Control Module, Separating From Hydraulic Unit
Special tools and workshop equipment required
- ESD Work Surface :VAS 6613
- Torque Screwdriver : VAG 1624
- Torx socket T25
- If the control module is faulty, then the control module is to be separated from the hydraulic unit and only the control module replaced.
- If the hydraulic unit is faulty, the hydraulic unit and the control module are to be replaced together.
- The ESP unit must be removed in order to separate the control module and the hydraulic unit.
There is a risk of destroying the hydraulic unit by removing the return flow pump.
- Never separate the return flow pump from the hydraulic unit.
There is a risk of destroying the control module through the electrostatic charge and reduced cleanliness.
- Discharge electrostatic charge: touch the electro-static discharge work surface
- Protect the inner control module from moisture and dirt.
-- Touch a grounded object before working on electrical equipment ESD Work Surface :VAS 6613 . Do not touch the connector terminals or electronic components directly.
-- Position the hydraulic unit with the control module on the ESD Work Surface :VAS 6613 .
-- Remove the bolts -1-.
-- Position the hydraulic unit with the control module from upward on the ESD Work Surface :VAS 6613 .
-- Remove the control module -1- from the hydraulic unit -2-. Make sure that it is not tilted.
-- Cover the control module solenoid coils with a lint free cloth.
-- Check the cleanliness of the hydraulic unit sealing surface if necessary clean with mineral spirits and a lint-free cloth.
The hydraulic unit sealing surface must not be worked with a file, metal scraper, sand paper or similar.
If the hydraulic unit sealing surface is damaged (for example through grooves or scrapes) the hydraulic unit must be replaced with the control module.
The seal on the control module must not be pulled out or raised up.
The seal on the control module cannot be replaced.