Information Bus: Testing and Inspection: Overview

This Vehicle Communication section is an extension of other 1991 diagnostic procedures. USE THIS SECTION ONLY WHEN INSTRUCTED TO DO SO BY ANOTHER TEST.

The diagnostic test procedures in this manual have been designed specifically for use with Chrysler's DRBII diagnostic read-out box. When performing the tests, it is assumed you are using the DRBII (unless the test tells you to do otherwise).

Diagnostic procedures change every year. New diagnostic systems may be added; carry-over systems may be enhanced. READ THE ENTIRE HELPFUL INFORMATION SECTION IN THIS SECTION BEFORE TRYING TO DIAGNOSE A VEHICLE FAULT. It is recommended that you review the entire section to become familiar with all new and changed diagnostic procedures.