Dsc Pressure Sensor; Dsc Precharge Pump; Switches And Indicators - BMW 1999-2005 M3 Service Manual

Suspension, Steering and Brakes — General
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angle sensor replacement or repairs to
the steering column. This recalibration is
performed using either the DIS or MoDiC
BMW scan tools.

DSC pressure sensor

The DSC pressure sensor(s) provides
the ABS/DSC control module an analog
voltage signal in proportion to brake
pressure in the master cylinder.
The DSC MK 20 and MK 60 systems use
two switches installed at the brake
master cylinder.
The Bosch DSC III 5.7 system uses one
switch installed at the DSC hydraulic
unit.

DSC precharge pump

The DSC precharge pump is used in the
Teves MK 20 DSC and Bosch DSC III 5.7
systems (1999 - 2000 DSC and 2001 all
wheel drive equipped vehicles).
The DSC precharge pump provides the
hydraulic unit with the necessary supply
of hydraulic brake fluid. When the DSC
system is activated, the precharge pump
delivers brake fluid from the reservoir to
the hydraulic unit at 10 bar (150 psi).

Switches and indicators

ASC/DSC control button
The control button is used to deactivate
the stability control functions of either
the ASC system or the DSC system.
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