Audi 80/90/Coupe

since 1986-1991 of release

Repair and car operation

Audi 80/90/Coupe
+ 1.2. Car identification
+ 2. Engines, carburetors
3. Greasing system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Ignition system
+ 8. Transmission
+ 9. Suspension brackets, wheels
- 10. Brake system
   10.1.2. Brake shoes of forward brakes
   10.1.3. Brake shoes of back brakes
   10.1.4. General adjustment of back brakes (Girling)
   10.1.5. Replacement of brake shoes (all-wheel drive models)
   10.1.6. General adjustment of back brakes (Girling) (all-wheel drive models)
   10.1.7. Forks of pedals of a brake and coupling
   10.1.8. Adjustment of the hand brake
   10.1.9. Removal of the lever of the hand brake
   + 10.2. Hydraulic components
   - 10.3. Anti-blocking system of brakes
      10.3.2. Hydraulic pump
      10.3.3. Electronic control unit
      + 10.3.4. Elements ABS of a forward wheel
      + 10.3.5. Elements ABS of back brakes
      10.3.6. General comments on repair
+ 11. Steering
+ 12. Body, salon
+ 13. Central air
+ 14. Electric equipment


10.3.6. General comments on repair



Switch off ignition before connecting or disconnecting the socket of connection of the ABS control unit
1) disconnect the socket of connection of the ABS control unit before electric welding use for car repairs
2) disconnect the accumulator before its charging or replacement of the hydraulic modulator
3) remove the ABS control unit before a room of the car in a drying cabinet after painting if the temperature in it exceeds 85 ° From more than 2 o'clock

Do not establish the mini-tire on cars from ABS. Use wheels and tires of the demanded size on cars from ABS. Do not maintain the car with the connected tester of ABS.

Precautionary measures

After carrying out any repair over any of the following elements:

 – hydraulic modulator;
 – ABS control unit;
 – sensors of speed of rotation of wheels;
 – ABS wires;
 – it is necessary to carry out complete procedure of check of ABS, using ABS 2-LED tester.

Also, it is necessary to inspect ABS after replacement of brake tubes or pressure regulators in brake system which were damaged.

After repair of brake system which did not mention elements ABS, it is necessary to carry out the ABS following operational tests:

 – include ignition;
 – the alarm bulb of ABS should light up;
 – pass on the car with the switched-off blocking of differential with a speed above 6 km/h;
 – the alarm bulb of ABS should not light up.

Carry out this test after repair / replacement of the following elements:

 – brake shoes and / or brake disks;
 – brake hoses;
 – servo-driver of brake system or main brake cylinder;
 – ropes of brake system and elements of the hand brake.

At the last tests, check, that ABS joined at least at one of ways of braking.