logo

Standards Manage Your Business

We Manage Your Standards

SAE

SAE J1978-1_202312 : 2023

OBD-II Scan Tool: First Generation Protocols

Standard Details

SAE J1978-1 specifies a complementary set of functions to be provided by an OBD-II scan tool. These functions provide complete, efficient, and safe access to all regulated OBD (on-board diagnostic) services on any vehicle which complies to SAE J1978-1 The SAE J1978-1 content of this document is intended to satisfy the requirements of an OBD-II scan tool as required by current U.S. on-board diagnostic (OBD) regulations. This document specifies: A means of establishing communications between an OBD-equipped vehicle and an OBD-II scan tool. A set of diagnostic services to be provided by an OBD-II scan tool in order to exercise the services defined in SAE J1979 and SAE J1979-2. The presentation of the SAE J1978 document family, where SAE J1978-1 covers first generation protocol functionality defined in SAE J1979, and SAE J1978-2 covers second generation protocol functionality defined in SAE J1979-2. The SAE J1978 document family does not preclude the inclusion of additional capabilities or functions in an OBD-II scan tool. However, it is the responsibility of the OBD-II scan tool designer to ensure that no such capability or function can adversely affect either an OBD-equipped vehicle, which may be connected to the OBD-II scan tool, or to the OBD-II scan tool itself. Differences in the SAE J1978-1 requirements are highlighted by old italic text in the technical requirements sections of this document.

General Information

Status : Issued
Standard Type: Main
Document No: SAE J1978-1_202312 : 2023
Document Year: 2023
Pages: 37

Life Cycle

Currently Viewing

Issued
SAE J1978-1_202312 : 2023
Knowledge Corner

Expand Your Knowledge and Unlock Your Learning Potential - Your One-Stop Source for Information!

© Copyright 2024 BSB Edge Private Limited.

Enquire now +