J2744_200808 Requirements for Built-In Service Port for On Board Diagnostics

Issued

08/11/2008

Features
Issuing Committee
Scope
Content
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
Rationale
Content
This document was originated by the USCAR/LEP Evaporative Emission Testing Group to provide service access to automotive evaporative emission systems in a manner that would not damage those systems. To be effective it is essential that this service port be standardized.
Meta TagsDetails
DOI
https://doi.org/10.4271/J2744_200808
Pages
8
Citation
SAE International Recommended Practice, Requirements for Built-In Service Port for On Board Diagnostics, SAE Standard J2744_200808, Issued August 2008, https://doi.org/10.4271/J2744_200808.
Additional Details
Publisher
Published
Aug 11, 2008
Product Code
J2744_200808
Content Type
Recommended Practice
Status
Issued
Language
English

Revisions