Schematic electric circuits. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








19-principialnye-ehlektricheskie-skhemy.html

19. Schematic electric circuits

General information  

As it is impossible to provide in this Management all schematic diagrams for every year of release, the most typical schemes below are provided and what happen are necessary more often.

Before beginning troubleshooting in any chain, check safety locks and chain breakers (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. 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 The black
BL The dark blue
BR It is brown.
GE The yellow
GN The green
GR Gray or green
GY The gray
OR The orange
PK The pink
R The red
RS The pink
RT The red
SW The black
TN Yellow коричн.
V The violet
VI The violet
W The white
WS The white
Y The yellow

Typical alarm lamps of a starter, charging of the battery, horn, 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 Switch of a signal of a backing
W1 — the Tyre of the distributor of a food
[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 - a 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 back lamps/illuminations 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 lamp of illumination of salon
2 — the Right lamp of illumination of salon
3 — the Left headlight of a driving beam
4 — the Right headlight of a driving beam
5 — the Left headlight near light
6 — the Right headlight near light
7 — the Left forward fog light
8 — the Right forward fog light
9 — ashtray Illumination (behind)
10 — the Relay of a headlight of a driving beam
11 — the Relay of a headlight of a 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 - a passing beam of headlights 1
15 — the Relay of switching distant - a passing beam of headlights 2
16 — Resistance of switching distant - a passing beam of headlights 1
17 — Resistance of switching distant - a passing beam of headlights 2
18 — the blinking Switch a 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 a 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 Tyre of the distributor of a food
[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 back lamps/illuminations of registration plate (see 3 of 4)]

The typical monitoring system, mirrors with the electric drive, a stoplight and a lay 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 lay lamp
5 — the Left lay 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 lay lamp 1
13 — the Switch of a lay lamp 2
14 — the Switch of a back lamp and illumination of registration plate
15 — the stoplight Switch
16 — the Sensor of level of liquid in the washer tank

17 — the Sensor of level of cooling liquid
18 — the Sensor of level of oil
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 Tyre of the distributor of a food
[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 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 liquid
4 — the Sensor of pressure of oil
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 Tyre of the distributor of a food

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 liquid
c — 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\Measuring instrument of level of fuel
j — the Tachometer
k — Management of saving mode
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 a 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 back lamps/illuminations 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 - engine conducting
8 — the Socket, the main conducting - engine conducting
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 Motronic engine

1 — the Block of electronic control (ECU)
2 — the speed control Relay
3 — the temperature Sensor
4 — the Conditioner
5 — I Will corrode car conductings
6 — the butterfly valve Switch
7 — the Sensor of a consumption of air
8 — the Sensor of speed
9 — the synchronization Sensor
10 — the Relay 1
11 — Rele2
12 — the Sensor of pressure of oil
13 — the temperature Transmitter
14 — I Will corrode checks
15 — the engine Tip
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 Tip 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 — Pressure of oil
29 — a temperature Measuring instrument
30 — the Electric fuel pump
31 — the Reminder on approach of term of planned maintenance
32 — the drive Motor
33 — the temperature Sensor

Schematic diagram of a typical control system in the speed

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

12 — the Switch of a steering column
13 — Shtekerny I will corrode - back section to the central section (29 contacts)
14 — the stoplight Switch
15 — Shtekerny the 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 board computer, an additional heater and a digital watch (1 of 2)

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

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

1 — the Tip - back section to the central section
2 — the tip 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 Tip - conducting of a door of the driver to back section
6 — the Tip - a connecting wire of system of the central blocking to conducting of a door of the driver (13 contacts)
7 — the Tip - a connecting wire of the central blocking to door conducting from the passenger
8 — the Tip - a wire of system of the central blocking at doors of the driver to the switch
9 — the Switch of the central blocking / разблокирующий the lock mechanism (a door of the driver, on the lock)
10 — Connection of the motor of the central blocking with a door of the driver (6 contacts)
11 — the Motor of the central blocking - a door of the driver
12 — the Tip - conducting of a door of the passenger to the microswitch
13 — Mikrovyklyuchatel (a door of the passenger, on the lock)
14 — the Motor of the central blocking - a door of the passenger
15 — the Motor of the central blocking - a door of the passenger
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 a fuel tank (6 contacts)
19 — the Motor of the central blocking - a cover of a bulk opening of a 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 Tip - a connecting wire of the central blocking to the right back door (7 contacts)
24 — the Tip - 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 the electronic control unit system of protection against theft (26 contacts)
29 — the Socket of the block of the relay (4 contacts)
30 — the Socket of the electronic control unit system of protection against theft (4 contacts)
31 — the Tip 150 (in the main conducting)
32 — the Light-emitting diode of the anticreeping alarm system
33 — the Tip of illumination of a luggage carrier
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 — trunk lid Contact

