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SAE J1978_200204
- OBD II Scan Tool -- Equivalent to ISO/DIS 15031-4:December 14, 2001
- standard by SAE International, 04/30/2002
- Publisher: SAE
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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; and c. Conformance criteria for the external test equipment.
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