Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
7. An onboard electric equipment
7.1. The general data
7.2. Power supplies system
7.3. The generator
7.4. A starter
7.5. Relay blocks, sockets and safety locks
7.5.1. Removal and installation of the block of management of a combination of devices
7.5.2. Multicontact sockets in the block of management of a combination of devices
7.5.3. Removal and installation of the block of safety locks
7.5.4. Removal and installation of the block of management of an onboard network
7.5.5. Removal and installation of the 9-nested block of the relay
7.5.6. Removal and installation of the 3-nested block of the relay
7.5.7. Removal and installation of the 4-nested block of the relay
7.5.8. Removal and installation left штекерной pads
7.5.9. Removal and installation of the central block of management of system Komfort
7.5.10. Removal and installation right штекерной pads
7.5.11. Removal and installation of a box of the main safety lock in a luggage carrier behind at the left – Audi RS4
7.5.12. Removal and installation of the block of the main safety lock – cars with the accumulator in a motor compartment
7.5.13. The general instructions on repair electricians of the car
7.5.14. Repair of wires of tyre CAN
7.5.15. Breakage of a wire with repair in two places
7.5.16. Repair of contacts in cases of sockets
7.5.17. Mechanical blocking of the case of a socket
7.5.18. Round contacts
7.5.19. Flat contacts to asymmetrical lock uvulas
8. A body
9. Electric equipment schemes
 




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7.5.17. Mechanical blocking of the case of a socket

Secondary fastening is a clamp of the case of a socket which fixes all wires in the socket case. If the socket case has secondary fastening before an unblocking and extraction of separate contacts it is necessary to open it or remove by means of the special tool-master key.
Secondary fastening is allocated on the socket case with other colour. It facilitates recognition of secondary fastening and specifies a principle of its action.
The forms of cases of sockets represented here are not unique in all their assortment, they only visually show various principles of action of secondary fastenings.

Example 1

Fig. 7.121. A comb site


The case clamp is necessary for unblocking, having removed "comb" (fig. 7.121).

Example 2

Fig. 7.122. A clamp unblocking


Having opened "uvula", it is possible to unblock a connection clamp (fig. 7.122).

Example 3

Fig. 7.123. A latch site


The connection clamp can be unblocked, having extended "latch" (fig. 7.123).


7.5.16. Repair of contacts in cases of sockets

7.5.18. Round contacts