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

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

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

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

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

1 — the Tip of back section to a door of the driver (6 contacts)
2 — the Tip of back section to the central section (27 contacts)
3 — the Tip of a wire of management of a window regulator and the central blocking to a door of the driver (13 contacts)
4 — the Tip of a wire of management of a window regulator and the central blocking to the tip 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 Tip of a wire of the left back door to the motor of the left back window regulator
9 — the Tip 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 Tip of a wire of management of a window regulator and the central blocking to the left back door

13 — the Tip 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 a 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 Tip of a wire of a door of the driver to the motor of a forward left door
19 — the Tip 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 Tip of a wire of management of a window regulator and the central blocking to a door of the passenger (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 by 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 Tip - a control run a heater to the central conducting (13 contacts)
7 — the Tip - 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, lamps of a signal of a backing, a tachometer and mirrors (the food distributor)
11 — the Temperature switch 91 ° With - a stage 1
12 — the Temperature switch 99 ° With - a stage 2
13 — the conditioner Switch
14 — the Water valve
15 — the Regulator of temperature of the evaporator
16 — the Control unit the conditioner (monitors a heater)
17 — the Tip - 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 a high pressure (dryer)
21 — the Switch - temperature 110 ° With (only for 524 td)
22 — the Motor of the supercharger of a heater
23 — the Motor of the supercharger of the evaporator
24 — the Tip - прессостат a high pressure to the electromagnetic coupling
25 — the Sensor of temperature of the evaporator (in the evaporator)
26 — the Sensor of temperature of a heater (in a heater)
27 — the Sensor of internal temperature (the bottom 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 — Heating - 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 Tip of a wire of heating of a seat (the party of the driver) to the tip for connection of the special equipment (58К)
5 — the Tip of a wire of heating of a seat (the party of the driver) to the party of the passenger

6 — the Tip of a wire of heating of a seat (the party of the driver) to the tip for connection of the special equipment (15Е and 30SA4)
7 — the Relay of heating of seats
8 — the Switch of heating of seats - the party of the driver
9 — Heating - a seat of the driver
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 — Shtekernoye connection for connection of the special equipment
2 — Shtekernoye connection of a wire of a passenger seat
3 — Shtekernoye connection of a wire of the control unit by seats with memory
4 — Connection of a wire of the control unit by seats with memory
5 — the Switch of management of seats
6 — a seat Back
7 — the Mechanism of horizontal adjustment of a seat

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

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

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

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

The typical schematic diagram of electrodriving seats without memory

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

14 — the Tip - a wire of the electric drive of a back of a seat and a head restraint to the electronic control unit electrodriving seats
15 — the Tip - a wire of the electric drive of a back of a seat and a head restraint to the back motor
16 — the Tip - a wire of the electric drive of a back of a seat and a head restraint to the head restraint motor
17 — the Tip - 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 forward seat up/down
19 — the Motor - a back seat up/down
20 — the Motor - a seat forward/back
21 — the Motor of a back of a seat
22 — the head restraint Motor

The typical schematic diagram of a 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 Tip for connection of the special equipment of 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 a food of the aerial
11 — the Radio receiver
12 — Management of balance of loudspeakers
13 — the Loudspeaker back left

Schematic diagram of typical system L-Jetronic

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 Sensor of pressure of oil
9 — the Temperature transmitter
10 — the Sensor of temperature of cooling liquid
11 — the Control unit fuel injection
12 — I Will corrode conductings
13 — the butterfly valve Switch

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



«on page back
18. Size table and adjusting data
on page forward»
20. Governing bodies and operation receptions