TSC7203G is a neighbouring number to another of the same manufacturer's standards listed on this site, and the proximity of the two is itself an indication that the manufacturer, like the other large vehicle producers, separates the assessment of a component from the assessment of the vehicle in which it is installed. The separation is not bureaucratic: a component assessed on a bench can be tested early, cheaply and repeatedly, while the vehicle as a whole can only be tested when a representative car exists, and the two tests answer different questions. A supplier to a programme of this manufacturer should expect to support both stages, and to find that the vehicle level work is planned around the availability of vehicles in the correct build configuration rather than around the laboratory's schedule.