Abs Control Module -J104- And Abs Hydraulic Unit -N55-, Removing And Installing, With 4-Cylinder Gasoline Engine And Abs Mark 70 Abs/ASR: Removing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Component Location:

The ABS Control Module -J104- is attached to the ABS Hydraulic Unit -N55- and is located inside the engine compartment on the right side.

1. ABS Hydraulic Unit -N55- with ABS Control Module -J104-
2. Brake Booster with Tandem Brake Master Cylinder

-- Retrieve 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/ASR Mark 70 
• Function 
• Check ABS Control Module J104 coding 

Vehicles with 2.0L Gasoline Engine and Turbocharger

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the engine cover upward from the attaching points -arrows-. Refer to ENGINE COVER (CNLA, CRJA) , ENGINE COVER (CVCA, CUUA, CUUB, DELA, DEBA, DEJA, DGMA) and ENGINE COVER (CPLA, CPPA, CPKA, CPRA) .

-- Open the clamp and remove the air guide hose from the air filter. Refer to AIR FILTER (CNLA, CRJA) , AIR FILTER (CZCA, CZDA, CZTA) , AIR FILTER (CBPA, CKJA) and AIR FILTER (CPLA, CPPA, CPKA, CPRA) .

-- Press the release button to remove the air duct hose -1-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the air duct hose -1- and move it to the side.

-- Remove the screw -arrow- for the air guide pipe.

-- Remove the air duct pipe; to do this, loosen the hose clamp -2-.

-- Remove the intake hose between the intermediate pipe and the turbocharger.

-- Seal the turbocharger with the :VAS6122  .

Vehicles with 1.4L Gasoline Engine, Turbocharger and Compressor:

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the engine cover -arrow A- and the heat shield -arrow B-. Refer to ENGINE COVER (CNLA, CRJA) , ENGINE COVER (CVCA, CUUA, CUUB, DELA, DEBA, DEJA, DGMA) and ENGINE COVER (CPLA, CPPA, CPKA, CPRA) .

-- Remove the pressure pipe with the regulating flap control unit -2-. Refer to INTAKE MANIFOLD (CNLA, CRJA) , INTAKE MANIFOLD (CZCA, CZDA, CZTA) , INTAKE MANIFOLD (CBPA, CKJA) , INTAKE MANIFOLD (CPLA, CPPA, CPKA, CPRA) .

-- Remove the charge air pipe -1-. Refer to CHARGE AIR SYSTEM (CNLA, CRJA) , CHARGE AIR SYSTEM (CVCA, CUUA, CUUB, DELA, DEBA, DEJA, DGMA) , CHARGE AIR SYSTEM (CPLA, CPPA, CPKA, CPRA) and CHARGE AIR SYSTEM (CZCA, CZDA, CZTA) .

Continuation for All Vehicles:

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- If equipped, remove the nut -1- and remove the heat shield -2-.

-- Disconnect and remove the connector from the ABS Control Module -J104- in direction of -arrow-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Insert the :VAG1869/2  .

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove front left caps -1-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove rear left caps -1-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Use a Suitable Bleeder Hose

It Must Fit Tightly on the Bleeder Valve So That No Air Can Get into the Brake System

-- Attach the bleeder bottle bleed hose -1- to the left front brake caliper breather valve.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Open the breather valve.

-- Attach the bleeder bottle bleed hose -1- to the brake caliper breather valve/left rear brake cylinder.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Open the breather valve.

-- Push the brake pedal at least 60 mm using the :VAG1869/2  .

-- Close the left front and left rear bleeder valves.

Do not remove the :VAG1869/2  .

-- Place enough lint-free cloths under the ABS Control Module -J104- and the ABS Hydraulic Unit -N55-.

Make Sure No Brake Fluid Gets on the Contacts

-- Mark brake lines -A and B- from brake master cylinder.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the brake lines -A and B- from the ABS Hydraulic Unit -N55-.

-- Seal the threaded hole immediately with plugs from the assembly repair kit.

-- Close brake lines immediately using Sealing Plugs or with suitable plugs from the :VAS6122  .

-- Mark brake lines (brake calipers) -1 to 4-, unscrew and seal.

-- Seal the threaded hole immediately with plugs from the assembly repair kit.

-- Close brake lines immediately using Sealing Plugs or with suitable plugs from the :VAS6122  .

-- Remove the ABS Hydraulic Unit -N55- and the ABS Control Module -J104- in direction of -arrow- and pull upward out of the shock absorbers.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Turn the ABS Hydraulic Unit -N55- with the ABS Control Module -J104- upside down.

-- Remove the bracket in the vehicle from the hydraulic unit -arrows- (only on engines with too little clearance between the cross panel and engine).

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the ABS Hydraulic Unit -N55- with the ABS Control Module -J104-.