LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2001 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Modules >> Self-Diagnostic System >> Remote Keyless Entry System Diagnostic System Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remote Keyless Entry System Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC). DLC is located on lower left side of instrument panel, near steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST A: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition switch to RUN position. Using scan tool, attempt to establish communication with Dash Integration Module (DIM), Driver's Door Module (DDM), Rear Integration Module (RIM) and Remote Function Actuator (RFA). If scan tool communicates with all modules, go to next step. If scan tool does not communicate with all modules, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Using scan tool, select DISPLAY DTCs function for the DIM, DDM, RIM and RFA. If scan tool displays any DTCs, go to next step. If scan tool does not display any DTCs, repair remote keyless entry system by symptom. See appropriate REMOTE KEYLESS ENTRY SYSTEMS article.
  4. If scan tool does not display DTCs U1161, U1162, U1163 or U1170 (Bonneville only), go to next step. If scan tool displays DTCs U1161, U1162, U1163 or U1170 (Bonneville only), perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  5. If scan tool does not display any DTCs beginning with "U", go to next step. If scan tool displays any DTCs beginning with "U", go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  6. If scan tool does not display DTCs B1000, B1007, B1009 or B1010 (Bonneville only), go to next step. If scan tool displays DTCs B1000, B1007, B1009 or B1010 (Bonneville only), perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  7. If scan tool displays DTC B1327, perform appropriate test. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If scan tool does not display DTC B1327, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
scientia non olet · About LEMON Manuals