Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
- 7. Ignition system
   7.2. Safety precautions at repair of electronic system of ignition
   7.3. Ignition coils
   + 7.4. Spark plugs
   - 7.5. The device of a preliminary warming up of a diesel engine
      + 7.5.1. Check of the device of a preliminary warming up
      7.5.2. Device self-diagnostics
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes

7.5.2. Device self-diagnostics

The power supply system of a diesel engine regulated by means of electronics (EVE, ERE) spends the diagnosis independently, and the found out malfunctions accumulates in memory of malfunctions. If there comes serious malfunction flashes ЕДС – a signalling device on the instrument panel. (ЕДС – the Electronic control of a diesel engine). In firm Mercedes repair truck it is possible to interrogate malfunctions by means of the reading out device and purposefully them to eliminate. Malfunction not necessarily arises because of bad road performance of the car. Therefore it is expedient to interrogate the saved up malfunctions through certain intervals of run.

Contents of memory of malfunctions remain even at switching-off of the storage battery. Saved up malfunctions automatically are erased, if they are not observed any more during approximately 20 trips following one after another. Malfunctions which were remembered by the device, can be extinguished manually by means of the device for reading of malfunctions.