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 - Tests W/Codes - EFI: Introduction

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