911 Carrera 4 Cabriolet (996) F6-3.4L (1999)
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The lateral acceleration sensor is installed on the centre console in longitudinal direction.
The transverse acceleration sensor supplies information about the transverse accelerations occurring in the vehicle to the PSM control module. Together
with the information from the steering-angle sensor and the rate-of-turn sensor, the current handling behaviour with respect to its transverse dynamics is
calculated. The sensor element is a damped spring-and-mass system. Its deflection is detected magnetically using a linear Hall element. The deflection is
a direct measure of the occurring transverse accelerations.
Lateral acceleration sensor PSM 5.7
The transverse acceleration sensor and the rate-of-turn sensor are combined in one housing in the PSM 5.7. The components are fitted on a printed
circuit board and operate according to the micro-mechanic principle. The sensor is connected via a six-pole plug. The transverse acceleration is
measured according to a capacitive principle. Without the transverse acceleration measurement, it is impossible for the PSM control module to calculate
the actual vehicle condition. The PSM function is switched off.
Rate-of-turn sensor PSM 5.3
The rate-of-turn sensor is located underneath the seat on the right in the PSM 5.3.
The rate-of-turn sensor supplies the PSM control module with an analog voltage signal which corresponds to the yaw speed of the vehicle.
Rate-of-turn sensor PSM 5.7
The rate-of-turn sensor is combined with the transverse acceleration sensor in the PSM 5.7 and is installed on the centre console in longitudinal direction.
The rate of turn is recorded by measuring the occurring Coriolis acceleration. Together with the information from the steering-angle sensor and the
rate-of-turn sensor, the current handling behaviour with respect to its transverse dynamics is calculated. Without measurement of the yaw speed, it is not
possible for the PSM control module to detect whether the vehicle is developing a tendency for spinning. The PSM function is switched off.
