Engine Controls - Self Diagnostics: Introduction

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no Diagnostic Trouble Codes (DTC) or only pass codes are present after entering self-diagnostics, see the following:

• For 1995 models, see TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).
• For 1996 models, see TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).
• For 1997 XJR models, see TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).
• For 1997 XJ6 models, see TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).