19. Schematic electric circuits

General information  

As it is impossible to provide in this manual all schematic diagrams for every year of release, the most typical schemes and those which are necessary most often are given below.

Before beginning troubleshooting in any chain, check safety locks and breakers of a chain (if they are) to make sure that they are whole. Make sure also that the battery is completely charged and check contacts of wires (see the Head Routine maintenance of the car). Checking a chain, make sure that all contacts are pure, plugs did not break off and were not disconnected.

Color coding of wires

BK Black
BL Blue
BR Korichnev.
GE Yellow
GN Green
GR Gray or green
GY Gray
OR Orange
PK Pink
R Red
RS Pink
RT Red
SW Black
TN Yellow коричн.
V Violet
VI Violet
W White
WS White
Y Yellow

Typical alarm lamps of a starter, battery charging, horn, the breaker of the alarm system and indexes of turn (1 of 4)

Key to the scheme

1 — the Left signal of a backing
2 — the Right signal of a backing
3 — the Battery
4 — the Generator
5 — the Two-tone horn
6 — the Right forward index of turn
7 — the Right back index of turn
8 — the Left back index of turn
9 — the Left forward index of turn
10 — the horn Relay
12 — the Relay of the supercharger of a heater/heater of back glass
13 — the Relay of an alarm lamp of the alarm system
14 — the Starter
15 — the ignition Lock
16 — the horn Switch
17 — the Switch of an alarm lamp of the alarm system
18 — the Switch of indexes of turn

19 — the backing signal Switch
W1 — the food distributor Tire
[1 — to an instrument guard (see 4 of 4)
2 — to the block of electronic control (see 3 of 4)
3 — to the relay of switching distant - passing beam of headlights
4 — to an instrument guard (see 4 of 4)
5 — to the switch of management of a mirror (see 3 of 4)
6 — to an instrument guard (see 4 of 4)
7 — to the stoplight switch (see 3 of 4)
8 — to the block of electronic control (see 3 of 4)
9 — to the switch of adjustable illumination of a guard (see 2 of 4)
10 — to the switch of a back lamp / illumination of registration plate (see 3 of 4)
11 — to an instrument guard (see 4 of 4)]

Typical head/fog lights and illumination of salon (2 of 4)

Key to the scheme

1 — the Left lighting lamp of salon
2 — the Right lighting lamp of salon
3 — the Left headlight of driving beam
4 — the Right headlight of driving beam
5 — the Left headlight of the neighbor light
6 — the Right headlight of the neighbor light
7 — the Left forward fog light
8 — the Right forward fog light
9 — ashtray Illumination (behind)
10 — the Relay of the high beam headlamp
11 — the Relay of a headlight of passing beam
12 — the Relay of a forward fog light
13 — the Tester of lamps of the main lighting
14 — the Relay of switching distant - passing beam of headlights 1
15 — the Relay of switching distant - passing beam of headlights 2
16 — Resistance of switching distant - passing beam of headlights 1
17 — Resistance of switching distant - passing beam of headlights 2
18 — the blinking Switch driving beam of headlights
19 — Contact of a forward left door
20 — Contact of a forward right door

21 — the Switch of a back fog light
22 — the Switch of a forward fog light
23 — the Switch of passing beam of headlights
24 — the Switch of adjustment of illumination of devices and a forward fog light
25 — Contact of a back left door
26 — Contact of a back right door
W1 — the food distributor Tire
[1 — Ignition incl.
2 — to an instrument guard (see 4 of 4)
3 — to the block of electronic control (see 3 of 4)
4 — to an instrument guard (see 4 of 4)
5 — to the block of electronic control (see 3 of 4)
6 — to the block of electronic control (see 3 of 4)
7 — to an instrument guard (see 4 of 4)
8 — to a safety lock 10 (see 1 of 4)
9 — to the switch of an alarm lamp of the alarm system (see 1 of 4)
10 — to the lighter (see 4 of 4)
11 — to the switch of a back lamp / illumination of registration plate (see 3 of 4)]

