Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car



Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling systems, heating
+ Power supply system and release
- Engine electric equipment
   - Systems of ignition and engine management - the general information
      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
      Self-diagnostics of systems of electronic control of OBD
      Diagnostics of electronic system of the automatic air conditioner (AC)
      Application of an oscillograph for observation of signals of a control system
      Ignition coils - installation details
      Removal, installation and adjustment of the sensor of position of the camshaft (CMP)
      The distributor of ignition (M119.97 engines) - installation details
   + Systems of a charge and start
+ Gear shifting box
+ Automatic transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment






Systems of ignition and engine management - the general information

Basic elements of system of microprocessor management

Schemes of vacuum connections and an arrangement of basic elements of control systems are submitted on illustrations to the Sections Power supply system and injection of fuel of the petrol engine - the general information and System of injection of fuel of the diesel engine - the general information of the Head of the Power supply system and release.

On all models, except models, except 8-cylinder, equipped with the M119.97 engine the electronic system of direct ignition without distributor under control of ECM, based on indications of the sensor of position of the camshaft (CMP) is used.