BMW 5 Series Owners & Service Manuals

BMW 5 Series: Crankcase monitoring

On-board diagnosis

Crankcase monitoring
Feed-in point of the blow-by gases to the clean air line upstream from the exhaust turbocharger

  1. Non-return valve
  2. Connection to exhaust turbocharger
  3. Captive screws
  4. Crankcase bleeding connection
  5. Tank ventilation connection
  6. Connection to clean air line
  7. Aluminum heating pipe
  8. Electrical connection of heating element

Owing to the stricter legislation in the USA, the engines for the US market have an OBD concept "pressure sensor". With a differential pressure sensor in the tank ventilation system and the hot film air mass meter, leaks in the crankcase ventilation, tank ventilation, as well as the blow-by lines can be identified. Via a feed-in point at the exhaust turbocharger the blow-by gases are fed back into the clean air line of the air intake system.


     Exhaust turbocharger

    B58TU exhaust turbocharger Exhaust turbocharger in the B58TU engine Exhaust turbocharger made of steel, for cylinder head-integrated exhaust manifold ZIAK¹ Exhaust turbocharger made of steel, f

     Fuel System

    Fuel preparation The fuel preparation has been modified to meet the requirements of emission legislation. The high pressure pump and the injectors have been revised and designed for a fuel injection

     Direct rail

    Mounting the injectors Mounting bolts Plastic sleeve Holding clamp with bayonet fitting Rail Solenoid valve injector Cast lug The solenoid valve injectors are fastened to the holding clamp w


     Operating temperature

    The positions of the rotary valve at engine operating temperature are shown by area C of the circuit diagram. Operating temperature, Bx8TU engine The graphic shows control with the engine at operating temperature. The position of the rotary valve means that the cross-sections of the respective c

     System overview

    The electronic tire pressure label is an extension to the vehicle software. No additional components are required for the integration of this new function. All the information is supplied by sensors that are already built into the vehicle. System overview of the electronic tire pressure label in

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