Explains vocabulary and abbreviations used in Automotive
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The terms key and seed are related to the diagnostic service $27 (securityAccess). The ECU sends a seed that is used by the tester to calculate a key.
KW 1281 is a proprietary diagnostic protocol on the K-line with a byte handshake. Every byte is inverted and transmitted back to the tester by the ECU.
KWP 2000 Light Plus is a "dialect" of the diagnostic service protocol KWP 2000.
This is KWP 2000 with proprietary transport protocols (TP). A specific attribute is the initial negotiation by the communication partners regarding the CAN identifiers and the protocol information header.
KWP Star is a "dialect" of the diagnostic service protocol KWP 2000.
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