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SAE J1978 (APR2002)

Historical Revision

OBD-II Scan Tool

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This SAE Recommended Practice supersedes SAE J1978 FEB1998, and is technically equivalent to ISO/DIS 15031-4:December 14, 2001. This document is intended to satisfy the requirements of an OBD scan tool as required by U.S. On-Board Diagnostic (OBD) regulations. The document specifies: a A means of establishing communications between an OBD-equipped vehicle and external test equipment, b A set of diagnostic services to be provided by the external test equipment in order to exercise the services defined in SAE J1979, c Conformance criteria for the external test equipment.

SDO SAE: SAE International
Document Number J1978
Publication Date April 30, 2002
Language en - English
Page Count 16
Revision Level 200204
Supercedes
Committee
Publish Date Document Id Type View
May 26, 2022 J1978_202205 Revision
April 30, 2002 J1978_200204 Revision
Feb. 1, 1998 J1978_199802 Revision
June 1, 1994 J1978_199406 Revision
March 1, 1992 J1978_199203 Revision