The typical control system, mirrors with the electric drive, a stoplight and a parking lamp (3 of 4)

Key to the scheme

1 — the Block of electronic control
2 — the Left back lamp
3 — the Right back lamp
4 — the Right parking lamp
5 — the Left parking lamp
6 — the Right lamp of illumination of registration plate
7 — the Left lamp of illumination of registration plate
8 — the Additional stoplight
9 — the Left stoplight
10 — the Right stoplight
11 — the Module of control of malfunction of lamps
12 — the Switch of a parking lamp 1
13 — the Switch of a parking lamp 2
14 — the Switch of a back lamp and illumination of registration plate
15 — the stoplight Switch
16 — the liquid level Sensor in the washer tank

17 — the Sensor of level of cooling liquid
18 — the oil level Sensor
19 — the Switch of management of mirrors
20 — the mirror Motor with the electric drive
21 — the Additional motor of a mirror with the electric drive
W1 — the food distributor Tire
[1 — to a safety lock 6 (see 1 of 4)
2 — to an instrument guard (see 4 of 4)
3 — to an instrument guard (see 4 of 4)
4 — to a safety lock 10 (see 1 of 4)
5 — to a safety lock 24 (see 1 of 4)
6 — to a safety lock 21 (see 2 of 4)
7 — to a tester of lamps of the main lighting (see 2 of 4)
8 — to a safety lock 19 (see 1 of 4)
9 — to the switch of an alarm lamp of the alarm system (see 1 of 4)
10 — to the lighter (see 4 of 4)
11 — to illumination of a back ashtray (see 2 of 4)]

Typical instrument guard and the lighter (4 of 4)

Key to the scheme

1 — the Instrument guard
2 — the Switch of an alarm lamp of the parking brake
3 — the Sensor of level of brake fluid
4 — the oil pressure Sensor
5 — the Sensor of temperature of cooling liquid
6 — the Right back sensor of wear of brake shoes
7 — the Left forward sensor of wear of brake shoes
8 — the Fuel level sensor 1
9 — the Fuel level sensor 2
10 — the speedometer Sensor
11 — the Lighter
12 — the Alarm lamp of a heater
W1 — the food distributor Tire

Key to the scheme of an instrument guard

a — the Alarm lamp of turning on of the parking brake
b — the Alarm lamp of low level of brake fluid
with — the Alarm lamp of low pressure of oil
d — the Central alarm lamp
e — the Reminder on approach of term of planned maintenance
f — the Alarm lamp of wear of brake shoes
g — the Measuring instrument of temperature of cooling liquid

h — the Alarm lamp of a reserve of fuel
i \Fuel level measuring instrument
j — the Tachometer
k — Management of a regime of economy
l — the Alarm lamp of the left index of turn
m — the Alarm lamp of the right index of turn
n — the Speedometer
o — the Alarm lamp of inclusion of driving beam of headlights
p — the Alarm lamp of inclusion of a forward fog light
q — the Alarm lamp of inclusion of a back fog light
r — the Alarm lamp of a discharge of the battery
s — Illumination of an instrument guard
[1 — to the block of electronic control
2 — to a safety lock 10 (see 1 of 4)
3 — to a safety lock 12 (see 1 of 4)
4 — to the switch of a back lamp / illumination of registration plate (see 3 of 4)
5 — to the generator (see 1 of 4)
6 — to the relay of the supercharger of a heater/heater of back glass (see 1 of 4)
7 — the Socket, the main conducting - conducting of the engine
8 — the Socket, the main conducting - conducting of the engine
9 — to a safety lock 21 (see 2 of 4)
10 — to the switch of an alarm lamp of the alarm system (see 1 of 4)
11 — to the switch of a back fog light (see 2 of 4)
12 — to a safety lock 29 (see 2 of 4)
13 — to a safety lock 1 (see 2 of 4)
14 — to illumination of a back ashtray (see 2 of 4)]

Schematic diagram of a typical control system of the engine of" Motronic"

