Audi:: A8:: Electronic blocks in a motor compartment

1. Operation of the car
2. Maintenance
3. Petrol engines of 2,8 l
4. Petrol engines 3,7 and 4,2 of l
5. Diesel engines of 2,5 l
6. Diesel engines of 3,3 l
7. Systems of ignition and injection of fuel of petrol engines
8. System of production of the fulfilled gases of cars with petrol engines
9. Power supply system of diesel engines
10. System of prestarting heating of diesel engines
11. System of production of the fulfilled gases of cars with diesel engines
12. Lubrication system
13. Cooling system
14. Coupling
15. Transmission
16. Shaft of the drive of forward wheels
17. Features of a design of transmission of all-wheel drive cars
18. Suspension bracket
19. Wheels and tires
20. Steering
21. Brake system
22. Body
23. System of heating and conditioning
24. Electric equipment
- 24.1. General information
- 24.2. Electric chains
- 24.3. Safety locks
- 24.4. Electronic blocks in a motor compartment
- 24.5. Electronic blocks in a niche for the passenger's legs
- 24.6. The block of fuses in a niche for the passenger's legs
- 24.7. The relay block in a niche for the driver's legs
- 24.8. An additional arm of the relay in the luggage compartment
- 24.9. Rechargeable battery
- 24:10. Generator
- 24:11. System of launch of the engine
- 24:12. Starter
- 24:13. Headlights
- 24:14. Replacement of lamps of external lighting
- 24:15. Lamp of passing beam and/or fog lamp
- 24:16. Lamp of driving beam of headlights
- 24:17. Adjustment of light of headlights
- 24:18. Forward index of turn
- 24:19. Side repeater of turn
- 24:20. Lamps of a back lamp in a wing
- 24:21. A back lamp in a wing
- 24:22. Lamps of a back lamp in a trunk lid
- 24:23. A back lamp in a trunk lid
- 24:24. Top stoplight
- 24:25. Forward lamp of illumination of salon
- 24:26. Combination of devices
- 24:27. Switches of a steering column
- 24:28. Ignition lock cylinder
- 24:29. Ignition lock
- 24:30. Switches of the central section of the dashboard
- 24:31. Switch of a heater of a back seat
- 24:32. Switch of adjustment of provision of a mirror
- 24:33. Forward switches of window regulators
- 24:34. Back switches of window regulators
- 24:35. Radio receiver
- 24:36. Loudspeakers of a forward door
- 24:37. Loudspeakers of a back door
- 24:38. Loudspeakers of the back shelf
- 24:39. Check of a heater of back glass

24.4. Electronic blocks in a motor compartment

In a motor compartment control units of the engine, and the vtomatichesky transmission and system of maintenance of constant speed of the car are located (cruise control).

Unscrew screws and remove the casing of the air-ventilation chamber located in a back part of a motor compartment.

Unscrew four screws of fastening and remove a casing of the electronic block.

Fig. 18-3. An arrangement of electronic control units in a motor compartment: 1 – control unit of system cruise control; 2 – control unit of the engine; 3 – control unit of the automatic transmission

If necessary disconnect electric sockets and remove the required block (fig. 18-3).

Fig. 18-4. Use of the special tool 1922 for a detachment of sockets of an electronic control unit in a motor compartment

For a detachment of sockets it is necessary to use the special tool 1922 (fig. 18-4).

Installation is carried out to the sequences, the return to removal.