Self-Diagnostic System

The remote keyless entry system utilizes a self-diagnostic system which may store a Diagnostic Trouble Code (DTC) if a problem exists in the system. DTCs may be retrieved using a New Generation Star (NGS) tester or other OBD-II compliant scan tool for diagnosis of system. Before performing any testing, see TROUBLE SHOOTING  . If all components are okay, connect NGS tester to DLC located behind left side of instrument panel. Perform DATA LINK DIAGNOSTICS TEST. If scan tool displays CKT914, CKT915, or CKT170=ALL MODULES NO RESP/NOT EQUIP see appropriate MODULE COMMUNICATIONS NETWORK article to diagnose network concern. If scan tool displays NO RESP/NOT EQUIP for Central Security Module (CSM), perform TEST A: NO COMMUNICATION WITH CENTRAL SECURITY MODULE  under SYSTEM TESTS. If scan tool displays SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. If DTCs are retrieved, see CSM DIAGNOSTIC TROUBLE CODE DEFINITION  table to continue diagnosis. If no DTCs are retrieved, see appropriate SYMPTOM INDEX  table under SYSTEM TESTS. Codes listed in the table are only for testing covered in this article. For complete DTC listing. See appropriate MODULE COMMUNICATIONS NETWORK article.