Overview - Control Module And Hydraulic Unit

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Control Module and Hydraulic Unit

Fig 1: Control Module And Hydraulic Unit

Courtesy of AUDI OF AMERICA, LLC

Bracket
Nut
- 20 Nm
Rubber Insulation
Bracket
ABS Hydraulic Unit -N55-
- Removing and installing. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .
ABS Control Module -J104-
- Do not disconnect connector before successfully completing On Board Diagnostic (OBD). Switch ignition off before separating connector
- Removing and installing. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .
- Control module, separating from hydraulic unit. Refer to CONTROL MODULE, SEPARATING FROM HYDRAULIC UNIT .
- Control module, attaching to hydraulic unit. Refer to CONTROL MODULE, ATTACHING TO HYDRAULIC UNIT .
Brake Line
- 14 Nm
- From brake master cylinder to the hydraulic unit
- Identification: 5.25 mm diameter and union bolt with thread M12 x 1
Brake Line
- 14 Nm
- From brake master cylinder to the hydraulic unit
- Identification: 6 mm diameter and union bolt with thread M12x1
TORX^® Bolt
- Install the new TORX^® bolts in two steps switching back and forth.
- Step 1: temporary tightening specification: 1 Nm to 1.5 Nm (to install the seal)
- Step 2: final tightening specification: 2.5 Nm
Heat Shield
- There are different versions. Refer to the Parts Information for the allocation.
- Threaded version. Refer to Fig 2.
TORX^® Bolt
- 8 Nm

Heat Shield - Threaded Version

Fig 2: Heat Shield - Threaded Version

Courtesy of AUDI OF AMERICA, LLC

Replace the self-locking nut after removing.

-- Tighten the nut -1- to 8 Nm.

-- Press on the bracket with the lock washer -3- all the way.

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

Pressure Sensor Contact
- Do not touch the contacts
- The illustration depends on the model
Pressure Sensor
- Must not be changed or damaged
- Cannot be replaced
- The illustration depends on the model
Seal
- Must not be pulled out or raised up
- Cannot be replaced
Valve Bodies
- Must not be damaged or bent
- Do not use any tools
Pump Motor Contact
- Must not be damaged or bent