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
   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
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes

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General information and security measures

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

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

a) Be careful - 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 time отдавания / tightenings of a clip of the plug.