Self-Diagnostic System

NOTE: Perform TROUBLE SHOOTING before beginning self-diagnostics.

Connect New Generation Star (NGS) tester to Data Link Connector (DLC), located beneath instrument panel. Using NGS tester, perform data link diagnostics test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in MODULE COMMUNICATIONS NETWORK - CONTINENTAL article. If NGS tester responds with CKT914, CKT915 or CKT70=ALL ECUS NO RESP/NOT EQUIP, repair module communications concern. See MODULE COMMUNICATIONS NETWORK - CONTINENTAL article. If NGS tester displays NO RESP/NOT EQUIP for Driver's Door Module (DDM), perform TEST A: NO COMMUNICATION WITH DRIVER'S DOOR MODULE (DDM) under SYSTEM TESTS. If NGS tester displays NO RESP/NOT EQUIP for Lighting Control Module (LCM), perform TEST B: NO COMMUNICATION WITH LIGHTING CONTROL MODULE (LCM) under SYSTEM TESTS.

If NGS tester responds with SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Using NGS tester, perform DDM and LCM self-test. Perform appropriate test in accordance with DTC retrieved. See DRIVER'S DOOR MODULE (DDM) DTC INDEX and/or LIGHTING CONTROL MODULE (LCM) DTC INDEX table. Codes listed in these tables are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - CONTINENTAL article. If no DTCs are retrieved, repair by symptom. See SYMPTOM INDEX table under SYSTEM TESTS.

DRIVER'S DOOR MODULE (DDM) DTC INDEX

DTC ⁽¹⁾

Description

Perform Test

B1342

ECU Defective

⁽²⁾

B1549

Power Window Master Switch Short To Voltage

⁽¹⁾	Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - CONTINENTAL article.

⁽²⁾	Using NGS tester, retrieve and document all continuous. Perform Driver's Door Module (DDM) self-test. If DTC B1342 is retrieved again, replace DDM.

LIGHTING CONTROL MODULE (LCM) DTC INDEX

DTC ⁽¹⁾

Description

Perform Test

B1342

ECU Defective

⁽²⁾

⁽¹⁾	Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - CONTINENTAL article.

⁽²⁾	Using NGS tester, retrieve and document continuous DTCs. Clear all DTCs. Perform Lighting Control Module (LCM) self-test. If DTC B1342 is retrieved again, replace LCM.