Engine Controls - Tests W/Codes - 3.8L: Introduction: Notes
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See the COMPUTER RELEARN PROCEDURES
article in the GENERAL INFORMATION section before disconnecting battery.
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES in the BASIC TESTING - 3.8L article, proceed with self-diagnostics. If no Diagnostic Trouble Codes (DTCs) are present after entering self-diagnostics, perform TEST NTC-1A for engine diagnosis. If after performing TEST NTC-1A test, problem is not identified and repaired, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).