BMW 3 series E46

Since 1998 of release

Repair and car operation



The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ РКПП and трансмиссионная a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   - Дигностика electric elements
      Diagnostics of malfunctions of an onboard electric equipment - the general information
      Safety locks - the general information
      Replacement of safety locks
      Fusible inserts - the general information
      Chain breakers (thermal relays) - the general information
      The relay - the general information
      Check of the electric motor of a screen wiper
      Stoplight check
      Check of warmed back glass
      Removal and installation of the gauge of temperature
   + Illumination and the alarm system
   + Devices and the equipment
+ Electric equipment schemes





Safety locks - the general information


Protection of electric contours of the car is provided with application of a combination of safety locks, breakers of a chain and fusible inserts. The burnt down safety lock is easy for distinguishing from serviceable by survey of its transparent plastic case. Attentively examine a safety lock about its revealing перегорания. If the safety lock outwardly looks normally, but suspicions on its malfunction have remained, make conductivity check between ножевыми the plugs acting from its case.

At replacement of safety locks watch conformity replaceable old on type. The safety locks calculated on a various current strength can outwardly look identical, therefore it is necessary to give special attention to marks. Replacement of the burnt down safety lock on calculated on smaller - and especially big - a current strength is undesirable. Each electric contour requires different degree of protection. Watch that marks on the safety lock case corresponded to a current strength on which the corresponding contour is calculated.

If the replaced safety lock immediately fuses, it is not reasonable to continue its replacement. Before it is necessary to reveal and eliminate its reason выбивания. In most cases that appears short circuit of electroconducting of the contour, caused by breakage or damage of isolation of a wire.