BMW 3 series E46

Since 1998 of release

Repair and car operation

The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
- Engine electric equipment
   The general information and security measures
   + System of electronic control by ignition and injection of the petrol engine
   + Ignition system
   + System of preheat of the diesel engine
   + Charge and start systems
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes


The general information and security measures

The structure of an electric equipment of the engine includes all components of systems of ignition - as parts of an electronic digital control system of engine DME/BOSCH-MOTRONIC (petrol engines), preheat (diesel engines), start and a charge. In a kind of that on the functional purpose these components concern to directly ensuring functioning of the engine, they are considered separately from components of an onboard electric equipment, such as lighting devices, monitors, etc.

At work with an electric equipment it is necessary to observe certain security measures:

a) Be cautious - electrodevices especially easily fail at maloperation with them during check, connection and service.
b) do not leave ignition for a long time included at the switched off engine.
c) do not concern and do not disconnect an ignition wire at the working engine or at the included starter (petrol engines).
d) People with a warm stimulator should not work with electronic system of ignition (petrol engines).
e) Never disconnect wires from the battery at the working engine.
f) At connection of wires from the auxiliary power supply at emergency start of the engine observe polarity.
g) Always disconnect a negative wire from the battery the first and connect the last in order to avoid short circuit at a casual contact the tool during an otdavanija/tightening of a clip of the plug.