BMW 3 Series E46

since 1998 release

Repair and operation of the car



BMW 3 Series E46
+ BMW 3 cars (E46)
+ Current leaving and service
+ Engine
+ Cooling systems, heating
- Power supply systems, injection and release
   Security measures and rules of respect for purity during the work with fuel system
   Removal and installation of the sensor of a reserve of fuel / fuel pump
   Check of the sensor of a reserve of fuel
   - Power supply system of petrol engines
      Removal, installation and check of the relay of the fuel pump
      Removal and installation of the fuel filter
      Removal, installation and adjustment of the drive of a butterfly valve
      Removal and installation of the air filter of the engine
   + System of injection of fuel of the petrol engine
   + Power supply system of diesel engines
   + System of production of the fulfilled gases
+ Engine electric equipment
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment





Removal, installation and check of the relay of the fuel pump

Holder of the relay

1 — the relay of the fuel pump
2 — the heater fan relay

3 — the relay of fog lights
4 — the relay of a sound signal


The relay of the fuel pump is on the holder of the relay behind the block of safety locks. It supplies the fuel pump with electric current. By means of the safety switch it interrupts fuel supply when at the included ignition impulses of turns do not move, for example, when the engine decayed.

If for check of system of injection it is necessary to turn on the fuel pump at the idle engine, disconnect the relay and connect a short auxiliary cable of the plug 30 and 87b. Diameter of a wire has to make 1.5 mm.

 REMOVAL

1 Remove a ware box, address the Section Removal and installation of the left ware box and Removal and installation of the right ware box.
2 Take out by means of the small screw-driver sideways a lamp of illumination and to a rasstykuyta I will corrode.

3 Unscrew screws (arrows on an illustration) and uncover-1-down. From a reverse side of a cover take out a wire of a lamp of illumination of a ware box.

4 Wring out a little back a cover-1-and take out from guides-2-. Disconnect brackets around-3-.

5 Unscrew the screw (the shooter on an illustration) and displace the holder of the relay a little down.

6 Remove the relay of the fuel pump-1-.



 CHECK

For check of the relay of the fuel pump the rechargeable battery has to be charged.

7 Check a safety lock of system of injection. The arrangement of safety locks is shown on the scheme in the block of safety locks.

8 Take out the relay - a 3-.soyedinita a short auxiliary wire of the plug 30 and 87b (the diesel engine: plug 87). At the same time do not damage sensitive contacts of the relay. If it is heard as the fuel pump turns on, replace the relay.

9 If the pump does not work, check the wires going to the relay and the pump. If necessary replace.
10 Check the relay / the fuel pump.



 INSTALLATION

11 Establish to the place of the relay.

12 Reject the holder of the relay up and fix by the screw.

13 Insert a cover into guides.

14 Lay a wire to a lamp of illumination of a prophetic box from a reverse side of the top cover. Fix a cover.

15 Attach a lamp of illumination and record it.
16 Establish into place a ware box, address the Sections Removal and installation of the left ware box and Removal and installation of the right ware box.




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