Retrieving Diagnostic Trouble Codes

Connect New Generation Star (NGS) tester to Data Link Connector (DLC) and retrieve charging system Diagnostic Trouble Codes (DTCs). See POWERTRAIN CONTROL MODULE (PCM) DIAGNOSTIC TROUBLE CODE (DTC) INDEX  . If any other Diagnostic Trouble Code (DTC)s are present, see SELF-DIAGNOSTICS - EEC-V article in ENGINE PERFORMANCE to diagnose fault. After repair is complete, clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  . If no DTCs are present, repair by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.