Engine Controls - System/Component Tests: Introduction

NOTE: Testing procedures not covered in this article require using a Chrysler Diagnostic Readout Box-II (DRB-II). See appropriate G - TESTS W/ CODES article.

Perform all procedures listed in the BASIC TESTING article before testing individual components or systems. Since many computer controlled and monitored components will set a trouble code if they malfunction, it is also recommended that self-diagnosis be performed. See the G - TESTS W/ CODES article in this section.

NOTE: Testing of individual components does not isolate possible shorts or opens in the wiring harness of electronically controlled systems. Use an ohmmeter to isolate shorts or opens. All voltage tests should be performed with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in procedure.