Engine Controls - Tests W/Codes - Non-Turbo: Introduction

If no faults were found while performing procedures in the BASIC TESTING article, proceed with SELF-DIAGNOSTIC SYSTEMS. If no fault codes or only pass codes are present, proceed to the TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).

NOTE: All voltage tests should be performed using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in testing procedures.