Electric check of the fuel pump. Audi A4 (from 2001 to 2005 release)
Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
2.1. General information
2.2. Predvaritlny checks
2.3. Mekhanichsky part (petrol engines 2,0l)
2.4. Lubrication system
2.5. Cooling system
2.6. System of injection
2.6.1. Removal and installation of a turbocharger
2.6.2. Removal and installation of the vacuum block of a turbocharger
2.6.3. Adjustment of the vacuum block of a turbocharger (the turbocharger is removed)
2.6.4. The general instructions on self-diagnostics of system of injection
2.6.5. Decrease in high pressure of fuel
2.6.6. Removal and installation of a flowmeter of air
2.6.7. Removal and installation of an inlet collector with a fuel stage
2.6.8. Removal and installation of a fuel stage (Rail)
2.6.9. Removal and installation of nozzles
2.6.10. Check of pressure of fuel and residual pressure in front of the pump of high pressure
2.6.11. Check of residual pressure
2.6.12. Removal and installation of the pump of high pressure
2.6.13. Replacement of the control unit of the engine
2.6.14. Removal and installation a lambda probe in front of the catalyst
2.6.15. Removal and installation a lambda probe after the catalyst
2.6.16. The fuel tank (front-wheel cars – all models with MPI engines and 2,0 l of FSI)
2.6.17. Pumping of fuel from a tank
2.6.18. Removal and installation of the fuel tank with hinged details
2.6.19. Electric check of the fuel pump
2.6.20. Check of amount of the fuel given by the fuel pump (cars from the 4th the cylinder engine with a free admission)
2.6.21. Check of amount of the fuel given by the fuel pump (atomobil with the engine of 1,8 l Turbo)
2.6.22. Check of amount of the fuel given by the fuel pump (atomobil from the 4th the cylinder FSI engine)
2.6.23. Check of amount of the fuel given by the fuel pump (cars from 6 the cylinder MPI engine)
2.6.24. Removal and installation of knot of supply of fuel
2.6.25. Fuel tank (all-wheel drive cars till 10:04)
2.6.26. Pumping of fuel from a tank
2.6.27. Removal and installation of knot of a pedal of an accelerator with sensors of provision of a pedal
2.7. System of production of the fulfilled gases
2.8. Mechanical part (petrol engines 3,0; 3,2 l)
2.9. Mechanical part (petrol engines of 4,2 l)
2.10. Mechanical part (diesel engines of 2,0 l)
2.11. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







2-6-19-ehlektricheskaya-proverka-toplivnogo-nasosa.html

2.6.19. Electric check of the fuel pump

Check conditions
The minimum voltage of the accumulator is 12,5 Century.
The safety lock in a block of safety locks has to be serviceable (a nest 28).

Fig. 2.270. Relay of the fuel pump


The relay of the fuel pump of a nest of 1 block on 9 relays behind a glove compartment from the driver has to be serviceable (fig. 2.270).
The fuel filter has to be serviceable.
Ignition is switched off.
Procedure for test
Open a cover of the block of safety locks on the left side of the dashboard.
Take out a safety lock from a block of safety locks (the left row, the 5th big safety lock from above).
Connect remote control by means of an adaptor cable to the right plug of a socle.
Connect the tightening plug to the plug (+) joint stock bank of the car.
Press the switch of remote control.
After that noise of operation of the pump has to be heard.

NOTE
The fuel pump works very quietly. During check of the fuel pump do not allow extraneous noises.
If noise of operation of the pump is not heard, make the following actions.

Limousine
Remove a luggage carrier upholstery.
Cast away if necessary the right back of a back seat forward.
Avant
Remove a back 1/3 at the left.
Remove a luggage carrier covering sideways at the left and a mud-reception bathtub.
All models

Fig. 2.241. Fastening of a cover of a deaf flange


Turn off a cover of a deaf flange (fig. 2.241).

Fig. 2.260. Plug of a deaf flange


Disconnect the plug from a deaf flange (fig. 2.260).

Fig. 2.271. Contacts 1 and 4 sockets of the fuel pump


Connect a manual multimeter for voltage measurement on contacts of 1 and 4 (fig. 2.271).
Press the switch of remote control.
Preset value: прибл. as accumulator tension.
If the actual value below of set, eliminate a rupture of a chain, having used the electric circuit.

Fig. 2.272. Check of knot of supply of fuel


If the actual value equally set though noise of operation of the pump is not heard, remove knot of supply of fuel (fig. 2.272).
Make sure that the electric wires connecting a flange and the fuel pump are connected, check their conductivity.
If problems in conducting are not revealed, so the fuel pump is faulty – replace fuel supply knot.
Establish fuel supply knot.


2.6.18. Removal and installation of the fuel tank with hinged details

2.6.20. Check of amount of the fuel given by the fuel pump (cars from the 4th the cylinder engine with a free admission)