S9/10)

57

30z

19, conclusion 1

Red-black 0.5

Sensor of turn of a steering wheel (N49)

5

19, conclusion 1

Red-dark blue 0.5

Control unit of electronic ignition / датчика-выключателя disconnections of a chain of a starter of stoplights (N73)

Engine 112:

2, conclusion 4

Red 0.75

ECM (N3/10)

58

30

Automated by a check point (Sequentronic):

9, conclusion 4

Black-dark blue 0.5

Sequentronic control unit (N15/6)

40

59

30

8, conclusion 2

Red 4.0

ESP and BAS control unit (N47-5)

50

60

30

8, conclusion 1

Red 2.5

ESP and BAS control unit (N47-5)

40

61

30

Automated by a check point (Sequentronic):

9, conclusion 6

Black and green 0.5

Sequentronic control unit (N15/6)

15

62

30

2, conclusion 11

Red and green 0.75

DLC socket (X11/4)

5

19, conclusion 2

Red and yellow 0.5

Module of switching of lamps (S1)

7, conclusion 7

Pink and green 0.5

Sensor switch of stoplights (S9/1)

63

30

19, conclusion 5

Red and green 0.5

Module of switching of lamps (S1)

5

64

30

Radio receiver:

11, conclusion 2

Red-dark blue 2.5

Radio (А2)

10

COMAND version:

11, conclusion 2

Red-dark blue 2.5

Display and control unit functioning of COMAND (A40/3n1)

65

15

Podmeshivaniye of air in an exhaust:

17, conclusion 5

Red-white 4.0

Electric air pump (М33)

40

Efforts of a tightening of carving connections, Nanometer

The moments of an inhaling of fixture are given also in the text of Head and on some иллюстрациях*.

*vydelenny in the text a bold print the moments of an inhaling are subject to exact observance; the efforts not allocated with a bold print are given only roughly.