Troubleshooting Guide

The diagnostic test procedures 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 BEFORE TRYING TO DIAGNOSE A VEHICLE FAULT. There is one HELPFUL INFORMATION section that applies to both the speed control and charging Systems. It is recommended that you review the entire section to become familiar with all new and changed diagnostic procedures.

HOW TO USE THIS SECTION
Diagnosis of faults is done in three basic steps:

1. Visual inspection
- A careful and thorough visual inspection may quickly identify the cause of a malfunction and eliminate the need for additional diagnostic procedures.
- Diagnosis of vehicle faults always starts with the visual inspection. If the fault is not resolved by the visual inspection, perform the diagnostic test(s).

2. Diagnostic tests
- Each specific fault is diagnosed by following a specific test procedure. It is not necessary to perform all of the tests to diagnose an individual fault.
- Always begin diagnostic testing with Test SP-1A or CH-1A. This will direct you to the specific test(s) that must be performed in response to the specific vehicle fault.

3. Verification test
- A verification of system operation must always be performed to ensure that the system is operating normally after the cause of a fault has been found and repaired.

All of the information has been specifically included to assist you to find the cause of a vehicle fault.