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Test Q: Memory Mirror Inoperative

WARNING: This page is about a different car, the 1997 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition on. Perform DSM Self Test. If DTC U1180, U1181 or U1194 exist, see the SEATS - POWER article. If DTC U1180, U1181 or U1194 do not exist, go to next step.
  2. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Set NGS tester to DDM PID MEM2_SW. Press memory/recall position 2 button. If PID MEM2_SW reads ON, go to step 8). If PID MEM2_SW does not read ON, go to next step.
  3. Set tester to DDM PID MEM1_SW.If PID MEM1_SW reads ON, go to step 5). If PID MEM1_SW does not read ON, go to next step.
  4. Disconnect Memory Off/Recall Switch connector C515. Check voltage at connector C515 terminal 5 (Dark Green/Purple wire). If battery voltage exists, replace switch and retest. If battery voltage does not exist, repair open Dark Green/Purple wire and retest.
  5. Disconnect DDM connector C456. Check voltage at connector C456 terminal No. 7 (Black/Orange wire) while pushing memory off/recall switch position 2 button. If battery voltage exists, replace DDM and retest. If battery voltage does not exist, go to next step.
  6. Check continuity between connector C456 terminal No. 7 (Black/Orange wire) and ground. If resistance is 10,000 ohms or more go to next step. If resistance is more than 10,000 ohms, repair Black/Orange wire and retest.
  7. Disconnect Memory Off/Recall Switch connector C515. Check continuity between connector C456 terminal No. 7 (Black/Orange wire) and connector C515 terminal No. 1 (Black/Orange wire). If resistance is more than 5 ohms, repair open Black/Orange wire and retest. If resistance is 5 ohms or less, replace Memory Off/Recall Switch and retest.
  8. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Set NGS tester to DDM PID MEM1_SW. Press memory/recall position 1 button. If PID MEM1_SW reads ON, replace DSM and retest. If PID MEM1_SW does not read ON, go to next step.
  9. Disconnect DDM connector C456. Check voltage at connector C456 terminal No. 19 (Brown/Light Green wire) while pushing memory off/recall switch position 1 button. If battery voltage exists, replace DDM and retest. If battery voltage does not exist, go to next step.
  10. Check continuity between connector C456 terminal No. 19 (Brown/Light Green wire) and ground. If resistance is 10,000 ohms or more go to next step. If resistance is more than 10,000 ohms, repair Brown/Light Green wire and retest.
  11. Disconnect Memory Off/Recall Switch connector C515. Check continuity between connector C456 terminal No. 19 (Brown/Light Green wire) and connector C515 terminal No. 3 (Brown/Light Green wire). If resistance is more than 5 ohms, repair open Brown/Light Green wire and retest. If resistance is 5 ohms or less, replace Memory Off/Recall Switch and retest.
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