Anti-Lock Brake Module: Removing

-- Disconnect the negative (ground) cable from the battery and isolate it.

CAUTION:

Before disassembling the integrated control unit (ICU), the ICU must be thoroughly cleaned. This must be done to prevent dirt particles and debris from entering into vital areas of the ICU.

-- Thoroughly clean all surfaces of the ICU and brake tubes. Use only a solvent such as brake parts cleaner or equivalent.

NOTE:

Use this figure in the following step to release the ABM harness connector cover. It shows the location of the release tabs.

Fig 1: Releasing ABM Harness Connector Cover

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-- Disconnect the ABM harness connector from the Antilock Brake Module (ABM). To do so:

-- Depress the tabs on each side of the connector cover, then

-- Pull outward and upward on the lower half of the cover until it locks into position pointing straight outward (2). The connector can then be pulled straight outward off the ABM (1).

Fig 2: Identifying ABM Harness Connector

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-- Remove the four screws (1) attaching the ABM (2) to the HCU.

Fig 3: Identifying ABM Mounting Screws

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CAUTION:

When removing the ABM from the HCU, be sure to completely separate the two components (approximately 38 mm (1.5 inches)) before removing the ABM. Otherwise, damage to the pressure sensor or pump motor connection may result, requiring HCU replacement. Do not to touch the sensor terminals on the HCU side or the contact pads on the ABM side as this may result in contamination and issues in the future.

-- Separate the ABM (1) from the HCU (2).

Fig 4: Identifying ABM, HCU And Solenoid Valve Stems

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.