BMW 5 Series E39

since 1996-2001 release

Repair and operation of the car



BMW E39
+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Safety locks
   Fusible inserts
   Chain breakers (thermal relays)
   Relay
   Check of the relay
   Check of glow lamps
   Check of electric motors
   Check of electric switches
   Check of switches of lamps and electric motors
   Check of sensors
   Check of the electric motor of a screen wiper
   Check of a stoplight
   Check of a heater of back glass
   Removal and installation of the switch
   Removal and installation of the sensor of temperature
   Removal, installation and check of a sound signal
   Initialization of remote control of the uniform lock
   Adjustment of range of light of headlights
   Removal and installation of the electric motor of adjustment of range of light
   Replacement of safety locks
   Arrangement of safety locks
   Lighting devices
   Replacement of glow lamps
   Removal and installation of a headlight
   Adjustment of headlights
   Removal and installation of a back lamp
   Monitors
   Removal and installation of the block of the dashboard
   Replacement of lamps of the block of the dashboard
   Removal and installation of the switch of signals of a turn/screen wiper
   Removal and installation of the radio receiver
   Screen wiper
   Replacement of brushes of a screen wiper
   Removal, installation and adjustment snuffled windscreen washer
   Removal and installation of the drive of a screen wiper/cover
   Removal and installation of the electric motor of a screen wiper
   Check and replacement of the pump of windscreen washer
   Work with electric circuits
+ Schemes of electric equipment
+ System of onboard diagnostics





Check of switches of lamps and electric motors

 CHECK

1. Remove the corresponding switch.
2. Ordinary switches have only two accessions. In this case on one of contacts always there has to be tension (+), and after switching off as well on the second. There are switches with several contacts. It is necessary to find out from such switches according to the scheme where tension moves. If necessary it is possible to include ignition.
3. By means of a control lamp check whether there is tension on the output plug. If tension is, the switch is serviceable.
4. If on the entrance plug there is no tension, there is a break in a food cable. By means of the electrical circuitry it is necessary to check a wire of tension and if necessary to replace a wire.