The program in your vehicle's main computer system is designed to detect failures then turns on the check engine light to warn the driver, and sets a diagnostic trouble code to identify where the problem is.

This code reading system is an easy-to-use manual that guides you through the process of cycling your vehicle's ignition key and reading the engine's fault code by counting the flashes of the check engine light on your dash.  Once you have identified the trouble code, the manual clearly explains the code definitions and gives detailed probable causes of the trouble code.

Features:

• For most fuel injected 1983 to 1997 Chrysler, Dodge, Plymouth & Jeep vehicles
• Provides code definitions with a detailed overview and probable causes for each code
• Code definitions are clearly explained with detailed probable causes

*EXCLUDES: Lasor/Talon 1.8L, 2.0L Models and 1990 Monaco/Premier Models