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Self-Diagnostic System

NOTE: Before beginning self-diagnostics, perform TROUBLE SHOOTING  .
NOTE: After any repairs are complete, ensure all component are properly installed and all harness connectors are connected properly and repeat data link diagnostic test.

Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below left side of instrument panel, to right of steering column. Using NGS tester, perform data link diagnostics test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in MODULE COMMUNICATIONS NETWORK - LS article. If NGS tester responds with CKT914, CKT915 or CKT70=ALL ECUS NO RESP/NOT EQUIP, repair module communications concern. See MODULE COMMUNICATIONS NETWORK - LS article. If NGS tester displays NO RESP/NOT EQUIP for Front Electronics Module (FEM), perform TEST A: NO COMMUNICATION WITH FRONT ELECTRONICS MODULE  under SYSTEM TESTS. If NGS tester displays NO RESP/NOT EQUIP for Rear Electronics Module (REM), perform TEST B: NO COMMUNICATION WITH REAR ELECTRONICS MODULE  under SYSTEM TESTS. If NGS tester displays NO RESP/NOT EQUIP for Driver's Door Module (DDM), perform TEST C: NO COMMUNICATION WITH DRIVER'S DOOR MODULE  under SYSTEM TESTS.

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

FRONT ELECTRONICS MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC (1) Description Perform Test
B1342 ECU Defective (2)
B2312 Passenger's Mirror Horizontal Feedback Potentiometer Circuit Failure E 
B2316 Passenger's Mirror Vertical Feedback Potentiometer Circuit Failure E 
(1) Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - LS article.
(2) Using NGS tester, retrieve and document continuous DTCs. Clear all DTCs. Perform Front Electronics Module (FEM) self-test. If DTC B1342 is retrieved again, replace FEM.
REAR ELECTRONICS MODULE DIAGNOSTIC TROUBLE CODE 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 - LS article.
(2) Using NGS tester, retrieve and document continuous DTCs. Clear all DTCs. Perform Rear Electronics Module (REM) self-test. If DTC B1342 is retrieved again, replace REM.
DRIVER'S DOOR MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC (1) Description Perform Test
B1342 ECU Defective (2)
B1530 Memory Set Switch Circuit Short To Ground G 
B1534 Memory 1 Switch Circuit Short To Ground G 
B1538 Memory 2 Switch Circuit Short To Ground G 
B2320 Driver's Mirror Horizontal Feedback Potentiometer Circuit Failure E 
B2324 Driver's Mirror Vertical Feedback Potentiometer Circuit Failure E 
B2336 Mirror Switch Assembly Circuit Failure E 
(1) Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - LS article.
(2) Using NGS tester, retrieve and document continuous DTCs. Clear all DTCs. Perform Driver's Door Module (DDM) self-test. If DTC B1342 is retrieved again, replace DDM.
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