Abs Control Module, Separating From Abs Hydraulic Unit

-- Get the coding from the ABS Control Module -J104- and write it down.

Use the Vehicle Diagnostic Tester.

• Chassis 
• Brake System 
• Anti-lock braking system ABS/EDS/ASR/ESP Mark 60 EC 
• Function 
• Check coding in the ABS Control Module J104 

Remove the ABS Hydraulic Unit -N55- and ABS Control Module:

• 5-cylinder gasoline engine, refer to ABS Control Module -J104- AND ABS Hydraulic Unit -N55- .
• 6-cylinder gasoline engine, refer to ABS Control Module -J104- AND ABS Hydraulic Unit -N55- .
• 4-cylinder diesel engine, refer to ABS Control Module -J104- AND ABS Hydraulic Unit -N55- .

Fig 1: Identifying Sealing Plug Repair Set, Part No. 1H0 698 311 A

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The transportation protection for the valve body must be installed on the ABS Hydraulic Unit -N55- after separating the ABS Control Module -J104- from the ABS Hydraulic Unit -N55-.

The warranty on the ABS Hydraulic Unit will not be honored if the transportation protection is missing.

1. Transport protection for valve domes (foam)
2. Sealing plug M 10
3. Sealing plug M 12

-- Place the ABS Hydraulic Unit and the ABS Control Module on a clean level surface facing upward.

-- Remove bolts -Arrows-.

Fig 2: Identifying ABS Hydraulic Unit Screws

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the ABS Control Module from the ABS Hydraulic Unit in -direction of arrow- without tilting it.

Fig 3: Identifying Removal Of Control Module From Hydraulic Unit

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Carefully remove all the seals from the valve domes on the ABS Hydraulic Unit -N55-.

• The return flow pump must not be separated from the hydraulic unit.
• The circuit board is laid open on a disconnected control module.
• No moisture or dirt particles must get into the control module.
• Avoid electrostatic charge!

-- Cover ABS Control Module -J104- solenoid coils with a lint-free cloth.