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

  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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