Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
7.1. General information
7.2. Power supply system
7.2.1. Rechargeable battery
7.2.2. Shutdown and connection of the rechargeable battery in a motor compartment
7.2.3. Shutdown and connection of the rechargeable battery in a luggage carrier
7.2.4. Removal and installation of the rechargeable battery in a motor compartment
7.2.5. Removal and installation of the rechargeable battery in a luggage carrier
7.2.6. Check of reliability of fastening of joint stock bank
7.2.7. Accumulators with "a magic eye"
7.2.8. Rest voltage measurement
7.2.9. Check of level of electrolyte – joint stock bank with traffic jams
7.2.10. Check of density of electrolyte in all sections – joint stock bank with traffic jams
7.2.11. Voltage measurement under loading
7.2.12. Charging of the rechargeable battery
7.2.13. Strongly discharged joint stock banks
7.2.14. Bystry accumulator charging
7.3. Generator
7.4. Starter
7.5. Relay blocks, sockets and safety locks
8. Body
9. Schemes of electric equipment
 







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7.2.11. Voltage measurement under loading

When checking the accumulator under loading process of start is feigned at a low temperature. When checking in a chain big current proceeds, at the same time undervoltage, depending on accumulator capacity, only to the accumulator of the minimum value set by a tester is allowed.
If the accumulator is faulty or charged poorly, then tension of the accumulator will fall very quickly below the set minimum tension.
If tension falls below the minimum value, then the accumulator is subject to replacement.
After the executed check this low value of tension remains during longer period; tension rises only slowly again.

Procedure for test
Disconnect a weight wire from joint stock bank at the switched-off ignition.
Connect clips of plugs of a tester of the accumulator to accumulator poles.
Clips have to have good contact with an accumulator pole.
Establish loading current on an accumulator tester.

NOTE
Current of loading is established depending on current of cold scrolling of the accumulator (it is specified on the accumulator case).

Carry out an inspection of the accumulator under loading.
The result of check is displayed approximately through 20 pages on listing.


7.2.10. Check of density of electrolyte in all sections – joint stock bank with traffic jams

7.2.12. Charging of the rechargeable battery