• J2190

• 2008-10-02

• Vehicle E E System Diagnostic Standards Committee

This SAE Recommended Practice describes the implementation of Enhanced Diagnostic Test Modes,which are intended to supplement the legislated Diagnostic Test Modes defined in SAE J1979. Modes aredefined for access to emission related test data beyond what is included in SAE J1979, and for non-emissionrelated data. This document describes the data byte values for diagnostic messages transmitted betweendiagnostic test equipment, either on-vehicle or off-vehicle, and vehicle electronic control modules. Nodistinction is made between test modes for emission related and non-emission related diagnostics. Thesemessages can be used with a diagnostic serial data link such as described in SAE J1850 or ISO 9141-2.For each test mode, this document includes a functional description of the test mode, request and reportmessage data byte content, and an example if useful for clarification.

• SAE J 2190

• Automotive

• Electronic equipment
• Emissions
• Diagnostics