S-class W202 Mercedes

1993-2000 of release

Repair and car operation

W202 Mercedes
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
- 8. Fuel system
   + 8.1.1. Introduction
   - 8.2. System of injection of petrol engines Principle of work of PMS Principle of work of HFM
      8.2.2. Self-diagnosing of a condition of system of ignition and fuel injection
      8.2.3. Air flowmeter
      8.2.4. A temperature-sensitive element of cooling liquid
      8.2.5. The sensor of soaked-up air
      8.2.6. System of vacuum pipelines
      8.2.7. The fuel distributor with klapanny nozzles
      8.2.8. Klapannye of a nozzle
      8.2.9. Oxygen sensor (lambda probe)
      8.2.10. Diagnostics of malfunctions of system of injection of gasoline
      8.2.11. That it is necessary to know to the owner of the car with the injector engine
      8.2.12. Turbo doctor
   + 8.3. System of injection and food of diesel engines
   + 8.4. System of production of exhaust gases
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes

b47c026d b47c026d

8.2.2. Self-diagnosing of a condition of system of ignition and fuel injection


In the presence of HFM-and PMS control systems any more it is not required to regulate frequency of rotation of a shaft of the engine in a mode of idling and the maintenance of an oxide of carbon. The system itself supervises itself and accumulates the revealed malfunctions in memory. The repair truck of Mercedes firm can define malfunctions by means of the slot and purposefully eliminate them. One malfunction not necessarily considerably comes to light because of deterioration of road performance of the car. Therefore it is expedient after passing by the car of a certain distance to visit a service repair truck.

Contents of memory of malfunctions remain even at shutdown of the storage battery. The malfunctions written down in memory automatically are erased in case during about 20 trips following one after another they are not shown any more. The malfunctions written down in memory can be manually erased by means of the device of reading of malfunctions.

At carrying out repair work in system of injection of fuel it is necessary to observe rules of maintenance of purity concerning a power supply system and to follow the instruction according to safety measures concerning ignition system.