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Home >> Lincoln >> 2000 >> Town Car Executive >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Lock System & Remote Keyless Entry Systems >> Self-Diagnostic System >> Preliminary Procedure

Preliminary Procedure

  1. The remote keyless entry system utilizes a self-diagnostic system which may store a Diagnostic Trouble Code (DTC) if a problem exists in the system. DTCs may be retrieved using New Generation Star (NGS) tester and Data Link Connector (DLC) for diagnosis of system.
  2. Connect NGS tester to DLC located below instrument panel. Using NGS tester, perform DATA LINK DIAGNOSTIC TEST. If NGS tester displays CKT 914, CKT 915 or CKT 70=ALL ECUS NO RESP/NOT EQUIP, see appropriate MODULE COMMUNICATIONS NETWORK article to diagnosis network concern. If NGS tester displays NO RESP/NOT EQUIP for Driver Door Module (DDM), perform TEST B: NO COMMUNICATION WITH DDM  under SYSTEM TESTS. If NGS tester displays NO RESP/NOT EQUIP for Lighting Control Module (LCM), perform TEST A: NO COMMUNICATION WITH LCM  under SYSTEM TESTS.
  3. If NGS tester displays SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Perform self-test diagnostics for DDM and LCM using NGS tester. If DDM DTCs are retrieved, see DRIVER DOOR MODULE (DDM) DTC INDEX  table to continue diagnosis. If LCM DTCs are retrieved, see LIGHTING CONTROL MODULE (LCM) DTC INDEX  table to continue diagnosis. If no DTCs are retrieved, perform appropriate symptom test under SYSTEM TESTS  .
DRIVER DOOR MODULE (DDM) DTC INDEX

DTC (1) Description Proceed To Test
B1322 LF Door Ajar Circuit Short To Ground F 
B1342 ECU Defective (2)
B1396 Power Door Lock Circuit Short To Battery E 
B1397 Power Door Unlock Circuit Short To Battery E 
B1553 Decklid Release Circuit Short To Battery C 
B1566 Door Ajar Circuit Short To Ground F 
B2425 Remote Keyless Entry Out Of Synchronization K 
(1) Codes listed are for testing in this article only. For a complete list of DTCs, see MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
(2) Replace driver door module and retest system operation.
LIGHTING CONTROL MODULE (LCM) DTC INDEX

DTC (1) Description Proceed To Test
B1334 Decklid Ajar Rear Door Circuit Short To Ground C 
B1342 ECU Defective (2)
(1) Codes listed are for testing in this article only. For a complete list of DTCs, see MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
(2) Replace Lighting Control Module (LCM) and retest system operation.