October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Engine Controls - Self-Diagnostics - Introduction: Introduction

Perform all steps in BASIC DIAGNOSTIC PROCEDURES article. If no fault is found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no diagnostic trouble codes or only pass codes (system functioning properly) are found during self-diagnostics, proceed to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.