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
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
- 14. An electric equipment
   14.1.2. Measuring devices
   14.1.3. Technics of measurements
   14.1.4. Electric equipment checks
   14.1.5. A sound signal
   14.1.6. Replacements of safety locks
   + 14.1.7. The storage battery
   + 14.1.8. The generator
   - 14.1.9. A starter
      14.1.9.1. Diagnostics of malfunctions of a starter
   14.1.10. The traction relay
   + 14.1.11. Illumination system
   14.1.12. Devices
   14.1.13. The instrument panel
   14.1.14. Lamps накаливания on the panel of devices
   14.1.15. Light switch
   14.1.16. A radio receiver
   + 14.1.17. The aerial
   14.1.18. Dynamics
   + 14.1.19. Rubber brushes of screen wipers
   14.1.20. Jets стеклоомывателя
   14.1.21. Washing atomizers of headlights
   14.1.22. A screen wiper and its engine
   14.1.23. Protect the car
   14.1.24. Anticreeping "immunodeficiency"
   14.1.25. Why headlights grow dull
   14.1.26. "Галогенки"
+ 14.2. Electroschemes







14.1.9.1. Diagnostics of malfunctions of a starter
THE GENERAL DATA

If the starter is not turned, first of all, check up, whether there are on the plug 50 traction relays pressure necessary for retraction – not less 8В. If the specified pressure arrives, it is necessary to check up under the electroscheme of a line which concern an electric chain of a starter. Whether the starter in the presence of full pressure of the storage battery is involved, it is possible to check up as follows:

 – Do not include any transfer, include ignition;
 – зашунтируйте a wire (cross-section section not less than 4 мм2) plugs 30 and 50 on a starter, see also the electroscheme the Electric equipment – a starter, the generator, the accumulator (a DB 111 HFM/PMS).

If thus the starter is normally started, malfunction consists in the wires going to a starter. In this case check up a starter in the removed condition.

Check condition: it is necessary to screw down connections, and they should not be oxidised.

THE REASON
WAY OF ELIMINATION
The starter does not rotate at actuating of the switch of ignition and a starter
The storage battery is discharged Charge the storage battery.
The line 50 going to the switch of ignition and a starter is broken off, the starter switch is faulty Eliminate rupture, replace faulty details.
The wire or connection on the case is broken off; the storage battery is discharged Check up wires of the storage battery and connection, measure pressure of the storage battery, if necessary charge it.
Insufficient passage of a current owing to the loosened or oxidised connections Clear poles and plugs of the storage battery.
There is no pressure on the plug 50 (the traction relay) Restore the connections protected by safety locks between the storage battery, a starter and the car case.
The starter rotates too slowly and does not start the engine
The storage battery is discharged Charge the storage battery.
In the engine there is no winter motor or all-weather oil Fill in all-weather oil.
Insufficient passage of a current owing to the weakened or oxidised connections Clear poles and plugs of the storage battery and clear connections on a starter, hardly tighten connections.
Coal brushes do not adjoin to a collector, plugs in the contact surfaces are worn out, broken off, made oily or polluted Check up, clear or replace coal brushes, check up contact surfaces.
Insufficient interval between coal brushes and a collector Replace coal brushes and clear contact surfaces of coal brushes.
The collector is scratched or has scorched and is polluted Grind a collector or replace an anchor.
On the plug 50 there is no pressure (a minimum 8) Check up the ignition and starter switch or the traction relay.
The traction relay is faulty Replace the traction relay.
The starter is started and involved, the engine shaft does not rotate or rotates only pushes
Transfer is faulty шестеренчатая Replace шестеренчатую transfer.
The gear wheel is polluted Clear a gear wheel.
The gear rim on a flywheel is faulty Finish a gear rim if it is required, replace a flywheel.
Transfer does not work шестеренчатая
Transfer or abrupt carving are polluted or faulty шестеренчатая Clear шестеренчатую transfer, if necessary replace it.
The traction relay is faulty Replace the traction relay.
The returnable spring is weakened or broken off Restore a returnable spring.
The starter continues to work after the ignition key has been switched off
The traction relay hangs, is not disconnected Immediately switch off ignition, replace the traction relay.
The lock-switch of ignition and devices is not disconnected Immediately disconnect wires from plugs of the storage battery, replace the lock-switch of ignition and devices