The level sensor · The following parameters can be measured

911 Carrera (996) Roll-over protection system diagnosis The level sensor The following parameters can be measured with the aid of the level sensor: 2 Vehicle inclination Transverse acceleration 1 Longitudinalacceleration The level sensor consists of the following components: Spirit level housing which is filled with fluid and contains an air bubble Light-emittingdiode (LED)(sender function) Phototransistor (receiver function) 23o_98 1. Spiritlevelhousing 2. Air bubble 3. LED(sender) 4. Phototransistor(receiver) 5. Mirror If the vehicle exceeds the set limit values during transverse or longitudinalaccelerationor pitches around the longitudinalaxis by more than the limit value,the air bubble passes through the visual send and receive section. This movementof the air bubble is detected by the receiver and the system is triggered. 69 71 Diagnosis/troubleshooting, roll-over protection system 69 -D 31 Printed in Germany -11, 1998 99669D23