Self-Diagnostic System

NOTE: For further information of self-diagnostic system, see MODULE COMMUNICATIONS NETWORK - EXPLORER & MOUNTAINEER article.

For preliminary testing, see TROUBLE SHOOTING . If problem is not found, check Generic Electronic Module (GEM) for Diagnostic Trouble Codes (DTCs). Connect New Generation Star (NGS) tester, or equivalent scan tool, to Data Link Connector (DLC) located below center of instrument panel. Using NGS tester, perform DATA LINK DIAGNOSTIC TEST. If NGS tester displays CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, see MODULE COMMUNICATIONS NETWORK - EXPLORER & MOUNTAINEER article to diagnose network concern. If NGS tester displays NO RESP/NOT EQUIP for GEM, perform TEST J: NO COMMUNICATION WITH GEM 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 GEM DTCs related to the concern are retrieved, see GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE TEST INDEX table to continue diagnosis. If no DTCs related to the concern are retrieved, diagnose by symptom. See SYMPTOM INDEX table under SYSTEM TESTS. For GEM DTCs not covered in this article, see MODULE COMMUNICATIONS NETWORK - EXPLORER & MOUNTAINEER article.

GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE TEST INDEX

DTC ⁽¹⁾

Description

Perform Test

B1302

Accessory Delay Relay Coil Circuit Failure

B1304

Accessory Delay Relay Coil Circuit Open Or Short To Voltage

B1313

Battery Saver Relay Coil Circuit Failure

B1315

Battery Saver Relay Coil Circuit Short To Voltage

B1342

GEM Defective

⁽²⁾

B1398

Power Window One-Touch Down Relay Circuit Failure

⁽³⁾

B1400

Power Window One-Touch Down Relay Coil Circuit Short To Voltage

⁽³⁾

B1404

Driver's Door Power Window Down Circuit Open

⁽³⁾

B1405

Driver's Door Power Window Down Circuit Short To Power

⁽³⁾

B1410

Driver's Door Power Window Motor Circuit Failure

⁽³⁾

B1475

Accessory Delay Relay Contacts Short To Voltage

⁽³⁾

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

⁽²⁾	Replace GEM. See GENERIC ELECTRONIC MODULE (GEM) under REMOVAL & INSTALLATION.

⁽³⁾	Repair by symptom. See SYMPTOM INDEX table under SYSTEM TESTS.