E46 series BMW 3

since 1998 of release

Repair and car operation

E46 series BMW 3
+ BMW 3 Cars (E46)
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ engine Electric equipment
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   + Dignostika of electric elements
   + Lighting and alarm system
   - Devices and equipment
      Monitors - the main data
      Removal and installation of a control panel
      Removal and installation of the index of the turn/switch of a screen wiper
      Removal and installation of facing of a steering column
      Removal and installation of the switch of light
      Removal and installation of switches: seat heating / sun-protection curtain/system Hi-Fi/antiprobuksovochna of ASR system
      Removal and installation of switches: alarm system, uniform lock, window regulators
      Removal and radio receiver installation
      Removal and loudspeaker installation
      Removal and installation of electric motors/draughts of a screen wiper
      Check of the pump of a stekloomyvatel
      Explanatory remarks to schemes of electric connections
+ electric equipment Schemes


Explanatory remarks to schemes of electric connections

The schemes of electric connections provided further are made by a schematic principle when components of each contour communicate among themselves on the shortest way without a form of laying of electroconducting round located on a way of its following of components and plaits.

On BMW cars the single-wire scheme of turning on of devices of electric equipment is applied. With plus of power supplies consumers incorporate a wire, and to a minus – through a body of the car or on weight. Such method allows to reduce number of wires and to simplify their installation. Connection with mass of a minus of power supplies reduces electrochemical corrosion of metal details of a body. In certain cases it is not enough direct connection of the electric consumer with weight, and the consumer incorporates to weight an additional wire of usually brown color.

The supply voltage is brought to the majority of consumers via the ignition switch. Power-supply circuits of those knots of the electric equipment which work can be demanded in any circumstances, are always connected to the storage battery, irrespective of the provision of a key in the ignition lock.
For connection of wires electric sockets with flat contacts are used.

For a normal food of consumers the electric chain should be closed, otherwise in be present an electric current, for example, if to the electric motor of a screen wiper positive tension moves, it will not work until its electric chain will not be connected to weight. In an electric chain switches, the relay, safety locks, measuring devices, electric motors and other consumers of the electric power can be connected. For the correct connection of consumers of the electric power contacts of electric sockets have the corresponding markings. Connection with mass of the car is carried out or is direct via the case of the consumer of the electric power or an additional wire.

Contact 30

On this contact always there is a positive tension of the accumulator. The wires connected to this contact, have red or red color with a strip.

Contact 31

Contact incorporates to mass of the car a wire of brown color.

Contact 15

On this contact positive tension after ignition inclusion moves. The wires connected to this contact, have green or green color with a strip.

Contact X

On contact tension after ignition inclusion moves, however at starter inclusion tension is disconnected. It gives the chance to disconnect at start of the engine consumers of the electric power unnecessary at this moment. Headlights of a driving beam receive a food also from this contact therefore at the included driving beam and switching off of ignition there is an automatic switching on marker lights.

Colors of wires are designated by Latin letters.

If in color designation проводаимеется some letters divided by a sign/, the left group of letters points to primary color of a wire, and right – on color of a strip.

On the scheme all consumers of a current and switches are represented in neutral situation.

Designations of flowers of isolation электропроводки*


The black


The dark blue


The brown

GRY The gray
GRN The green
LT Light (shade)
NCA It is not defined
ORG The orange
PNK The pink
PPL The purple
RED The red
TAN The golden
VIO The violet
WHT The white
YEL The yellow
For example: BRN/VIO OR GRY/BRN — Brown with the Violet strip or Grey with the Brown strip