Division 3.9.1 F1
For the test vehicle serving as a reference vehicle for the ATCT Family and all vehicles H of the interpolation families within the ATCT Family, the end temperature of the engine coolant shall be measured after soaking at 23 °C for the duration of tsoak_ATCT, with a tolerance of an additional 15 minutes, having beforehand driven the respective Type 1 test at 23 °C. The duration is measured from the end of that respective Type 1 test.