本文件描述了根据加利福尼亚州空气资源委员会（CARB）的规定，SAE J1939推荐实施规程的应用，以符合船用尾传动和内侧火花点火发动机的车载诊断故障检测系统要求。这些奥托循环发动机并非源自汽车柴油循环发动机。

This document describes the application of the SAE J1939 recommended practices for compliance with on-board diagnostic malfunction detection system requirements for marine sterndrive and inboard spark ignition engines, as mandated by the California Air Resources Board (CARB). These Otto-cycle engines are not derived from automotive diesel-cycle engines.