1 — the Block of electronic control (ECU)
2 — the speed control Relay
3 — temperature Sensor
4 — the Conditioner
5 — I Will corrode conductings of the car
6 — the Switch of a butterfly valve
7 — the air consumption Sensor
8 — the speed Sensor
9 — the synchronization Sensor
10 — the Relay 1
11 — Rele2
12 — the oil pressure Sensor
13 — temperature Transmitter
14 — I Will corrode checks
15 — the engine Plug
16 — the Battery
17 — Spark plugs

18 — the ignition Distributor
19 — the ignition Coil
20 — the Starter
21 — the Generator
22 — the situation Transmitter
23 — the Plug disconnected for automatic transmission
24 — the Sensor of temperature of cooling liquid
25 — the Fuel nozzle
26 — the Electromagnetic valve
27 — the food Distributor
28 — oil Pressure
29 — temperature Measuring instrument
30 — the Electric fuel pump
31 — the Reminder on approach of term of planned maintenance
32 — the drive Motor
33 — temperature Sensor

Schematic diagram of a typical control system of speed

1 — the Shtekerny socket - the central section of an instrument guard (26 contacts)
2 — the Switch of a steering column
3 — the Instrument guard
4 — the Shtekerny socket - the range indicator
5 — the Indicator of range of D
6 — N range Indicator
7 — R range Indicator
8 — the Shtekerny socket - a speedometer exit
9 — the Socket - an instrument guard (2 contacts)
10 — the Shtekerny socket - the switch of a steering column
11 — the Shtekerny socket - the special equipment

12 — the Switch of a steering column
13 — the Shtekerny socket - back section to the central section (29 contacts)
14 — the stoplight Switch
15 — the Shtekerny socket - the drive motor
16 — the Socket - the coupling switch to a crossing point
17 — the Left stoplight
18 — the Right stoplight
19 — the Block of electronic control - a control system of speed
20 — the drive Motor - a control system of speed
21 — the Crossing point (only for AT)
22 — the coupling Switch

The typical schematic diagram for the central system of blocking of doors, the anticreeping alarm system, the on-board computer, an additional heater and the digital watch (1 of 2)

The typical schematic diagram for the central system of blocking of doors, the anticreeping alarm system, the on-board computer, an additional heater and the digital watch (2 of 2)

To the typical schematic diagram of the central system of blocking of doors, anticreeping alarm system, on-board computer, additional heater and digital watch

1 — the Plug - back section to the central section
2 — the plug Socket for connection of the special equipment
3 — the Socket for the control unit of the central blocking of doors
4 — the Electronic control unit the central blocking of doors (a trailer disk of a rack And)
5 — the Plug - conducting of a door of the driver to back section
6 — the Plug - a connecting wire of system of the central blocking to conducting of a door of the driver (13 contacts)
7 — the Plug - a connecting wire of the central blocking to conducting of a door from the passenger
8 — the Plug - a wire of system of the central blocking at the driver's doors to the switch
9 — the Switch of the central blocking / разблокирующий the lock mechanism (the driver's door, on the lock)
10 — Connection of the motor of the central blocking with the driver's door (6 contacts)
11 — the Motor of the central blocking - the driver's door
12 — the Plug - conducting of a door of the passenger to the microswitch
13 — Mikrovyklyuchatel (the passenger's door, on the lock)
14 — the Motor of the central blocking - the passenger's door
15 — the Motor of the central blocking - the passenger's door
16 — Connection of the motor of the central blocking with a trunk lid (6 contacts)
17 — the Motor of the central blocking - a trunk lid
18 — Connection of the motor of the central blocking with a cover of a bulk opening of the fuel tank (6 contacts)
19 — the Motor of the central blocking - a cover of a bulk opening of the fuel tank
20 — Connection of the motor of the central blocking with a back left door (6 contacts)
21 — the Motor of the central blocking - a back left door
22 — Connection of the motor of the central blocking with the right door (6 contacts)
23 — the Plug - a connecting wire of the central blocking to the right back door (7 contacts)
24 — the Plug - a connecting wire of the central blocking to the left back door (7 contacts)
25 — the Motor of the central blocking - the right back door
26 — the Switch of a heater of back glass
27 — the Electronic control unit system of protection against theft (to the left of a steering column)
28 — the Socket of an electronic control unit system of protection against theft (26 contacts)
29 — the relay block Socket (4 contacts)
30 — the Socket of an electronic control unit system of protection against theft (4 contacts)
31 — the Plug 150 (in the main conducting)
32 — the Light-emitting diode of the anticreeping alarm system
33 — the luggage carrier illumination Plug
34 — luggage carrier Illumination
35 — the Forward left sensor of contact of a door
36 — the Forward right sensor of contact of a door
37 — the Back left sensor of contact of a door
38 — the Back right sensor of contact of a door
39 — Contact of a trunk lid

