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Self-Diagnostic System

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 - SABLE & TAURUS article. If NGS tester responds with CKT914, CKT915 or CKT70=ALL ECUS NO RESP/NOT EQUIP, repair module communications concern. See MODULE COMMUNICATIONS NETWORK - SABLE & TAURUS 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 responds with SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Using NGS tester, perform GEM self-test. Perform appropriate test in accordance with DTC retrieved. See GENERIC ELECTRONIC MODULE DTC INDEX  table. Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - SABLE & TAURUS article. If no DTCs are retrieved, repair by symptom. See SYMPTOM CHART  table under SYSTEM TESTS.

GENERIC ELECTRONIC MODULE DTC INDEX

DTC (1) Description (2) Perform Test
B1302 Delayed Accessory Relay Coil Circuit Failure DTC B1302 
B1304 Delayed Accessory Relay Coil Circuit Short To Voltage DTC B1304 
B1342 ECU Defective (4)
B1398 Driver's Door Window One-Touch Relay Circuit Failure DTC B1398 
B1400 Driver's Door Window One-Touch Relay Circuit Short To Voltage DTC B1400 
B1405 Driver's Door Window Down Circuit Short To Voltage DTC 1405/B1408 
B1408 Driver's Door Window Up Circuit Short To Voltage DTC 1405/B1408 
B1410 (3) Driver's Door Window Motor Circuit Failure DTC B1410 
B1475 Delayed Accessory Relay Contact Short To Voltage DTC B1475 
(1) Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - SABLE & TAURUS article.
(2) After making any repair, repeat Generic Electronic Module (GEM) self-test using NGS tester.
(3) If DTC B1474 is retrieved with any other DTC and B1410, repair DTC B1474 first before repairing DTC B1410. See AUTOLAMP SYSTEMS - SABLE & TAURUS article. If any other DTC is retrieved with B1410, repair those first.
(4) Using NGS tester, retrieve and document all continuous DTCs. Perform Generic Electronic Module (GEM) self-test. If DTC B1342 is retrieved again, replace GEM.
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