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Test P: Remote Emergency Satellite Cellular Unit (RESCU) Module Does Not Respond To Scan Tester

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. Ensure ignition switch is in OFF position. Disconnect 84-pin harness connector C217. Harness connector C217 is located behind driver's side of instrument panel. See Figure .
  2. Using ohmmeter, check resistance between terminal No. 76 (Tan/Orange wire) on male side of harness connector C217 and terminal No. 2 (Tan/Orange wire) on Data Link Connector (DLC). See Figure and Figure .
  3. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit on Tan/Orange wire between DLC and harness connector C217. Repeat TEST A  .
  4. Using ohmmeter, check resistance between terminal No. 77 (Pink/Light Blue wire) on male side of harness connector C217 and terminal No. 10 (Pink/Light Blue wire) on DLC. See Figure and Figure .
  5. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit on Pink/Light Blue wire between DLC and harness connector C217. Repeat TEST A  .
  6. Disconnect Black 14-pin harness connector C471. Harness connector C471 is located in the trunk. See Figure .
  7. Using ohmmeter, check resistance between terminal No. 76 (Tan/Orange wire) on female side of harness connector C217 and terminal No. 9 (Tan/Orange wire) on female side of harness connector C471. See Figure and Figure .
  8. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit on Tan/Orange wire between harness connectors C217 and C471. Repeat TEST A  .
  9. Using ohmmeter, check resistance between terminal No. 77 (Pink/Light Blue wire) on female side of harness connector C217 and terminal No. 14 (Pink/Light Blue wire) on female side of harness connector C471. See Figure and Figure .
  10. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit on Pink/Light Blue wire between harness connectors C217 and C471. Repeat TEST A  .
  11. Disconnect 16-pin connector C449 from Remote Emergency Satellite Cellular Unit (RESCU) module. The RESCU module is located at passenger's side rear corner of the trunk, behind trim panel. See Figure .
  12. Using ohmmeter, check resistance between terminal No. 9 (Tan/Orange wire) on male side of harness connector C471 and terminal No. 21 (Tan/Orange wire) on connector C449. See Figure and Figure .
  13. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit on Tan/Orange wire between harness connector C471 and connector C449. Repeat TEST A  .
  14. Using ohmmeter, check resistance between terminal No. 14 (Pink/Light Blue wire) on male side of harness connector C471 and terminal No. 28 (Pink/Light Blue wire) on connector C449. See Figure and Figure .
  15. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open circuit on Pink/Light Blue wire between harness connector C471 and connector C449. Repeat TEST A  .
  16. Inspect pins and wire connections on harness connector C471 and connector C449. If pins and wire connections are okay, replace RESCU module. Repeat TEST A  . If pins or wire connections are defective or damaged, repair pins or wire connections as necessary. Repeat TEST A  .
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