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
+ 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

7.2. Safety precautions at repair of electronic system of ignition

At electronic systems of ignition secondary pressure makes to 30 sq. Under adverse circumstances, for example, at the raised humidity in a motor compartment, pressure peaks can punch isolation. If in this case adjoin to details of system of ignition it can lead to an electroshock.

To avoid травмирования the persons spending these works, and / or damage of electronic system of ignition, at carrying out of repair work in cars with such system it is necessary to pay attention to underwritten rules.

At the working engine or at its start do not concern with hands of a wire of a high voltage and do not pull together with his hands.

Only at the disconnected ignition disconnect from plugs of a wire of system of ignition, in particular multicontact штеккер the regulating device of the engine.

Each electric chain of a high voltage should be loaded by the resistor having resistance not less 2 clod, i.e. At ignition inclusion contact tips of spark plugs should be built in.

Only at the disconnected ignition attach and disconnect from plugs of wires measuring devices (a tachometre / the device for check of system of ignition).

On plugs 1 (–) and 15 (+) ignition coils it is impossible to connect a control bulb.

If at car servicing carrying out of test of flammable sparks it is necessary to do it only with spark plug use directly in the cylinder is required. Thus provide good contact of a spark plug to the car case. A contact tip of a spark plug or a high voltage wire hold not a hand, and well isolated pincers in relation to the car case (for example, to the block of cylinders of the engine).

Before definition of frequency of rotation of a starter check up pressure of compression, switch off ignition and remove штеккер () on the HFM-regulating device or the item gauge of a cranked shaft (L5) on the PMS-regulating device.

Connecting elements of a primary chain spend pressure to 400 Volt! Therefore always it is necessary to connect clips / a package of the core to the car case.

At electro- and spot welding disconnect from the plug of the storage battery an electric onboard network.

Wash the engine only at the switched off ignition.

Persons with a heart electrostimulator cannot work with electronic system of ignition.