Engine Controls - Basic Testing: Summary

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

• For I30, see TESTS W/CODES article.
• For Q45, see G - TESTS W/CODES article.