This Technical Information Report defines the diagnostic communication protocol Keyword Protocol 1281 (KWP1281). This document should be used in conjunction with SAE J2534-2 in order to fully implement the communication protocol in an SAE J2534 interface. Some Volkswagen of America and Audi of America vehicles are equipped with ECUs, in which a KWP1281 proprietary diagnostic communication protocol is implemented. The purpose of this document is to specify the KWP1281 protocol in enough detail to support the requirements necessary to implement the communication protocol in an SAE J2534 interface device.
SAE J2818-2008 Referenced Document
ISO 14230-2:1999 Road vehicles - Diagnostic systems - Keyword protocol 2000 - Part 2: Data link layer
ISO 9141-2:1994 Road vehicles; diagnostic systems; part 2: CARB requirements for interchange of digital information
ISO 9141:1989 Road vehicles - Diagnostic systems - Requirements for interchange of digital information