The control module measures the distance Diagnosis · between the sensor and any obstacle in

The control module measures the distance Diagnosis between the sensor and any obstacle in The following components are subject to cyclical cyclical intervals. Measurementis based monitoring when the ignition is on and the shift on echo-soundingtechniques. lever is in reverse gear: The sensors are actuated briefly at regular intervals and transmit ultrasonic waves. Next, Control module supply voltage the sensors are switched to receive mode, and receive the reflecting soundwaves.The Sensor supply voltage control module then calculatesthe distance between the sensor and the obstacle from Functionof all sensors the running time of the soundwaves. Function of control module (transmission and reception pulses, EEPROM) Note Externalenvironmentalconditions such as ice, snow or dirt can also adversely affect the function of the sensors and lead to a fault being stored. The four sensors are connected to the control module via a wiring harness incorporated in the rear spoiler. To replace the sensors or to perform tests, the rear spoiler must be removed. 45o_98 475_98 451_98 9101 Diagnosis/troubleshooting ParkAssistent (System POI) 91 -D 43