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Home >> BMW >> 1999 >> 323is Automatic >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Dynamic Stability Control Systems - Overview >> Dynamic Stability Control Systems >> BOSCH DSC III - 5.7 Components >> Rotation Rate/Transverse Acceleration Sensor

Rotation Rate/Transverse Acceleration Sensor

Located under the driver's seat, the rotation rate and transverse acceleration sensor have been combined into one unit. The new sensor is smaller in size and weight and is isolated from chassis vibrations through its rubber mounting.

The sensor provides the same information as the two separate sensors used on the DSC 5.3 version. It receives power and ground from the DSC control module.

For rotational speed, the sensor produces a reference signal of 2.5 volts and a linear voltage signal from 0.7 to 4.3 volts. This linear voltage input signal is used by the DSC control module as the degree of rotational rate (yaw).

The sensor also produces a linear voltage signal for the lateral acceleration (G-force) that ranges from 0.5 to 4.5 volts. The DCS control module uses this input to determine the side forces acting on the vehicle for DSC regulation.

Fig 1: Rotation Rate/Transverse Acceleration Sensor Operational Diagram
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