In the future, the high-voltage electrical systems of EVs will be complemented by dual 12V/48V electrical systems. These significantly increase vehicle complexity and are a source of faults in the vehicle's power supply. Comprehensive diagnosis is therefore essential for the safe operation of electric vehicles. This requires analyses of voltages and currents in the low-voltage vehicle electrical system, including the consumers and voltage converters. In this keynote speech, CSM will show how the Vector CSM E-Mobility Measurement System can be used to solve these measurement tasks quickly, safely and precisely.

• Why multivoltage electrical systems add complexity to an EV
• An investigation of which values and phenomena are mandatory
• Which measurement tools allow extensive, multichannel tests in confined spaces
• How comprehensive bus and ECU data acquisition complements analog signals
• How to merge and synchronize measurement data from different sources