40 — Contact of a cowl
41 — the Heater of back glass
42 — the Plug - the central section to conducting of the onboard computer / the anticreeping alarm system
43 — the Horn
44 — the light-emitting diode Plug
45 — the Diode
46 — the Plug - a wire of the anticreeping alarm system to a connecting wire of the central blocking
47 — the Sound signal (to the left of a steering column)
48 — the Socket of a sound signal
49 — the Plug - the central section to LE-Jetronic conducting
50 — the ignition Lock
51 — the Remote switch of the on-board computer
52 — the Plug - the on-board computer to a wire of the sensor of temperature of external air
53 — the Plug - a wire of the sensor of temperature of external air to the sensor
54 — the Sensor of temperature of external air (the lower forward panel)
55 — the Plug - a wire of an additional heater to the automatic antenna
56 — the Electronic control unit a heater on the parking (under the right seat)
57 — the Socket of an electronic control unit
58 — the heater Relay for the parking (on a heater)
59 — the Plug - a wire of the on-board computer to a wire of an additional heater
60 — the Plug - the central section to an instrument guard
61 — the Socket of an instrument guard
62 — the Electronic control unit the on-board computer (directly on an instrument guard)
63 — the Socket of the on-board computer
64 — the Socket of an instrument guard 2
65 — the Instrument guard
66 — the Plug - back section to an instrument guard
67 — the Plug - a wire of the digital watch to an instrument guard
68 — the Plug - an additional wire to a heater wire
69 — the Plug - a heater wire to a wire of the fuel pump
70 — the heater Socket
71 — Additional resistance in a heater
72 — the Thermoswitch (a heater for the parking)
73 — the heater Motor
74 — the overheat Sensor (a heater for the parking)
75 — the heater Plug to a heater for the parking
76 — the Heater
77 — the Fuel pump
78 — the Plug - the on-board computer to remote control
79 — the Plug - management of loudness depending on speed
80 — the Plug - a wire of a control system of speed
81 — the fuel reserve Transmitter
82 — the speed Transmitter
83 — the Plug - a wire of the digital watch to the digital watch (4 contacts)
84 — the Plug - a wire of the digital watch to the digital watch (2 contacts)
85 — the Digital watch

Schematic diagram of typical system of a washer of a head headlight

1 — the Control unit of screen wipers of head headlights
2 — the Safety lock - night-time lighting, back and parking lamps
3 — the Safety lock - horns, the control unit of a screen wiper/washer and screen wipers of a head headlight
4 — the Motor - windshield screen wipers
5 — the Switch of screen wipers
6 — the Pump - system of screen wipers of head headlights
7 — the Pump - supply of the clearing liquid
8 — the Pump - system of a washer of a windshield
9 — the Plug - a wire of a screen wiper of a head headlight to forward section 1 (the washer liquid supply pump)

10 — the Plug - a wire of a screen wiper of a head headlight to forward section 2 (the plug of screen wipers of a head headlight)
11 — the Plug - the central section to forward section (7 contacts)
12 — the screen wiper motor Plug
13 — the Plug - the central section to the screen wiper switch
14 — the Motor - windshield screen wipers
15 — the Motor - a screen wiper of the left head headlight
16 — the Control unit of the washer/screen wiper breaker

