Yes, it uses K-line (Pin 7 - ISO 9141-2 K Line and Pin 15 - ISO 9141-2 L Line = European protocol) but it is the ISO9141-2 protocol (European one) and in the datasheet of the OBD2 Uart adapter V2.1 you say that the adapter supports the ISO9141-2 protocol, is it true? So I do not understand the question about the k-line.
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Contents.OBD-II ISO 14230-2 Protocol SpecificationThis document describes the OBD-II ISO 14230-2 serial interface protocol. It has been compiled fromvarious public internet sources. I have been successful building an ODB interface with this information,but no guarantee can be given that this information is correct.
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January 2023
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