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E39 series BMW 5

since 1996-2001 of release

Repair and car operation



E39 BMW
+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
- Power supply system and release
   - Power supply system
      Economy of fuel at movement
      Rules of observance of purity at work with fuel system
      Check of the relay of the fuel pump
      Check of productivity of the fuel pump
      Removal and installation of the sensor of a reserve of fuel and fuel pump
      Removal and installation of the case of the air filter and measuring instrument of weight of air
   + System of injection of the petrol engine
   + Power supply system of the diesel engine
   + System of production of the fulfilled gases
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes
+ System of onboard diagnostics


Heavy Metal & Reflected



Check of the relay of the fuel pump

 PERFORMANCE ORDER

1. The relay of the fuel pump (2) is at on the right in a luggage carrier behind facing, over a battery room of batteries. Address to an accompanying illustration. It supplies with an electric current the fuel pump. By means of the safety switch it stops supply of fuel if at the included ignition impulses of number of turns of the engine do not arrive. If for check of system of injection it is necessary to start the fuel pump, without starting the engine, disconnect the relay and connect a short wire of the plug 30 and 87b (the Diesel engine: plug 87). Diameter of a wire of 1.5 mm.

For check of the relay of the fuel pump the storage battery should be charged.

2. Check a safety lock of system of injection. The arrangement of safety locks is shown on a cover of the block of safety locks.
3. Disconnect the relay of the fuel pump.

4. Connect a short wire of the plug 30 and 87b (the Diesel engine: plug 87). Address to an accompanying illustration. Do not damage thus sensitive contacts of the relay. If the pump works, replace the relay. If the pump does not work, check the wires going to the relay and the fuel pump. If necessary replace a wire.

5. Check the relay / the fuel pump, address to Sections of the Relay and relay Check.