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 - Basic Testing: Summary

If no faults were found while performing the BASIC DIAGNOSTIC PROCEDURES in this article, proceed to the TESTS W/CODES article. If no hard codes are found performing self-diagnostics, proceed to the TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.), or intermittent diagnostic procedures.