SAE J 1939-77:2025-11-19
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SAE J 1939-77:2025-11-19

SAE J1939 CAN FD Functional Safety Assurance Data

Summary

This document describes the functional safety (FuSa) assurance data to be included when communicating safety-related A_PDUs using either the Multi-PG service or the FD Transport service within an SAE J1939-22 protocol stack. It specifies the following:
  • The parameters that make up the FuSa assurance information
  • The behavioral requirements when producing and consuming FuSa assurance information
  • The technical requirements for different FuSa profiles intended to meet different application requirements
  • The trailer formats for the different FuSa profiles that can be incorporated into Multi-PG and FD Transport services
This document does not specify the assignment of a FuSa profile to any values of the TOS and TF fields when using the Multi-PG service, or to any value of the AD TYPE field when using the FD Transport service; instead, SAE J1939-22, or an OEM in the manufacturer-specific ranges of these fields, specifies the assignments for these fields.

Technical characteristics

Publisher SAE International
Publication Date 11/19/2025
Page Count 58
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ISBN ---
Weight (in grams) ---
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