E39 series BMW 5

since 1996-2001 of release

Repair and car operation


E39 BMW
+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
- Engine electric equipment
   - Ignition system
      Security measures at work with ignition system
      Removal and installation of the coil of ignition
      Removal and installation of the sensor of a detonation
      Check and replacement of the sensor of impulses
      Removal and installation of the tip of a spark plug
      Removal and DME control unit installation
      Spark plugs
   + System of preheat of the diesel engine
   + charge and start Systems
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes
+ System of onboard diagnostics


Security measures at work with ignition system

In electronic system of ignition tension reaches 40 quarter. Under adverse conditions, for example, humidity in an impellent compartment, throws of tension can punch isolation that in turn can lead to electric blow.

For an exception of a travmirovaniye of people and/or damage of electronic system of ignition it is necessary to observe the following security measures:

      •  To wash the engine it is necessary only after its switching off.

      •  By production of welding works it is necessary to disconnect all cables of the storage battery.

      •  It is not necessary to switch off the generator and a starter at the working engine.

At compression check surely disconnect the main relay (1) DME to exclude operation of the coil of ignition. (2-DME safety locks). Address to an accompanying illustration. Check a compression, address to the Section compression Check.

      •  Wires of system of ignition are necessary for disconnecting only at the switched-off ignition.

      •  Connection and shutdown of wires of measuring devices (an ignition tachometer/tester) is necessary for making only at the switched-off ignition.

      •  Primary party (the party of a high voltage, the party of spark plugs) systems of ignition should be loaded with resistance of at least 4 kiloohms. Tips of spark plugs should be attached.

      •  By no means it is impossible to start the engine at disconnected from the ignition coil a cable (plug 4).

      •  It is not necessary to attach to the plug 1 (-) ignition coils the pomekhopodavlyayushchy condenser and a control lamp.

      •  It is not necessary to connect the plug of 1 coil of ignition to weight or the storage battery. At the subsequent installation of the anticreeping alarm system it is impossible to use a wire to the plug 1 for start-up blocking.

      •  It is impossible to start the engine right after heating to temperature more + 80°С (for example, when painting, processing by steam).

      •  It is not necessary to carry out works with electronic system of ignition to the persons having a warm stimulator.