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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class W123 (from 1976 to 1985, the year of issue)

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Mercedes-Benz W123
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W123
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Repair of starter
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Schematic diagrams of electrical equipment
Model "250" engine with 123,026
Model "280" engine with 123,030
Models "280E" to the motor 123,033
Models "280E" (engine 123,033, starting with the chassis number 081 279) and the "280SE" (engine 123,053, starting with the chassis number 021 430)
Models "280TE" with the engine 123,093
Models "280TE" with 123,093 engines, starting with the chassis number 007 619
Body and Equipment
 


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Models "280TE" with 123,093 engines, starting with the chassis number 007 619




Legend schematic circuit diagrams

Number

Designation

1

Left block headlamp:

a

  • beam filament

b

  • beam filament

from

  • lamp Position / parking lights

e

  • Lamp Indicator

2

Sensor control lamp brake fluid level

3

Contact wear left front brake pads

4

Contact Wear the right front brake pads

5

Device combination:

a

  • indicator lamp left turn indicator

b

  • warning lamp beam headlights

from

  • coolant temperature

d

  • fuel gauge

e

  • fuel reserve warning lamp

f

  • warning lamp battery discharge

g

  • warning lamp for brake pad wear

h

  • control lamp brake fluid level and the parking brake

i

  • lamps lighting devices

j

  • rheostat lighting devices

k

  • alarm buzzer

l

  • Right indicator lamp Indicator

m

  • Digital Watch

6

Cigarette lighter with lamp ashtray

7

Radio

8

The right block headlamp:

a

  • beam filament

b

  • beam filament

from

  • lamp Position / parking lights

d

  • light fog lights

e

  • Lamp Indicator

9

Switch Mode Launcher Fuel

10

Valve pilot fuel

eleven

Automatic antenna *

12

Switch the parking brake

13

Sensor coolant temperature

14

Contact enable emergency buzzer

15

Front ceiling with switch

16

Switch the ceiling in front of the left front door

17

Switch the ceiling in the front right door

18

A two-tone beep (fanfare)

19

Sensor speed controller software *

20

Amplifier software control speed *

21

Actuator speed control software *

22

Electronic switch / relay-breaker alarm

23

The switch of illumination of a ware box

24

Courtesy light glove box

25

Fuse block

26

The heating element is warming up the engine

27

The relay of the fuel pump with an electronic speed limiter, engine warming up

28

Magnetic coupling air conditioner compressor *

29

Relay I activate windows *

thirty

Relay II switching windows *

31

A door window switch *

32

Switch software control speed *:

A

  • turned off

V

  • deceleration setting /

SP

  • return to the previous rate of movement

AT

  • acceleration / tuning

33

The combined steering column switch:

a

  • Turn signal switch

b

  • alarm switch headlights

from

  • dimmer switch

e

  • speed switch windscreen wiper

I

  • intermittent operation

II

  • low speed

III

  • high speed

34

Horn switch

35

Windscreen wiper motor

36

Relay intermittent operation of the windscreen wiper

37

Ignition Switch

38

Light switch

39

The electric sunroof *

40

Switch sunroof with electric *

41

The solenoid valve of an automatic transmission *

42

Foot Switch enable low gear *

43

The switch of blocking of a starter and reversing light *

44

The gauge of emergency pressure of the air conditioning compressor * (inclusion at 2.6 kgf / cm 2, off at 2.0 kgf / cm 2)

45

C relay II *

46

Switch fan with light

47

Brake light switch

48

Washer pump Windshield

49

Motor cleaner left headlight *

50

Right headlight wiper motor *

51

Relay headlight cleaners *

52

Headlight washer pump *

53

Transistor Ignition Switch

54

Contactless ignition distributor

55

Spark plug

56

Ignition coil

57

Lighting:

a

  • handle air flow direction

b

  • heater control knobs

from

  • switch*

58

The changeover valve lift control system throttle

59

Thermoelectric switch (52 ?� C) desiccant air conditioner *

60

Thermoelectric switch (100 ?� C)

61

Additional fan *

62

Relay additional fan *

63

The changeover valve receipts or external return air *

64

Temperature sensor air conditioner *

65

Switch air conditioning temperature selection *

66

Incremental resistance of the fan motor

67

Fan motor

68

0.6 Ohm series resistor

69

Electric window left rear door *

70

Window Switch Left Rear Door *

71

Power Window Switch *:

a

  • Window Switch Left Rear Door

b

  • safety switch

from

  • Switch the left front door window

d

  • window switch right front door

e

  • Window Switch Right Rear Door

72

Electric window left front door *

73

0.4 Ohm series resistor

74

Time relays heated rear window *

75

Switch heated rear window *

76

Lighting scenes shift lever *

77

Starter

78

Accumulator battery

79

Generator with electronic voltage regulator

80

The relay-breaker intermittent wiper glass tailgate

81

The electric tailgate glass cleaner

82

Sensor fuel level indicator

83

Fuel pump

84

The wiring harness connector to the rear lights

85

Switch to lock the tailgate wiper motor switch or intermittent operation cleaner tailgate

86

TDC sensor

87

Electric window right front door *

88

DLC

89

Window Switch Right Rear Door *

90

Electric window right rear door *

91

Rear ceiling with switch

92

Left tail light:

a

  • Lamp Indicator

b

  • red light / parking light

from

  • light stoplight

93

Rear fog light

94

Washer pump glass tailgate

95

Switch to the back cover release button switch or ceiling washer pump glass tailgate

96

Bulb license plate light

97

Heated rear screen *

98

Switch the ceiling in the front left rear door *

99

Switch the ceiling in the front right rear door *

100

The switch in the tailgate

101

The point of connection with "weight" wiring tailgate

102

Bulb reverse light

103

Right tail light:

a

  • Lamp Indicator

b

  • red light / parking light

from

  • light stoplight

* Depending on the configuration.

Points of connection with "weight"

Number

Designation

M1

the main point of connection with "weight" (for instrument cluster)

M2

front right point of connection with "weight" (about the headlight)

M3

point of connection with "weight" on the mudguard of the left front wheel (for the ignition coil)

M4

point of connection with "weight" of the front cabin ceiling

M5

"Mass" of the engine

M6

point of connection with "weight" in the luggage compartment on the left wing of the mudguard

M7

point of connection with "weight" in the luggage compartment on the right wing mudguard

M8

point of connection with "weight" on the tailgate


Schematic diagram of electrical equipment (1)


Schematic diagram of electrical equipment (2)





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