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Requirements for Built-in Service Port for On-Board Diagnostics
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STANDARD published on 1.3.2020
Designation standards: SAE J2744
Publication date standards: 1.3.2020
SKU: NS-988707
Country: American technical standard
Category: Technical standards SAE
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:

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Latest update: 2026-07-17 (Number of items: 2 288 093)
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