Engine Controls - Tests W/Codes - 2.5L: Introduction

NOTE: For information on MX-6 2.0L and 626 2.0L, see TESTS W/CODES - 2.0L - MX-6 & 626 2.0L article.

If no faults were found while performing BASIC TESTING , proceed with self-diagnostics. If no fault codes or only pass codes are present after entering self-diagnostics, proceed to appropriate TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).