Home ReviewsRefund Car not listed?
Home/Audi/A8/Audi A8 D2 facelift (1999-2002)/Repair manual/Anti-Lock/traction Control/Antilock Brake System: Overview
Contents Wiring diagrams Section: Anti-Lock/traction Control All sections

Antilock Brake System: Overview Audi A8 D2 facelift

Anti-Lock/traction Control ~717 words

ABS/ESP, component overview

The following list pertains to (Схема №2).

  1. Hydraulic pump for traction control -V156- for ESP
  2. Sender 1 for brake booster -G201- in driving dynamic control - pump for ESP
  3. ABS return flow pump relay -J105- Bosch 5.3
  4. ABS Solenoid Valve Relay -J106- Bosch 5.3
  5. ABS Hydraulic Unit -N55- with ABS control module (w/EDL) -J104
  6. ABS Control Module (w/EDL) -J104- Bosch 5.0 Installed position in instrument cluster
  7. Brake fluid level warning switch -F34
  8. Rotor for right front ABS wheel speed sensor Checking, see «ABS WHEEL SPEED SENSOR ROTOR, CHECKING»(ref-196874-S04104772972005100900000) , and «AXLE SHAFTS»(ref-2156) and «SUSPENSION - FRONT»(ref-168178)
  9. Right front ABS wheel speed sensor -G45- Removing and installing, see «ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING»(ref-196874-S10622774092005100900000)
  10. ABS Control Module (w/EDL) -J104- for ESP Installed position in instrument cluster
  11. Steering Angle Sensor -G85- for ESP Installation location: installed on steering column Removing and installing See «STEERING»(ref-196877) .
  12. Anti-Slip Control Switch -E132- Installed position at center console
  13. Steering angle sensor -G85- In one housing with airbag spiral spring Removing and installing, see «STEERING ANGLE SENSOR -G85-, REMOVING AND INSTALLING»(ref-196874-S08424208132005100900000)
  14. Parking brake warning light switch -F9- Installed position at parking brake assembly
  15. Rotor for right rear ABS wheel speed sensor Rotor is welded to wheel hub. Removing and installing See «SUSPENSION - REAR»(ref-153265) .
  16. Right rear ABS wheel speed sensor -G44- Removing and installing, see «ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING»(ref-196874-S18149883712005100900000)
  17. Left rear ABS wheel speed sensor -G46- Removing and installing, see «ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING»(ref-196874-S18149883712005100900000)
  18. Rotor for left rear ABS wheel speed sensor Checking, see «ABS WHEEL SPEED SENSOR ROTOR, CHECKING»(ref-196874-S36520563442005100900000) Rotor is welded to wheel hub. Removing and installing See «SUSPENSION - REAR»(ref-153265) .
  19. Sensor for transverse acceleration -G200- New version with sensor for rotation rate -G202- in one housing Removing and installing, see «SENSOR FOR TRANSVERSE ACCELERATION -G200- AND SENDER FOR ROTATION RATE -G202-, REMOVING AND INSTALLING»(ref-196874-S19338442802005100900000)
  20. Sender for rotation rate -G202- Removing and installing, see «SENSOR FOR TRANSVERSE ACCELERATION -G200- AND SENDER FOR ROTATION RATE -G202-, REMOVING AND INSTALLING»(ref-196874-S19338442802005100900000)
  21. ABS return flow pump relay -J105- only for Bosch 5.3 Installed position at fuse box
  22. ABS Solenoid Valve Relay -J106- 5.3 Bosch 5.3
  23. Warning light for brake system -K118-, malfunction symbol Installed position in instrument cluster in Driver Information System (DIS)
  24. ABS warning light -K47- Installed position in instrument cluster
  25. Parking brake indicator light -K14- Installed position in instrument cluster
  26. Traction control indicator light -K86- Installed position in instrument cluster
  27. Brake light switch -F- Removing and installing brake light switch, see «BRAKE LIGHT SWITCH, REMOVING AND INSTALLING»(ref-196874-S33196096312005100900000)
  28. Rotor for front left ABS wheel speed sensor Checking, see «ABS WHEEL SPEED SENSOR ROTOR, CHECKING»(ref-196874-S04104772972005100900000) See «SUSPENSION - FRONT»(ref-168178) and «AXLE SHAFTS»(ref-2156) .
  29. Left front ABS wheel speed sensor -G47- Removing and installing, see «ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING»(ref-196874-S10622774092005100900000)
CAUTIONBefore beginning repairs on the electrical system: Obtain the anti-theft radio security code. Switch the ignition off. Disconnect the battery Ground (GND) strap. On vehicles equipped with Audi Telematics by OnStar, switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery.. See EXAMPLE: SWITCH OFF EMERGENCY (BACK-UP) BATTERY . After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to Repair Manual and/or Owner's Manual. After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar, switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module. See EXAMPLE: SWITCH ON EMERGENCY (BACK-UP) BATTERY .

Hydraulic control unit, assembly overview

Brake line tightening torque: 15 Nm.

The following list pertains to (Схема №14).

  1. Hydraulic control unit Brake line connections, see «INSTALLED, UP TO MARCH 1997»(ref-196874-S37212614032005100900000) and «INSTALLED, AS OF APRIL 1997»(ref-196874-S31132694172005100900000) . Removing and installing, see «ABS HYDRAULIC UNIT, REMOVING AND INSTALLING»(ref-196874-S31899441982005100900000)
  2. Collar nut, 12 Nm
  3. Suction dampers To be discontinued gradually (will be incorporated in hydraulic control unit) Checking, see «INSTALLED, UP TO MARCH 1997»(ref-196874-S33989694572005100900000)
  4. Collar nut, 10 Nm
  5. Bonded rubber bearing
  6. Bracket
  7. Collar nut, 10 Nm
  8. Screw and washer assembly, 10 Nm
  9. Washer
  10. Buffer
  11. Bearing bushing

Hydraulic unit with hydraulic pump for traction control, assembly overview

Brake line tightening torque: 15 Nm.

The following list pertains to (Схема №19).

  1. Hydraulic control unit Brake line connections, see «BRAKE LINE CONNECTIONS: HYDRAULIC CONTROL UNIT WITH HYDRAULIC PUMP FOR TRACTION CONTROL»(ref-196874-S04954777002005100900000) Removing and installing, see «ABS HYDRAULIC UNIT, REMOVING AND INSTALLING»(ref-196874-S13296238912005100900000)
  2. Collar nut, 12 Nm
  3. Collar nut, 10 Nm
  4. Bonded rubber bushing, 2 Nm
  5. Bracket
  6. Collar nut, 10 Nm
  7. Screw and washer assembly, 10 Nm
  8. Washer
  9. Buffer
  10. Bearing bushing
  11. Hex-nut, tighten to 10 Nm.
  12. Bearing bushing
  13. Buffer
  14. Hydraulic pump for traction control Also called the booster pump Removing and installing, see «ABS HYDRAULIC UNIT, REMOVING AND INSTALLING»(ref-196874-S13296238912005100900000)
  15. Bonded rubber bushing, 2 Nm
  16. Hex-nut, tighten to 10 Nm
  17. Brake fluid reservoir
  18. Intake hose Mount at bracket with white paint markings.
  19. Intake line Leads to hydraulic pump for traction control
  20. Hose clamp
  21. Bracket for brake lines Application of brake lines, see «APPLICATION OF BRAKE LINES IN BRACKET»(ref-196874-S38161962502006060600000)

More articles — Antilock Brake System