For an in-depth diagnosis of the engine, the service station must have an oscilloscope. This device shows the original signals of the sensors and actuation devices of the vehicle. With a pressure sensor, measuring probes, and modern methods of diagnosis, this tool can help the technician locate complex defects where the scanner cannot. The device is compact, inexpensive, can be quickly connected to the vehicle, and has a minimal number of wires. The information is displayed on a computer or tablet via a WLAN connection.