Tests W/Codes - MPFI: Summary
If no hard fault codes are displayed, perform TEST Q. If only Code 88 is present, perform TEST NB. If there are no codes, perform KOEO SELF-TEST. If symptom is still present proceed to TESTS W/O CODES article for diagnosing by symptom (i.e. ROUGH IDLE, NO START, etc.), or for intermittent diagnosis procedures. Also see I - SYS/COMP TESTS article to test systems and/or components.