How To Use This Guide

The Emission Control Applications Guide is a quick reference guide designed to help you, the professional automotive technician, identify emission control related components. This manual may be used after first examining the Vehicle's Underhood Emission Control System (VECI) label and tune-up, vacuum routing and modification authorization labels (if applicable). Always check for existing Technical Service Bulletins (TSBs) and emission recalls. The Emission Control Applications Guide is divided into the following sections:

• General Information:  Emission Control Visual Inspection Procedures (Gas and Diesel), Diagnostic Connector Locations, State Emission Standards (Gas and Diesel), Maintenance Reminder Reset Procedures, Engine Displacement Conversion Table, Traction Control Disable, and Emission Control Abbreviations
• EGR Function Testing  (Gas and Diesel)
• Base Ignition Timing Specifications 
• EPA Emission Recalls  (Gas and Diesel)
• OBD II Testability Issues 
• Emission Control Applications  (Gas and Diesel)