标准摘要
[中文适用范围]： ISO 14230 的这一部分规定了关键字协议 2000 数据链路的要求，在该数据链路上将一个或多个车载电子控制单元连接到车外测试仪以执行诊断功能。 ISO 14230 的这一部分规定了实施 ISO 14229 中规定的诊断服务的要求，包括 — 服务标识符的字节编码和十六进制值； ——诊断服务请求和响应参数的字节编码； ——标准参数的十六进制值。 ISO 14230 本部分适用的车辆环境可能由临时连接到车载诊断数据链路的单个测试仪和直接或间接连接的多个车载电子控制单元组成（见图 2）。 [外文原描述]： This part of ISO 14230 specifies the requirements for the Keyword Protocol 2000 data link on which one or several on-vehicle Electronic Control Units are connected to an off-board tester in order to perform diagnostic functions. This part of ISO 14230 specifies the requirements of the implementation of the Diagnostic Services specified in ISO 14229, including - byte-encoding and hexadecimal values for the service identifiers; - byte-encoding for the parameters of the diagnostic service requests and responses; - hexadecimal values for the standard parameters. The vehicle environment to which this part of ISO 14230 applies may consist of a single tester that may be temporarily connected to the on-vehicle diagnostic data link and several on-vehicle Electronic Control Units connected directly or indirectly.
英文名称Road vehicles — Diagnostic systems — Keyword Protocol 2000 — Part 3: Application layer