The schematic diagram of typical system of window regulators with the electric drive

1 — the Plug of back section to the driver's door (6 contacts)
2 — the Plug of back section to the central section (27 contacts)
3 — the Plug of a wire of management of a window regulator and the central blocking to the driver's door (13 contacts)
4 — the Plug of a wire of management of a window regulator and the central blocking to the plug for connection of the special equipment
5 — the Switch of a back left window regulator
6 — the Switch of a back left window regulator
7 — the Switch of a back right window regulator
8 — the Plug of a wire of the left back door to the motor of the left back window regulator
9 — the Plug of a wire of the right back door to the motor of the right back window regulator
10 — the Motor of the left back window regulator
11 — the Motor of the right back window regulator
12 — the Plug of a wire of management of a window regulator and the central blocking to the left back door

13 — the Plug of a wire of management of a window regulator and the central blocking to the right back door (7 contacts)
14 — the Sensor of safety of food
15 — the Sensor of children's safety
16 — the Motor of a forward left window regulator
17 — the Motor of a forward right window regulator
18 — the Plug of a wire of a door of the driver to the motor of a forward left door
19 — the Plug of a wire of a door of the passenger to the motor of a window regulator of a passenger door
20 — the Relay
21 — the Plug of a wire of management of a window regulator and the central blocking to the passenger's door (13 contacts)
22 — the Switch of a forward left window regulator
23 — the Switch of a back right window regulator
24 — the Switch of a forward right window regulator

Schematic diagram of system of a heater and conditioner

1 — Illumination of monitors a heater
2 — the Light-emitting diode 3
3 — the Light-emitting diode 2
4 — the Light-emitting diode 1
5 — the Switch of the supercharger of the heater/evaporator
6 — the Plug - control run by a heater to the central conducting (13 contacts)
7 — the Plug - section of forward conducting to monitors a heater
8 — the Safety lock - the supercharger of a heater
9 — the Safety lock - the additional fan a stage 2
10 — the Safety lock - an alarm lamp, backing signal lamps, a tachometer and mirrors (the food distributor)
11 — the Temperature switch of 91 °C - a stage 1
12 — the Temperature switch of 99 °C - a stage 2
13 — the conditioner Switch
14 — the Water valve
15 — the evaporator temperature Regulator
16 — the Control unit of the conditioner (monitors a heater)
17 — the Plug - the motor of the additional fan (on the motor of the additional fan)

18 — the Relay - the additional fan a stage 2 (on the food distributor)
19 — the Relay - the additional fan a stage 1 (on the food distributor)
20 — the Switch - прессостат high pressure (dryer)
21 — the Switch - temperature is 110 °C (only for 524 td)
22 — the Motor of the supercharger of a heater
23 — the Motor of the supercharger of the evaporator
24 — the Plug - прессостат high pressure to the electromagnetic coupling
25 — the evaporator temperature Sensor (in the evaporator)
26 — the heater temperature Sensor (in a heater)
27 — the Sensor of internal temperature (the lower left panel of a covering)
28 — the Electromagnetic coupling for the compressor
29 — the Motor of the additional fan

The schematic diagram of seats with heating

1 — Podogrev - a passenger seat
2 — the Socket of heating of a seat - the party of the passenger
3 — the Switch of heating of a seat - the party of the passenger
4 — the Plug of a wire of heating of a seat (the party of the driver) to the plug for connection of the special equipment (58K)
5 — the Plug of a wire of heating of a seat (the party of the driver) to the party of the passenger

6 — the Plug of a wire of heating of a seat (the party of the driver) to the plug for connection of the special equipment (15E and 30SA4)
7 — the Relay of heating of seats
8 — the Switch of heating of seats - the party of the driver
9 — Podogrev - the driver's seat
10 — the Socket of heating of a seat - the party of the driver

The schematic diagram of electrodriving seats with memory (1 of 2)

