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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System (Abs) - PSM 5.3/5/7 Diagnosis - 911 CARRERA (996) >> Function of individual components >> PSM 5.3/ PSM 5.7 >> Rate-of-turn sensor PSM 5.7

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.

Fig 1: Identifying Rate-Of-Turn Sensor, PSM 5.7
G03098981Courtesy of PORSCHE OF NORTH AMERICA, INC.

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.