Engine Controls - Self-Diagnostics: Introduction
NOTE:
For self-diagnostic information on I30, refer to Maxima in Nissan SELF-DIAGNOSTICS - INTRODUCTION article. For self-diagnostic information on QX4, refer to Pathfinder in Nissan SELF-DIAGNOSTICS - INTRODUCTION article.
NOTE:
Electronic Concentrated Control System (ECCS) control module is referred to as Engine Control Module (ECM).
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. Using scan tool, review and record all DTC and freeze-frame information available. If no DTCs are present after entering self-diagnostics, proceed to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).