Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
+ ENGINE
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
- SYSTEMS OF START, IGNITION
   14.2. General information
   14.3. Rules of care of the accumulator
   14.4. Accumulator check
   14.5. Battery charging
   14.6. Accumulator
   14.7. Charging system
   14.8. Generator
   14.9. Replacement of the block of a regulator of tension and shchetkoderzhatel
   14.10. System of start of the engine
   14.11. Starter
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
+ ELECTRIC EQUIPMENT
+ CHECK OF MALFUNCTIONS






14.10. System of start of the engine

GENERAL INFORMATION

If the starter does not work in the provision of a key "engine start", the following reasons are possible:

• The accumulator is faulty.

• Break of an electric chain between the ignition lock, the traction relay, the accumulator and a starter.

• The traction relay is faulty.

• Mechanical or electric defect of a starter

For check of the accumulator light headlights. If they grow dull in some seconds, the accumulator means is discharged. Recharge or replace the accumulator. If headlights do not grow dull, include a starter and watch light. If they grow dull, means, tension arrives to a starter and malfunction is in it. If headlights continue to burn brightly (and there is no click of the traction relay of a starter), it specifies that there is a damage in электричес which chains or the traction relay is faulty. If the starter rotates slowly, and the accumulator in a good condition, it specifies that the starter is faulty or there is a considerable resistance at an electric chain of a starter.

If damage to an electric chain is suspected, disconnect the accumulator and clear all connections and contacts in a starter power-supply circuit. Repeatedly connect the accumulator and, using the voltmeter, check tension on elements of an electric chain to a starter.

If the accumulator and an electric chain in a good condition, remove a food wire from the traction relay and connect to it the voltmeter. Turn the ignition key in situation "engine start". In this situation there should be a full tension of the accumulator.

Contacts of the traction relay can be checked by voltmeter connection between contact of the traction relay connected to a starter and the earth. At ignition key turn in situation "engine start" the voltmeter should show tension. In the absence of tension the solenoid of the traction relay is faulty or contacts of the traction relay scorched.

If the electric chain and the traction relay are serviceable, means the starter is faulty.