1 — Shtekerny connection for connection of the special equipment
2 — Shtekerny connection of a wire of a passenger seat
3 — Shtekerny connection of a wire of the control unit of seats with memory
4 — Connection of a wire of the control unit of seats with memory
5 — the Switch of management of seats
6 — the Seatback
7 — the Mechanism of horizontal adjustment of a seat

8 — the Head restraint
9 — Height of a front seat
10 — Height of a back seat
11 — Shtekerny connection of management of a seat back / horizontal adjustment of a seat
12 — Shtekerny connection of management of a head restraint
13 — Shtekerny connection of management of height of seats
14 — the Electronic control unit (under a seat)
15 — Shtekerny connection of a wire of the control unit of seats with memory

The schematic diagram of electrodriving seats with memory (2 of 2)

16 — Shtekerny connection of a wire of a seat with memory
17 — Shtekerny connection of the drive of management of a seat
18 — Shtekerny connection of the switch of memory
19 — Shtekerny connection of a potentiometer of horizontal adjustment of a seat
20 — Shtekerny connection of a potentiometer of height of a front seat
21 — Shtekerny connection of a potentiometer of height of a back seat
22 — Shtekerny connection of the motor of a head restraint
23 — Shtekerny connection of a potentiometer of a seatback

24 — Shtekerny connection of the motor of a seatback
25 — the memory Switch
26 — the Motor - management of a seatback
27 — the Motor - management of a head restraint
28 — the Motor - management of height of a back seat
29 — the Motor - management of height of a front seat
30 — the Motor - horizontal adjustment of seats

The typical schematic diagram of electrodriving seats without memory

1 — Shtekerny connection for connection of the special equipment
2 — the Seatback
3 — the Seat forward/back
4 — the Head restraint
5 — the Front seat up/down
6 — the Back seat up/down
7 — the Plug - the switch of management of a back/seat
8 — the Plug - the switch of management of a head restraint
9 — the Plug - the switch of management of rise/lowering of front/back seats
10 — the Switch of the electric drive of seats
11 — the Plug - a wire of an electrodriving seat to an electronic control unit
12 — the Electronic control unit the electric drive of seats
13 — the Plug - the drive of an electrodriving seat to an electronic control unit

14 — the Plug - a wire of the electric drive of a seatback and a head restraint to an electronic control unit electrodriving seats
15 — the Plug - a wire of the electric drive of a seatback and a head restraint to the back motor
16 — the Plug - a wire of the electric drive of a seatback and a head restraint to the head restraint motor
17 — the Plug - a wire of an electrodriving seat on the party of the driver to a wire on the party of the passenger
18 — the Motor - a front seat up/down
19 — the Motor - a back seat up/down
20 — the Motor - a seat forward/back
21 — the seatback Motor
22 — the head restraint Motor

The typical schematic diagram of the radio receiver - it is shown for early models

1 — the Loudspeaker on the right door
2 — the Loudspeaker forward right
3 — the Loudspeaker back right
4 — the Plug for connection of the special equipment RA12
5 — the Socket of window regulators
6 — the Amplifier
7 — the Loudspeaker forward left

8 — the Loudspeaker on the left door
9 — I Will corrode food wires
10 — the Socket of power supply of the antenna
11 — the Radio receiver
12 — Management of balance of loudspeakers
13 — the Loudspeaker back left

Schematic diagram of the typical L-Jetronic system

1 — the Battery
2 — the ignition Distributor
3 — the ignition Coil
4 — the Sensor of provisions
5 — Spark plugs
6 — the Generator
7 — the Starter
8 — the oil pressure Sensor
9 — the Temperature transmitter
10 — the Sensor of temperature of cooling liquid
11 — the Control unit of fuel injection
12 — I Will corrode conductings
13 — the Switch of a butterfly valve

14 — the air consumption Sensor
15 — fuel Injectors
16 — the Relay of the fuel pump
17 — the ignition Module
[1 — the engine Socket
2 — the Fuel pump
3 — oil Pressure
4 — temperature Measuring instrument
5 — Pnevmopodushka
6 — Napomin. about servicing term
7 — the Test socket
8 — the Screen
9 — the Strong tension]