Normal Mode Code Retrieval

Connect scan tester to Data Link Connector (DLC) No. 3. See Fig 1. DLC No. 3 is located in fuse box at lower left of instrument panel. Turn ignition on with engine off. Turn scan tester on. Using scan tester manufacturer's instructions, check for trouble codes and freeze frame data.
If scan tester displays UNABLE TO CONNECT TO VEHICLE, DLC No. 3 must be checked. See DLC NO . 3 INSPECTION under SCAN TESTER PROBLEMS. If scan tester does not display UNABLE TO CONNECT TO VEHICLE, go to next step.
Record any trouble codes and freeze frame data displayed for system diagnosis. If driveability problem exists and no codes are present, go to TESTS W/O CODES article for diagnosis by symptom.
If any trouble codes are present, perform appropriate diagnostic test. See TROUBLE CODE IDENTIFICATION table. For more information on freeze frame data, see FREEZE FRAME DATA under INTRODUCTION. For information on 2-trip detection logic codes, see TWO-TRIP DETECTION LOGIC under INTRODUCTION.
After repairs for trouble code have been completed, trouble code must be cleared from ECM memory. See CLEARING TROUBLE CODES .

Fig 1: Connecting Scan Tester To DLC No. 3