标准编号：ISO/PAS 27145-3:2006
中文名称：道路车辆.全球统一的重型发动机认证规程（WWH-OBD）要求的实施.第3部分：通用信息词典
英文名称：Road vehicles — Implementation of WWH-OBD communication requirements — Part 3: Common message dictionary
发布日期：2006-09
标准范围
ISO/PAS 27145 is intended to become the single communication standard for access to OBD-relatedinformation. To allow for a smooth migration from the existing communication standards to this futureworldwide standardized communication standard, the initial communication concept will be based on CAN. Ina second step, ISO/PAS 27145 will be extended to define the world-wide harmonized OBD communicationstandard based on existing industry communications standards (e.g. Internet Protocol) over Ethernet. Due tothe usage of standard network layer protocols, future extensions to optional physical layers (e.g. wireless) arepossible.This part of ISO/PAS 27145 specifies the implementation of a subset of unified diagnostic services (UDS) asspecified in ISO 14229-1. The diagnostic services are used to communicate all diagnostic data as defined inISO/PAS 27145-2.The subset of unified diagnostic services derives from the requirements stated in the WWH-OBD GTR (WorldWide Harmonised Global Technical Regulations). The common message set defined in this part isindependent of the underlying Transport, Network, Data Link and Physical Layer. This document does notspecify any requirements for the in-vehicle network architecture.This part of ISO/PAS 27145 includes a superset of a modified version of ISO 14229-1. Several significantmodifications are included in this part in order to support the data set of SAE J1939, ISO 15031-5 andISO 15031-6:? ISO/PAS 27145-3 supports a 3-byte Unified Data Identifier format in all services which support a 2-bytedata identifier format in the ISO 14229-1.? ISO/PAS 27145-3 supports a 4-byte Diagnostic Trouble Code format in all services which support a3-byte Diagnostic Trouble Code format in the ISO 14229-1.? ISO/PAS 27145-3 supports a separation of BaseDTC number from a FailureTypeByte including thesymptom of the Diagnostic Trouble Code.This part of ISO/PAS 27145 is designed to provide the basis of unified diagnostic services for future GTRmodules provided by legislation.
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