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SAE J2744 (MAR2020)

Current Revision

Requirements for Built-in Service Port for On-Board Diagnostics

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This document presents the requirements for a built-in service port to be used in vehicles intended to comply with Enhanced Evaporative Emissions Requirements. The primary function of the Service Port (Valve Assembly-Evaporative Emission Canister Purge Harness Service) is to provide non-destructive access to the evaporative emissions system to enable testing of the integrity of the system. The Service Port is used to introduce air pressure or fuel vapors into, or evacuates them out of, the system. This access may be used for the following evaluations: • Evaporative System Certifications Canister Loading and Purging • End-of-line Testing System Integrity • Service (e.g. OBD MIL on) Leak Location and Repair Verification • In-Use Compliance Testing Canister Loading and Purging • Inspection/Maintenance Testing System Integrity and Purge Check

SDO SAE: SAE International
Document Number J2744
Publication Date March 11, 2020
Language en - English
Page Count 9
Revision Level 202003
Supercedes
Committee
Publish Date Document Id Type View
March 11, 2020 J2744_202003 Revision
Aug. 11, 2008 J2744_200808 Revision