E39 series BMW 5

since 1996-2001 of release

Repair and car operation

+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
- Power supply system and release
   + Power supply system
   - System of injection of the petrol engine
      Memory of malfunctions
      Security measures and rules of observance of purity at work with injection system
      Work of system of injection
      Check of systems of ignition and injection
      Adjustment of a drive of gas
      Removal and installation of a branch pipe of a butterfly valve
      Removal, check and installation of the valve of adjustment of idling
      Check, removal and installation of the sensor of temperature
      Check of injectors
      Removal and installation of injectors
   + Power supply system of the diesel engine
   + System of production of the fulfilled gases
+ engine Electric equipment
+ 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

Memory of malfunctions

The control unit reveals malfunctions in injection and ignition system, such as, failure of sensors, a detachment of tips or a leakage of contacts. The specified malfunctions are registered at once in memory. At the same time on the dashboard the control lamp lights up, specifying that malfunction is written down in memory. If malfunction appears only once, for example at bad contact, the control lamp dies away again, but malfunction registers in memory. The data indicating frequency of emergence of malfunctions Besides, register. HUNDRED BMW firms by means of the control device attached to the tip of diagnostics (on the right in an impellent compartment), read out malfunctions and eliminate them.

If the engine or system of injection work is faulty, it is recommended to consider first of all data from the block of memory of malfunctions. The list of malfunctions can print HUNDRED. For this purpose the reading-out electronic device joins the car.

All DME options have emergency operation of work: if the sensor fails, the control unit continues work, using average value of controllable parameter of the corresponding sensor. At failure of a measuring instrument of weight of air the control unit for measurement of supply of fuel as the base accepts data of sensors of provision of a butterfly valve and number of turns of the engine. This option of management joins automatically and is not displayed on the dashboard. Movement proceeds, dynamic characteristics worsen a little, but is imperceptible for the driver. Malfunction is registered the control unit. Therefore it is recommended periodically, for example at control of composition of the fulfilled gases, to read out contents of memory of malfunctions even if outwardly defect is not shown.

At shutdown of the storage battery or as a result of undocking of shtekerny connection at the control unit all malfunctions in memory are erased.