The VEGA – Vehicles: Electronics and Automation Management – vocational bachelor’s degree is a 3-year degree designed to train technicians in the field of on-board electronics, including diagnostics and multiplexing. In this context, students are required to use various hardware and software solutions available in the industry, including the Exxotest solution.

A concrete example is the study and characterization of the battery state-of-charge box (BECB) using Muxtrace software and the MuxDiag II USB interface. This box, found on the latest vehicle models, is connected directly to the battery and is designed to provide information on power consumption, such as battery voltage, current supplied, state of charge and battery temperature. This information is sent directly to the intelligent service unit (ISU) via a LIN network.

The principle is as follows: a rheostat is placed in parallel on the battery of a vehicle (Peugeot 508 SW), imposing a load and discharging various current values measured by a clamp ammeter. The Exxotest box is then connected to the corresponding LIN network, and the associated frames recorded using Muxtrace software. The students then have to isolate the identifiers linked to the BECB and go back to the coding of the information, particularly that of the current consumed.