Section 40 (Engine Controls - Tests W/Codes - 6.8L): Introduction

WARNING: This page is about a different variant/trim than selected.

NOTE: Vehicles use EEC-V (104-pin PCM) system.

Perform all BASIC DIAGNOSTIC PROCEDURES in BASIC TESTING - 6.8L article. If no fault is found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no diagnostic trouble codes or only pass codes are found during self-diagnostics, proceed to TESTS W/O CODES - GASOLINE article for diagnosis by symptom.