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OBD Communications Compliance Test Cases for Heavy-Duty Components and Vehicles
Network Layer
Serial Control and Communications Heavy-Duty Vehicle Network - Top-Level Document
CAN FD Data Link Layer
Vehicle Application Layer
Application Layer - Diagnostics
Data Link Layer
Physical Layer, 500 kbit/s
On Board Diagnostics Implementation Guide
SAE J1939-03 provides requirements and guidelines for the implementation of on-board diagnostics (OBD) on heavy duty vehicles (HDV) using the SAE J1939 family of standards. The guidelines identify where the necessary information to meet OBD regulations may be found among the SAE J1939 document set. Key requirements are identified here to ensure the interoperability of OBD scan tools across individual OBD-compliant vehicles.
Market-defined regulations permit the use of SAE J1939 to meet OBD requirements. Implementers are cautioned to obtain and review the specific regulations for the markets where their products are sold. This document is focused on guidelines and requirements to satisfy the State of California Air Resources Board (CARB), the authors of 13 CCR 1971.1, United States Environmental Protection Agency, Euro IV and V requirements from European Commission directives, and UN/ECE WP 29 GRPE WWH OBD Global Technical Regulation (GTR).
On-Highway Equipment Control and Communication Network
Data Link Layer
Application - Configurable Messaging
CAN FD Data Link Layer
Application Layer - Generator Sets and Industrial
CAN FD Data Link Layer
Off-Board Diagnostic Connector
Physical Layer, 250 Kbps, Twisted Shielded Pair
This document defines a physical layer having a robust immunity to EMI and physical properties suitable for harsh environments.
CAN controllers are available which support the CAN Flexible Data Rate Frame Format. These controllers, when used on SAE J1939-11 networks, must be restricted to use only the Classical Frame Format compliant to ISO 11898-1:2015.
These SAE Recommended Practices are intended for light- and heavy-duty vehicles on- or off-road as well as appropriate stationary applications which use vehicle derived components (e.g., generator sets). Vehicles of interest include but are not limited to: on- and off-highway trucks and their trailers; construction equipment; and agricultural equipment and implements.