Passat Sedan 4Motion V6-2.8L (ATQ) (2003)
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Remove bolts -1- to -6- from hydraulic unit.
The return pump must not be separated from the hydraulic unit.
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Carefully disconnect hydraulic unit with hydraulic pump at interface upward from control module.
When removing the control module, be sure that valve domes -1- of hydraulic unit -b- do not jam with the magnetic coils -2- of control module -a-.
Cover control module magnetic coils with a lint free cloth.
Use transport protection for valve domes after disconnecting from control module and hydraulic unit.
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Check sealing surface of hydraulic unit for scoring, scratches etc. The sealing surface must be undamaged.
If the sealing surface at hydraulic unit is damaged, the hydraulic unit with the control module must be replaced.
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Check contact springs -1- of return flow pump for burn spots and oxidation. Do not clean the contact springs.
If the contact springs at hydraulic unit are damaged, the hydraulic unit with the control module must be replaced.
Assembly
Vehicles with ASR- and ESP-control module
