Tests W/Codes - MPFI: Introduction

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

Testing procedures for some of the components are the same for symptom testing as for testing when codes are present. For these testing procedures see the SYMPTOM/TEST MENU in this article.