VW Passat B5

since 1996 release

Repair and operation of the car

Foltsvagen Passat B5
+ Maintenance instruction
+ 1. Maintenance
+ 2. Engines
+ 3. Cooling system
+ 4. Fuel system
+ 5. Engine management
+ 6. Exhaust system
+ 7. Transmission
+ 8. Running gear
+ 9. Steering
+ 10. Brake system
+ 11. Body
+ 12. Heating, ventilation
- 13. Electric equipment
   13.2. General information
   + 13.3. Electric chains
   13.4. Safety locks
   13.5. Rules of care of the accumulator
   13.6. Check of the accumulator
   13.7. Accumulator charging
   13.8. Accumulator
   13.9. System of charging
   13:10. Generator
   13:11. Replacement of brushes of the generator and regulator of tension
   13:12. System of start of the engine
   13:13. Starter
   13:14. Traction relay of a starter
   13:15. Replacement of bulbs of external lighting
   13:16. Replacement of bulbs of internal lighting
   13:17. Devices of external lighting
   13:18. Executive engine of the proofreader of light of headlights
   13:19. Adjustment of light of headlights
   13:20. Gas-discharge lamps of headlights of passing beam
   13:21. Combination of devices
   13:22. Multipurpose switches of a steering column
   13:23. Switches
   13:24. Radio receiver
   13:25. High-frequency loudspeakers
   13:26. Low-frequency loudspeakers
   13:27. Antenna
   13:28. Check of a heater of back glass
   13:29. Windshield screen wiper engine
   13:30. Engine of a screen wiper of back glass
   13:31. Windscreen washer pump
   13:32. System of the central blocking of locks
   13:33. Main malfunctions of the generator
   13:34. Main malfunctions of a starter
   + 13:35. Electric circuits

13:10. Generator



1 – poliklinovy belt,
2 – generator,
3 – tension regulator,
4 – screws,
5 – protection cover,
6 – screws

The generator installed on models with engines 1,6-I and 1,8-I with the amplifier of steering and the air conditioning system

1 – arm,
2 – bolt of M8x90, 25 Nanometers,
3 – nut, 30 Nanometers,
4 – generator,
5 – tension regulator,
6 – screws,
7 – protection cover,
8 – screws,
9 – poliklinovy belt,
10 – bolt of M8x85, 25 Nanometers,
11 – bolt of M8x85, 25 Nanometers,
12 – tension mechanism roller,
13 – bolt of 25 Nanometers,
and – to the generator


Fastening of a wire (In + an arrow) you produce the moment of tightening 15 ± 1 Nanometer. If the moment of tightening of a wire is less demanded, then, perhaps, emergence of the following malfunctions:

  – extent of accumulator charging decreases;
  – operation of electric equipment is broken;
  – as a result of sparking there is a danger of ignition;
  – the increase in tension in onboard network of the car leading to failure of electronic control units.

Blue wire (D+) tighten the moment 3,2 ± 0,2 Nanometers.

Arm of the generator of cars with diesel engines with the amplifier of steering and the air conditioning system

1 – arm,
2 – nut, 30 Nanometers,
3 – bolt of 25 Nanometers,
4 – tension mechanism roller,
5 – bolt of M8x85, 25 Nanometers,
6 – Ibe,
and – to the generator

Generator arm on cars with engines of 2,3 l with the amplifier of steering

1 – bolt, 25 Nanometers,
2 – arm,
3 – bolt of M8x60, 25 Nanometers,
4 – washer,
5 – bolt of M8x60, 25 Nanometers,
6 – bolt of M8x60, 25 Nanometers,
and – to the generator

Generators of alternating current are installed in cars. Depending on model and the electric equipment installed on the car generators of various power can be installed. At installation of the additional electric equipment check that there was enough power of the generator for power supply of this equipment.

The drive of the generator is carried out by a maple belt from a bent shaft of the engine.

The generator represents the three-phase synchronous electrical machine with electromagnetic excitement. For transformation of alternating current in constant the rectifier on diodes is built in the generator. Tension is regulated by the built-in microelectronic regulator of tension.

During the operation of the generator the electric current proceeding on a winding of excitement creates a magnetic flux around rotor poles. At rotation of a rotor under each tooth of the stator passes the southern, the North Pole of a rotor and a working magnetic flux passing through stator teeth changes in size and tension. This variable magnetic flux creates the electromotive force in a stator winding. The wedge-shaped form of polar tips of a rotor is picked up in such a way that allows to receive a form of curve electromotive force close to sinusoidal.

With a high frequency of rotation of a rotor of the generator when tension of the generator becomes more, than 13,6-14,6 B, the regulator of tension is locked and current does not pass through a winding of excitement. Tension of the generator falls, the regulator opens and again passes current through an excitement winding. The frequency of rotation of a rotor of the generator is higher, the time of the locked condition of the regulator is more, therefore, the stronger tension at the generator exit decreases. Process of locking and unlocking of the regulator happens with high frequency therefore fluctuations of tension at the exit of the generator are not noticeable, and the constants supported at the level of 13,6–14,6 Century can almost consider it.

When checking the generator, and also at operation of the car it is necessary to follow a number of simple rules not to put the generator out of action:

Not to allow operation of the generator with the rechargeable battery disconnected from a generator clip. Without rechargeable battery in onboard network of the car there are dangerous impulses to a perenapryazha a niya at shutdown of any consumers of the electric power. This pulse an overstrain can put the electronic equipment of the car, including the regulator of tension and diodes of the vypryamitelny block of the generator out of action.

Not to check operability of the generator for a spark, even short-term connection of a plus clip of the generator with weight. At the same time via diodes considerable current proceeds and they damage ся. It is possible to control generator tension only the voltmeter.

Minus of the rechargeable battery has to connect always to the mass of the car, and plus to be connected to a generator clip. Wrong (return) turning on of the battery will immediately cause passing of the raised current via generator diodes, and they will fail.

Not to check diodes more than 12 V or the megohm meter as it has tension, too high for diodes, and they when checking will be punched (there will be a short circuit). When checking isolation of an electrical wiring the megohm meter it is necessary to disconnect all wires from the generator.

It is necessary to disconnect all wires from the generator and from the accumulator at electric welding of any details of a body.

To check chains and knots of electric equipment and to eliminate malfunctions it is necessary at the idle engine and the disconnected rechargeable battery.