Diagnostic tool

The diagnostic tool is used to connect an external computer to the ECU (electronic control units) on the vehicle. The technician can communicate and access data from ECU vehicles via a computer. This measuring device enables a very acceptable and fast way of finding the type and place of malfunctions on the vehicle. Through self-diagnosis and monitoring of parameters on the ECU, the technician is guided to the place of failure by checking the correctness of the system and its parts. The diagnostic tool can be brand specific to the vehicle manufacturer or universal for all vehicles.

Bosch KTS diagnostic tool

The computer communicates with the ECU on the vehicle via a diagnostic tool and a diagnostic socket on the vehicle, accesses fault codes, monitors operation and tests elements and systems, adjusts operating parameters, encodes and updates ECU software. The connection of the diagnostic tool to the vehicle diagnostic connector can be done via the diagnostic cable or Bluetooth. Since the entry into force of the OBD II and EOBD protocols, the diagnostic plug has been universal (16-pin).

The diagnostic tool uses a universal protocol to access the ECU on vehicles. The computer must have the appropriate program for the vehicle to start the system diagnosis process. Part of the diagnostic connectors is reserved by law for communication with ECU vehicles, while other connectors can be used by vehicle manufacturers according to their own needs.

OBD/EOBD diagnostic plug

Often, diagnostic tools are multifunctional because, in addition to the diagnostic function, they provide the possibility of measurement and assistance to the technician through the information system.

The measuring device contains a multimeter and an oscilloscope. It is used to measure and display electrical quantities and signals on the vehicle. By analyzing the measured values, the technician can easily determine the correctness of individual elements and systems.

The information system provides service data on vehicles and their parts with a simple and fast search. Today, it is impossible to have all the printed service documentation for all types of vehicles, and the process of browsing that documentation in search of the necessary service information is very slow and uneconomical. That is why the information system has an advantage because it contains all the necessary service information in one place in electronic form. It also guides the technician through the process of testing and detecting the fault. Working on modern vehicles is almost impossible without the use of information systems.

See also

Video recommendation

Air Intake Elements