Self-Diagnostic System

NOTE: Before performing any testing, see TROUBLE SHOOTING .

Connect New Generation Star (NGS) tester to Data Link Connector (DLC), located behind left side of instrument panel. Using NGS tester, perform data link diagnostic test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in MODULE COMMUNICATIONS NETWORK - FOCUS article. If NGS tester displays CKT914, CKT915, or CKT170=ALL MODULES NO RESP/NOT EQUIP, repair module communications concern. See MODULE COMMUNICATIONS NETWORK - FOCUS article.

If NGS tester displays NO RESP/NOT EQUIP for Generic Electronic Module (GEM), perform TEST A: NO COMMUNICATION WITH GENERIC ELECTRONIC MODULE under SYSTEM TESTS. If NGS tester displays SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Using NGS tester, perform GEM self-test. If DTCs are retrieved, perform appropriate test. See GEM DIAGNOSTIC TROUBLE CODE DEFINITION table. Codes listed in the table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - FOCUS article. If no DTCs are retrieved, repair by symptom. See SYMPTOM INDEX table under SYMPTOM TESTS.

GEM DIAGNOSTIC TROUBLE CODE DEFINITION

DTC ⁽¹⁾

Description

Perform Test

B1300

Power Door Lock Circuit Failure

B1342

ECU Defective

⁽²⁾

B1352

Ignition Key-In Circuit Failure

B1519

Hood Switch Circuit Failure

B2108

Trunk Key Cylinder Switch Failure

B2112

Door Set Switch Circuit Failure

B2116

Door Reset Switch Circuit Failure

B2494

Horn/Panic Output Driver Short To Battery

B2495

Horn/Panic Output Circuit Failure

B2496

Horn/Panic Output Driver Short To Ground

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

⁽²⁾	Using NGS tester, retrieve and record all continuous DTCs. Clear DTCs. Perform Generic Electronic Module (GEM) self-test. If DTC B1342 is retrieved again, replace GEM.