OBD Testing Flow Chart

This document is a guideline in the form of a flowchart to explain the logical steps that could be used by a Test Analyzer System (TAS) when performing the OBD portion of an Inspection and Maintenance test in the United States.

OBD I/M Flowchart ver 8.3

The document below explains the callout tags placed within the above flowchart.

callout attachment

Also in relation to this document we have posted the OBD II Anomaly Spreadsheet.  You can find it here.