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Test D: Delayed Accessory Feature Does Not Turn Off

  1. Using NGS tester, monitor DDM PIDs D_DR_DD and P_DR_DD. Open and close doors several times. If PIDs agree with door positions, go to next step. If PIDs do not agree with door positions, go to step  9 .
  2. Test delayed accessory relay. See DELAYED ACCESSORY RELAY/POWER WINDOW RELAY  under COMPONENT TESTS. If relay is okay, go to next step. If relay is defective, replace relay.
  3. Measure resistance between ground and terminal No. 86 (Pink wire) at delayed accessory relay harness connector. See Figure . Wait 10 minutes. If resistance is greater than 10 k/ohms after 10 minutes, go to next step. If resistance is 10 k/ohms or less after 10 minutes, go to step  6 .
  4. Measure resistance between ground and terminal No. 86 (Pink wire) at delayed accessory relay harness connector. Open driver's door. If resistance is greater than 10 k/ohms after opening driver's door, go to next step. If resistance is 10 k/ohms or less after opening driver's door, go to step  8 .
  5. Disconnect DDM harness connector C522. Measure voltage between ground and terminal No. 3 (Yellow/Light Green wire) at DDM harness connector C522. If voltage exists, repair short to voltage in Yellow/Light Green wire. If voltage does not exist, replace driver's door module.
  6. Using 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 (DTC) DEFINITIONS in MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
  7. Remove delayed accessory relay from instrument panel fuse box. Disconnect LCM harness connector C220. Measure resistance between ground and terminal No. 86 (Pink wire) at delayed accessory relay harness connector. See Figure . If resistance is greater than 10 k/ohms, go to next step. If resistance is 10 k/ohms or less, repair short to ground in Pink wire.
  8. Connect LCM harness connector C220 and delayed accessory relay. Using NGS tester, access LCM PID IGN_LCM. If PID indicates OFF, replace driver's door module. If PID does not indicate OFF, replace lighting control module.
  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 (DTC) DEFINITIONS in MODULE COMMUNICATIONS NETWORK 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 greater than 10 k/ohms with switch in closed position and 5 ohms or less 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 harness connector C521. Measure resistance in Dark Blue wire between terminal No. 5 at DDM harness connector C521 and driver's door ajar switch harness connector C500. See Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Dark Blue wire.
  12. Measure voltage at terminal No. 5 (Dark Blue wire) at DDM harness connector C521. If voltage does not exist, go to next step. If voltage exists, repair short to voltage in Dark Blue wire.
  13. Turn ignition switch to LOCK position. Disconnect passenger's door ajar switches. Disconnect DDM harness connector C521. Measure resistance in Black/Orange wire between terminal No. 6 at DDM harness connector C521 and each passenger's door ajar switch harness connector. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Black/Orange wire.
  14. Measure voltage at terminal No. 6 (Black/Orange wire) at DDM harness connector C521. If voltage does not exist, go to next step. If voltage exists, repair short to voltage in Black/Orange wire.
  15. Measure resistance between ground and Black wire terminal at each door ajar switch harness connector. If resistances are 5 ohms or less, replace driver's door module. If any resistance is greater than 5 ohms, repair open in appropriate Black wire.
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