Engine Controls - System/Component Tests - Gasoline: Introduction

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

Before testing individual components or systems, perform basic diagnostic procedures in BASIC TESTING - GASOLINE article in the ENGINE PERFORMANCE section. Since many computer controlled and monitored components set a fault message if they malfunction, also perform SELF-DIAGNOSTICS in appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section.

NOTE: Testing of individual components does not isolate possible shorts or opens in wiring harness of electronically controlled systems. Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance unless otherwise instructed in procedure. Use an ohmmeter to isolate wiring harness shorts or opens.