Self-Diagnostic System: Self-Diagnostics
NOTE:
The power window system utilizes a self-diagnostic system which may store a Diagnostic Trouble Code (DTC) if a problem exists in system. DTCs may be retrieved using New Generation Star (NGS) tester, or equivalent scan tool, connected to Data Link Connector (DLC).
Connect NGS tester to DLC located below center of instrument panel. Using NGS tester, perform data link diagnostic test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article. If NGS tester displays CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, repair module communication concern. See MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article. If NGS tester displays NO RESP/NOT EQUIP for Generic Electronic Module (GEM), perform TEST A: NO SCAN TOOL 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 are retrieved, perform appropriate test. See GEM DTC TEST INDEX
table. If no DTCs are retrieved, perform appropriate test based on symptom. See SYMPTOM INDEX
table under SYSTEM TESTS. For GEM DTCs not covered in this article, see MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article.
GEM DTC TEST INDEX
| DTC |
Description |
Perform Test |
| B1302 |
Accessory Delay Relay Coil Circuit Failure |
B |
| B1304 |
Accessory Delay Relay Coil Circuit Short To Power |
B |
| B1313 |
Battery Saver Relay Coil Circuit Failure |
B |
| B1315 |
Battery Saver Relay Coil Circuit Short To Power |
B |
| B1342 |
ECU Defective |
|
| B1398 |
Driver Window One-Touch Window Relay Circuit Failure |
D |
| B1400 |
Driver Power Window One-Touch Window Relay Circuit Short To Power |
D |
| B1405 |
Driver Power Window Down Circuit Short To Power |
C |
| B1410 |
Driver Power Window Motor Circuit Failure |
C |