Overview - Control Module And Hydraulic Unit

Control Module and Hydraulic Unit

Fig 1: Exploded View Of Control Module And Hydraulic Unit

Courtesy of AUDI OF AMERICA, LLC

1. Nut
   • 3.8 Nm
2. Nut
   • 3.8 Nm
3. Bracket
4. Rubber Bushing
5. Mounting Bracket
6. Bolt
   • Tighten in two steps alternating from side to side.
   • 1. Step: 1 to 1.5 Nm (to position the seal)
   • 2. Step: 2.5 Nm
7. ABS Control Module -J104-
   • If the ABS Control Module -J104- is faulty, it can be replaced separately.
   • If the ABS Hydraulic Unit -N55- is faulty, it must be replaced together with the ABS Control Module -J104-.
   • Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING 
   • Can be replaced separately if faulty.
   • Refer to CONTROL MODULE, SEPARATING FROM HYDRAULIC UNIT 
   • Refer to CONTROL MODULE, INSTALLING ON HYDRAULIC UNIT 
8. ABS Hydraulic Unit -N55-
   • If the ABS Control Module -J104- is faulty, it can be replaced separately.
   • If the ABS Hydraulic Unit -N55- is faulty, it must be replaced together with the ABS Control Module -J104-.
   • Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING 
9. Brake Line
   • To the brake caliper
   • 5.25 mm diameter and union bolt with M12x1 thread
   • Tightening Specifications
     • With standard tool: 14 Nm
     • With special tool. Refer to Fig 2 12 Nm
10. Brake Line
    • From brake master cylinder to the hydraulic unit
    • 6 mm diameter and union bolt with M12x1 thread
    • Tightening Specifications
      • Using a standard tool: 16 Nm
      • Using special tools (Refer to Fig 2): 14 Nm
11. Bolt
    • 25 Nm
12. Nut
    • 3.8 Nm

Brake lines tightening using special tools

Fig 2: Special Tool Assembly For Tightening Brake Lines

Courtesy of AUDI OF AMERICA, LLC

Special tools and workshop equipment required 

• Open Ring Spanner Insert - AF 11mm: VAG1410/6 
• Torque Wrench - Universal Joint : VAG1410/7 
• Mini Torque Wrench: VAS6854 

ABS Control Module -J104-

Fig 3: Identifying Pressure Sensor Contact, Pressure Sensor, Seal, Valve Bodies And Pump Motor Contact

Courtesy of AUDI OF AMERICA, LLC

1. Pressure Sensor Contact
   • Do not touch the contacts
   • The illustration depends on the model
2. Pressure Sensor
   • Must not be changed or damaged
   • Cannot be replaced
   • The illustration depends on the model
3. Seal
   • Do not remove or lift
   • Cannot be replaced separately
4. Valve Body
   • Must not be damaged
   • Do not use any tools
5. Pump Motor Contact
   • Must not be damaged