Malfunctions of the battery charging system occur mainly due to improper operation of the vehicle (loose or broken alternator drive belt, oxidation of battery terminals, unreliable connections in the charging circuit). Adjustment of the drive belt is described in the chapter "Car maintenance work", and methods for charging a discharged battery are in the chapter "Basic rules for carrying out work".
The car is equipped with a starter with pre-engagement of gears, which is activated by means of a retracting relay (solenoid). Access to the starter is restricted, and the starter must be removed from the vehicle for repairs. The starter repair procedure is described in this chapter.
The car may be equipped with one of two types of generators - Motorola or Bosch. Their design is similar, the repair of both types of generators is described in this chapter. If a defect in the main parts of the generator is detected during the inspection, the most economical (compared to repair) will be purchasing a new generator from a VW representative or an auto parts store.
Ignition distributors, both with contact breaker and contactless type, have a conventional design. Checking and adjusting contact breakers is described in the chapter "Engine adjustment", removal and inspection of the distributor - in this chapter.
All Golf, Jetta and Scirocco models have an electrical system with a negative (-) pole connected to the "ground" (car body). When connecting and checking electrical devices, it is necessary to strictly observe polarity.
[The original text can be found at vwmanual.ru]
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