Mercedes M-Class W163

since 1997 release

Repair and operation of the car



Mercedes W163
+ Mercedes-Benz cars of a class M (W163)
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
+ Cooling systems, heating and air conditioner
+ Power supply system and production of the fulfilled gases
- Systems of electric equipment of the engine
   - Systems of ignition and engine management
      Main data and security measures
      Checks of a control system of ignition and injection
      Search of malfunctions - the general information and preliminary checks
      Check and adjustment of a corner of an advancing of ignition
      Spark plugs
      Removal and installation of coils of ignition, - petrol models
      Removal and installation of the sensor of provision of a bent shaft (CKP)
      Removal and installation of the sensor of position of the camshaft (CMP), - the series 111 engine
      Removal and installation of the sensor of Hall of the camshaft, - petrol engines of series 112, 113 and diesel engines of a series 612
      Removal and installation of sensors of a detonation (KS), - petrol engines
   + System of preheat of the diesel engine
   + Diagnostics of systems of electronic control and diagnostic equipment
   + Systems of a charge and start
+ Manual box of gear shifting
+ Automatic transmission
+ Transmission line
+ Brake and auxiliary systems
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



Systems of ignition and engine management

Main data and security measures

The system of ignition provides ignition of the air-fuel mix given to combustion chambers of cylinders. For formation of a spark of the required intensity the 12-volt tension of onboard power supply in will be transformed ignition coils to high-voltage (VV), - 30 000 Century.

The electronic system of direct ignition is an integral part of a control system of the engine. The main working components of system of ignition are candles and coils of ignition.

Distribution of giving of VV of tension to spark plugs on candles the block of electronic control (ECM) operates.

External adjustment of the moment of ignition is not made, - at violation of the required installations it is necessary to make replacement of the failed components.

Elements of management of system of ignition are not subject to wear and do not need regular service. According to the Schedule of maintenance (see the Head of the Power supply system and production of the fulfilled gases) it is necessary to make only replacement of spark plugs.

Security measures during the work with systems of ignition and management of fuel injection

For the purpose of prevention of traumatizing personnel and/or failure of components of systems of ignition/management of injection it is necessary to observe the following:

  • Do not touch an electrical wiring of system of ignition and do not disunite its contact sockets at the working engine / the rotating starter;
  • You make detachment/connection of fuel-supply lines of a control system of an injection/electrical wiring of system of ignition, and also connection/shutdown of any diagnostic and measuring equipment only at the switched-off ignition;
  • Do not allow to performance of work on service by electronic system of ignition of people with the implanted pacemaker;
  • Do not allow short circuit on the mass of plugs No. 1 of coils of ignition;
  • Do not connect a control lamp to plugs No. 1 of coils of ignition.