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E46 Traction and Stability Control Systems
Control Unit/Hydraulic Unit
The MK60 control unit/hydraulic unit is located
in the engine compartment on the left side
under the brake master cylinder.
Both the control unit and the hydraulic unit are
replaceable as separate components.
The pre-charge pump used on previous
systems is no longer required. Rapid pressure
build up is possible because of the close
proximity of the hydraulic unit to the master
cylinder and improvements in the design of the
return pump.
The control unit/hydraulic unit itself is 20%
smaller and lighter than the previous MK20 EI.
All processing functions for ABS, ASC or DSC are performed by the combined control
unit/hydraulic unit. The MK 60 control unit is also responsible for processing the wheel
speed signals and providing them to other control units.
The MK60 control unit for MY 2002 incorporates the RDW function into its scope of
control, making a separate RDW control unit unnecessary. The operating principle
continues to be based on the analysis of wheel speed.
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