Description

SAE J1939/84 – OBD Communications Compliance Test Cases for Heavy Duty Components and Vehicles

The purpose of SAE J1939/84_201710 is to verify that vehicles and/or components are capable of communicating arequired set of information, in accordance with the diagnostic messages specified in SAE J1939-73, to fulfill the off-boarddiagnostic tool interface requirements contained in the government regulations cited below.

This document describes the tests, methods, and results for verifying diagnostic communications from an off boarddiagnostic tool (i.e., scan tool) to a vehicle and/or component. SAE members have generated this document to serve as aguide for testing vehicles for compliance with ARB and other requirements for emissions-related on-board diagnostic (OBD)functions for heavy duty engines used in medium and heavy duty vehicles.