This part of ISO 11452 specifies a conducted voltage test method and procedure for determining the immunity of electronic components of passenger cars and commercial vehicles, regardless of the propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The method is applied to each individual device under test (DUT) lead and is applicable to all power and output leads, as well as low frequency analogue leads. The method is particularly useful in evaluating DUTs with acoustic or visible display functions. The disturbances considered in this part of ISO 11452 are limited to continuous narrowband electric voltage waveforms