OTX (Open Test Sequence eXchange, ISO 13209) is an international standard for the formal description of diagnostic and test sequences in the automotive industry. Thereby, it complements the ODX format used to exchange diagnostic data.
The OTX format is relevant to the areas of development, production and service by enabling the exchange of diagnostic procedures between process partners with different platforms and diagnostic testers. Thus, procedures can easily be reused and extended if necessary.
With the sequence language OTX, diagnostic sequences can be displayed both at the specification level and at the same time contain enough implementation details so that they can also be performed. Moreover, OTX directly supports the variant management, whereby the adaptation of processes to, for example, different variants of a vehicle model is simplified significantly.