BMW 5 Series E39

since 1996-2001 release

Repair and operation of the car



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




Removal and installation of the coil of ignition

Coils of ignition can be checked by an ohmmeter. However an exact inspection has to is carried out by means of an oscillograph in the conditions of auto repair shops. Such check allows to establish the reasons of malfunctions in system of ignition.

 REMOVAL

1. Switch off ignition.

2. Remove caps of bolts of fastening and turn off two bolts.

3. Uncover a slippery jack and a cover of a head of cylinders.

4. Disconnect plugs from each candle. For this purpose pull upward a metal stopper.

5. Turn off two bolts of fastening at each coil of ignition. Take out coils.

Pay attention to a plate of mass of a cover of a head of cylinders at cylinders 1 and 6.

6. Pay attention to a plate of mass of the mine of a cable between cylinders 2 and 3 if a cover of a head of cylinders metal. If a cover plastic, pay attention to a cable of weight (1) at a connecting plate (2), address an illustration. Cables at assembly have to be laid on the former places.


 CHECK

1. On an illustration the plug of one of ignition coils is shown.
Attach an ohmmeter between plugs 1 and 15 and measure resistance of primary winding. It has to make about 0.8 Ohms.

Resistance of a secondary winding (between connection of a spark plug, plug 4 and connection of weight) is not measured.

2. Replace plugs of spark plugs, address the Section Removal and installation of the plug of a spark plug.


INSTALLATION

1. Insert ignition coils with plugs and record metal clips.
2. Establish facing of a head of cylinders. Put covers of butterdishes.









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