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AUTOLOCK Does Not Operate Properly

WARNING: This page is about a different car, the 1997 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect NGS tester, following manufacturer's instructions. Select DIAGNOSTIC DATA LINK. Select DDM-DRIVER DOOR MODULE. Select DIAGNOSTIC TEST MODE. Retrieve CONTINUOUS DTCs. See MODULE COMMUNICATIONS NETWORK article. If no DTCs begin with letter "U", go to next step. If any DTC begins with letter "U", see MODULE COMMUNICATIONS NETWORK article.
  2. Test-drive vehicle, with transmission selector set to Drive, at greater than 5 MPH. If not all doors lock, park vehicle, then go to next step. If all doors lock, park vehicle, then go to step 9).
  3. Turn ignition on. Press MENU button on instrument panel until message center displays AUTOLOCKS. If feature is on, go to next step. If feature is not on, press SELECT button on NGS tester to ON position, then go back to step 2).
  4. Stop vehicle. If courtesy lights are not on, go to next step. If courtesy lights are on, test door-ajar switches and associated wiring for short or open circuits. See WIRING DIAGRAM  .
  5. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select DDM-DRIVER DOOR MODULE. Select PID/DATA MONITOR AND RECORD. Select PID D_DR_DD (driver door ajar status). Press START button. Ensure all doors are closed. If PID indicates door is not ajar, go to next step. If PID indicates door is ajar, inspect Dark Blue wire from driver's door ajar switch for short to ground. Repair as necessary, then retest system.
  6. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select DDM-DRIVER DOOR MODULE. Select PID/DATA MONITOR AND RECORD. Select PID P_DR_DD (passenger door ajar status). Press START button. Ensure all doors are closed. If PID indicates door is ajar, go to next step. If PID does not indicate door ajar, go to step 8).
  7. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select LCM-LIGHTING CONTROL MODULE. Select PID/DATA MONITOR AND RECORD. Select PID P_DR_LC (passenger door ajar status). Press START button. Ensure all doors are closed. If PID does not indicate door ajar, go to MODULE COMMUNICATIONS NETWORK article. If PID indicates door ajar, inspect Black/Orange wire from passenger's door ajar switch for short to ground. Repair as necessary, then retest system.
  8. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select LCM-LIGHTING CONTROL MODULE. Select PID/DATA MONITOR AND RECORD. Select PID D_SEAT (driver seat occupied status). Sit in driver's seat. Press START button. If PID indicates driver's seat is occupied, temporarily substitute known good DDM, then retest system. If PID does not indicate driver's seat is occupied, inspect White wire for open circuit between driver's seat occupied switch and Lighting Control Module (LCM) located behind left side of instrument panel. If wire is okay, test driver's seat switch. See WIRING DIAGRAM  . Retest system.
  9. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select DDM-DRIVER DOOR MODULE. Select PID/DATA MONITOR AND RECORD. Select PID D_DR_DD (driver door ajar status). Press START button. Open driver's door. If PID indicates driver's door is ajar, go to next step. If PID does not indicate door is ajar, inspect Dark Blue wire from driver's door ajar switch for open. Repair as necessary, then retest system.
  10. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select DDM-DRIVER DOOR MODULE. Select PID/DATA MONITOR AND RECORD. Select PID P_DR_DD (passenger door ajar status). Press START button. Open each passenger door. If PID does not indicate the door is ajar, go to next step. If PID indicates each passenger's door is ajar, go to step 12).
  11. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select LCM-LIGHTING CONTROL MODULE. Select PID/DATA MONITOR AND RECORD. Select PID P_DR_LC (passenger door ajar status). Press START button. Open each passenger door. If PID does not indicate each passenger door is ajar, inspect Black/Orange wire for open circuit between passenger door ajar switch and LCM. Repair as necessary, then retest system. If PID indicates each passenger door is ajar, go to MODULE COMMUNICATIONS NETWORK article.
  12. Connect NGS tester. Select DIAGNOSTIC DATA LINK. Select LCM-LIGHTING CONTROL MODULE. Select PID/DATA MONITOR AND RECORD. Select PID D_SEAT (driver seat occupied status). Press START button. Sit in driver's seat. If PID does not indicate that driver's seat is occupied, no problem is indicated at this time. If PID indicates driver's seat is occupied, inspect White wire for short to ground between driver's seat occupied switch and LCM. If wire is okay, test driver's seat switch. See WIRING DIAGRAM  . Replace switch if necessary, retest system.
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