Mercedes-Benz E-class W123 - Repair manual and operation

11.13.4. The 280E models (the engine 123.033, since the chassis No. 081 279) and "280CE" (the engine 123.053, since the chassis No. 021 430)

Legend of the schematic electric circuit of electric equipment

№	Designation
1	Left block headlight:
and	thread of driving beam
b	thread of passing beam
with	lamp of dimensional/parking light
d	lamp of fog light
е	lamp of the index of turn
2	Sensor of a control lamp of level of brake fluid
3	Contact sensor of wear of overlays of the left forward brake
4	Contact sensor of wear of overlays of the right forward brake
5	Combination of devices:
and	control lamp of the left index of turn
b	control lamp of driving beam of headlights
with	index of temperature of cooling liquid
d	index of level of fuel
е	control lamp of a reserve of fuel
f	control lamp of the category of the rechargeable battery
g	control lamp of wear of brake slips
h	control lamp of level of brake fluid and turning on of the parking brake
i	lighting lamps of devices
j	rheostat of lighting of devices
k	emergency sound signaling device
l	control lamp of the right index of turn
m	electronic clock
6	The lighter with the ashtray lighting lamp
7	Radio receiver *
8	Right block headlight:
and	thread of driving beam
b	thread of passing beam
with	lamp of dimensional/parking light
d	lamp of fog light
е	lamp of the index of turn
9	Switch of the mode of starting supply of fuel
10	Valve of starting fuel
11	Automatic antenna *
12	Switch of a control lamp of the parking brake
13	Sensor of temperature of cooling liquid
14	Contact of inclusion of an emergency sound signaling device
15	Forward plafond with the switch
16	The plafond switch in a rack of the left door
17	The plafond switch in a rack of the right door
18	Two-tone sound signal (fanfares)
19	Sensor of the program regulator of speed of the movement *
20	Amplifier of the program regulator of speed of the movement *
21	Executive drive of the program regulator of speed of the movement *
22	Switch / реле-прерыватель alarm system
23	Switch of illumination of a ware box
24	Plafond of illumination of a ware box
25	Block of fuses
26	Heating element of system of warming up of the engine
27	The relay of the fuel pump with the electronic limiter of speed of system of warming up of the engine
28	Electromagnetic coupling of the compressor of the conditioner
29	Relay I of inclusion of window regulators *
30	Relay II of inclusion of window regulators *
31	Door switch of a window regulator
32	Switch of the program regulator of speed движения*:
And	it is switched off
V	delay/control
SP	return on the former speed of the movement
In	dispersal/control
33	The combined understeering switch:
and	switch of indexes of turn
b	alarm system switch driving beam of headlights
with	switch of light of headlights
d	windshield washer switch
е	switch of speed of screenwash
I	faltering work
II	small speed
III	high speed
34	Switch of a sound signal
35	Electric motor of screenwash
36	Relay of a faltering operating mode of screenwash
37	Ignition switch
38	Lighting switch
39	The hatch electric motor in a roof *
40	The hatch switch in a roof with the electric drive *
41	Electromagnetic valve of automatic transmission *
42	Switch of foot inclusion of the lowest transfer *
43	Switch of blocking of a starter and light of a backing *
44	The sensor of emergency pressure of the compressor of the conditioner * (inclusion at 2,6 kgfs/cm 2, switching off at 2,0 kgfs/cm 2)
45	Conditioner II relay *
46	The fan switch with lighting
47	Switch of stoplights
48	Windshield washer pump
49	Electric motor of a cleaner of a left headlight *
50	Electric motor of a cleaner of a right headlight *
51	Relay of cleaners of headlights *
52	Pump of washers of headlights *
53	Transistor switchboard of ignition
54	Contactless distributor of ignition
55	Spark plugs
56	Ignition coil
57	Lighting:
and	handles of the direction of a stream of air
b	handles of management of a heater
with	switch *
58	The switching valve of system of regulation of provision of a butterfly valve
59	Thermoelectric switch (52 °C) of a conditioner dehumidifier *
60	Thermoelectric switch (100 °C)
61	Additional fan *
62	Relay of the additional fan *
63	The switching valve of intake of external or recirculation air *
64	Conditioner temperature sensor *
65	Switch of the choice of temperature of the conditioner *
66	Additional resistance of the electric motor of the fan
67	Fan electric motor
68	Additional resistance of 0,6 Ohms
69	Electric motor of a window regulator of the left back door *
70	Switch of a window regulator of the left back door *
71	Block of switches стеклоподъемников*:
and	switch of a window regulator of the left back door *
b	safety switch
with	switch of a window regulator of the left forward door
d	switch of a window regulator of the right forward door
е	switch of a window regulator of the right back door
72	Electric motor of a window regulator of the left forward door *
73	Additional resistance of 0,4 Ohms
74	Timer of heating of back glass *
75	Switch of heating of back glass *
76	Lighting of the coulisse of the lever of the selector of transfers *
77	Starter
78	Rechargeable battery
79	The generator with the electronic regulator of tension
80	The plafond switch in a rack of the left back door *
81	Switch of a back plafond
82	The plafond switch in a rack of the left back door *
83	Fuel pump
84	Back plafond
85	The socket of a plait of wires to back lamps
86	Lighting lamp of the luggage compartment
87	Sensor of the index of level of fuel
88	VMT sensor
89	Electric motor of a window regulator of the right forward door *
90	Diagnostics block
91	Electric motor of a window regulator of the right back door *
92	Switch of a window regulator of the right back door *
93	Left back lamp:
and	lamp of the index of turn
b	lamp of red/parking light
with	backing light lamp
d	stoplight lamp
е	lamp of fog light
94	Lighting lamp of registration plate
95	Element of heating of back glass *
96	Right back lamp:
and	lamp of the index of turn
b	lamp of red/parking light
with	backing light lamp
d	stoplight lamp

* Depending on a complete set.

** Last modifications.

Points of connection with "weight"

№	Designation
M1	the main point of connection with "weight" (behind a combination of devices)
Sq.m	forward right point of connection with "weight" (about a block headlight)
M3	point of connection with "weight" on a mudguard of the left forward wheel (for the ignition coil)
M4	point of connection with "mass" of a forward plafond of salon
M5	"mass" of the engine
M6	point of connection with "weight" in the luggage compartment on a mudguard of the left wing
M7	point of connection with "weight" in the luggage compartment on a mudguard of the right wing

Schematic electric circuit of electric equipment (1)

Schematic electric circuit of electric equipment (2)