This test simulates varying temperatures with electrical operation of the DUT, e.g. during the use of thesystem/components at changing ambient temperature. If a system/component is exposed to hot-soaktemperatures (e.g. engine-mounted systems/components), an additional short temperature peak is addedduring the high-temperature phase of the profile to ensure proper function during short temperature peaks.The electrical operation is switched off during phases of decreasing temperature in order to avoid electricalheat dissipation of the system/component, which would inhibit reaching Tmin inside the system/component.Failure mode is electrical malfunction during temperature change.