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Test D: Delayed Accessory Feature Does Not Turn Off

  1. Using New Generation Star (NGS) tester, monitor Driver's Door Module (DDM) PIDs D_DR_DD and P_DR_DD. Open and close doors several times. If PID values agree with door positions, go to next step. If PID values do not agree with door positions, go to step  9 .
  2. Test accessory delay/power window relay. See ACCESSORY DELAY/POWER WINDOW RELAY  under COMPONENT TESTS. If relay is okay, go to next step. If relay is defective, replace relay.
  3. Remove accessory delay/power window relay from central junction box. Measure resistance between ground and accessory delay/power window relay harness connector terminal No. 86 (Pink wire). See Figure . Wait 10 minutes. If resistance is 10 k/ohms or more after 10 minutes, go to next step. If resistance is less than 10 k/ohms after 10 minutes, go to step  6 .
  4. Measure resistance between ground and accessory delay/power window relay harness connector terminal No. 86 (Pink wire). Open driver's door. If resistance is 10 k/ohms or more after opening driver's door, go to next step. If resistance is less than 10 k/ohms after opening driver's door, go to step  8 .
  5. Disconnect DDM 4-pin harness connector C522. DDM is located behind door panel, in upper front corner of driver door. Measure voltage between ground and DDM harness connector C522 terminal No. 3 (Yellow/Light Green wire). If voltage exists, repair short to voltage in Yellow/Light Green wire between DDM and accessory delay/power window relay. If voltage does not exist, replace DDM.
  6. Using New Generation Star (NGS) tester, perform Lighting Control Module (LCM) self-test. Retrieve and record LCM continuous DTCs. If no LCM DTCs are retrieved, go to next step. If any LCM DTCs are retrieved, perform appropriate test. See LIGHTING CONTROL MODULE DTC INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS in MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
  7. Remove accessory delay/power window relay from central junction box. Disconnect LCM harness connector C220. LCM is located under center of instrument panel, to right of steering column. Measure resistance between ground and delayed accessory relay harness connector terminal No. 86 (Pink wire). See Figure . If resistance is 10 k/ohms or more, go to next step. If resistance is less than 10 k/ohms, repair short to ground in Pink wire between central junction box and LCM.
  8. Connect LCM harness connector C220 and accessory delay/power window relay. Using NGS tester, access LCM PID IGN_LCM. If PID indicates OFF, replace DDM. If PID does not indicate OFF, replace LCM.
  9. Use results from DDM self-test performed in self-diagnostics. If no DDM DTCs were retrieved, go to next step. If any DDM DTCs are retrieved, perform appropriate test. See DRIVER'S DOOR MODULE DTC INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS in MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
  10. Remove passenger's and driver's door ajar switches. Measure resistance between door ajar switch terminals with switch in open and closed positions. Resistance should be 10 k/ohms or more with switch in closed position and less than 5 ohms with switch in open position. If resistance is as specified, go to next step. If resistance is not as specified, replace appropriate door ajar switch.
  11. Turn ignition switch to LOCK position. Disconnect driver's door ajar switch harness connector C500. Disconnect DDM 16-pin harness connector C521. DDM is located behind door panel, in upper front corner of driver door. Measure resistance in Dark Blue wire between DDM harness connector C521 terminal No. 5 and driver's door ajar switch harness connector C500. See Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Dark Blue wire between driver's door ajar switch and DDM.
  12. Measure voltage between ground and DDM 16-pin harness connector C521 terminal No. 5 (Dark Blue wire). If voltage does not exist, go to next step. If voltage exists, repair short to voltage in Dark Blue wire between driver's door ajar switch and DDM.
  13. Turn ignition switch to LOCK position. Disconnect passenger's door ajar switches. Disconnect DDM 16-pin harness connector C521. Measure resistance in Black/Orange wire between DDM harness connector C521 terminal No. 6 and each passenger's door ajar switch harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Black/Orange wire. See WIRING DIAGRAMS  .
  14. Measure voltage between ground and DDM 16-pin harness connector C521 terminal No. 6 (Black/Orange wire). If voltage does not exist, go to next step. If voltage exists, repair short to voltage in Black/Orange wire. See WIRING DIAGRAMS  .
  15. Measure resistance between ground and Black wire terminal at each door ajar switch harness connector. If resistances are less than 5 ohms, replace driver's door module. If any resistance is 5 ohms or more, repair open in appropriate Black wire. See WIRING DIAGRAMS  .
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