Mercedes of the S-class W202

1993-2000 of release

Repair and operation of the car

Mercedes W202
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
- 14. Electric equipment
   14.1.2. Measuring devices
   14.1.3. Technology of measurements
   14.1.4. Checks of electric equipment
   14.1.5. Sound signal
   14.1.6. Replacements of safety locks
   + 14.1.7. Rechargeable battery
   + 14.1.8. Generator
   - 14.1.9. Starter
      14.1.9.1. Diagnostics of malfunctions of a starter
   14.1.10. Traction relay
   + 14.1.11. System of lighting
   14.1.12. Devices
   14.1.13. Dashboard
   14.1.14. Glow lamps on the dashboard
   14.1.15. Light switch
   14.1.16. Radio receiver
   + 14.1.17. Antenna
   14.1.18. Loudspeakers
   + 14.1.19. Rubber brushes of screen wipers
   14.1.20. Windscreen washer jets
   14.1.21. The washing nozzles of headlights
   14.1.22. 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. Galogenka
+ 14.2. Electrical circuitries

14.1.9.1. Diagnostics of malfunctions of a starter

GENERAL INFORMATION

If the starter is not turned, then, first of all, check whether there is on the plug of the 50th traction relay tension, necessary for retraction, – not less than 8B. If the specified tension arrives, then it is necessary to check according to the electrical circuitry of the line which belong to an electric chain of a starter. Whether the starter in the presence of the full tension of the rechargeable battery is involved, it is possible to check as follows:

– do not include any transfer, include ignition;
– to a zashuntiruyta a wire (cross section is not less than 4 ^mm2) plugs 30 and 50 on a starter, see also electrical circuitry Electric equipment – a starter, the generator, the accumulator (a DB of 111 HFM/PMS).

If at the same time the starter is normally started, then malfunction consists in the wires going to a starter. In this case check a starter in the removed state.

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

REASON	WAY OF ELIMINATION
The starter does not rotate when actuating the switch of ignition and starter
The rechargeable battery is discharged	Charge the rechargeable battery.
The line 50 going to the switch of ignition and a starter is broken off, the starter switch is faulty	Eliminate a gap, replace faulty details.
The wire or connection on the case is broken off; the rechargeable battery is discharged	Check wires of the rechargeable battery and connection, measure tension of the rechargeable battery, if necessary charge it.
Insufficient passing of current owing to the loosened or oxidized connections	Clear poles and plugs of the rechargeable battery.
There is no tension on the plug 50 (the traction relay)	Restore the connections protected by safety locks between the rechargeable battery, a starter and the case of the car.
The starter rotates too slowly and does not start the engine
The rechargeable battery is discharged	Charge the rechargeable battery.
In the engine there is no winter engine or all-weather oil	Fill in all-weather oil.
Insufficient passing of current owing to the weakened or oxidized connections	Clear poles and plugs of the rechargeable battery and clear connections on a starter, hardly delay connections.
Coal brushes do not adjoin to a collector, plugs in the contact surfaces are worn-out, broken off, greasy or polluted	Check, clear or replace coal brushes, check contact surfaces.
Insufficient interval between coal brushes and collector	Replace coal brushes and clear contact surfaces of coal brushes.
The collector is scratched or burned and is polluted	Grind a collector or replace an anchor.
On the plug 50 there is no tension (at least 8 V)	Check the switch of ignition and starter or the traction relay.
The traction relay is faulty	Replace the traction relay.
The starter is started and involved, the shaft of the engine does not rotate or rotates only pushes
Gear transfer is faulty	Replace gear 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.
Gear transfer does not work
Gear transfer or abrupt carving are polluted or faulty	Clear gear 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 was switched off
The traction relay freezes up, it is not switched-off	Immediately switch off ignition, replace the traction relay.
The lock switch of ignition and devices is not switched-off	Immediately disconnect wires from plugs of the rechargeable battery, replace the lock switch of ignition and devices