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

  1. Turn ignition switch to OFF position. Disconnect Remote Emergency Satellite Cellular Unit (RESCU) module 12-pin harness connector C448 located in right rear of trunk, behind trim panel. See Fig 1 . Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, reconnect harness connector. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn ignition switch to ON position. Perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST  under SELF-DIAGNOSTIC SYSTEM. If NGS tester indicates RESCU: NO RESPONSE ON CKT 914 (BUS +), go to next step. If NGS tester indicates RESCU: NO RESPONSE ON CKT 914 (BUS -), go to step  5 .
  2. Turn ignition switch to OFF position. Disconnect NGS tester. Disconnect RESCU module harness connector C448. Measure resistance of Tan/Orange wire between terminal No. 11 at RESCU module harness connector C448 and terminal No. 2 at DLC. See Figure and Fig 2 . If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, replace RESCU module.
  3. Disconnect 84-pin harness connector C217 located behind left side of instrument panel. See Figure . Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Tan/Orange wire between terminal No. 55 at harness connector C217 and terminal No. 2 at DLC. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Tan/Orange wire between harness connector C217 and DLC.
  4. Disconnect 16-pin harness connector C409 located in center front of trunk. Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Tan/Orange wire between terminal No. 11 at RESCU module harness connector C448 and terminal No. 8 at harness connector C409. See Fig 2 and Fig 3 . If resistance is 5 ohms or less, repair open in Tan/Orange wire between harness connector C217 and harness connector C409. If resistance is greater than 5 ohms, repair open in Tan/Orange wire between harness connector C409 and RESCU module.
  5. Turn ignition switch to OFF position. Disconnect RESCU module harness connector C448. Disconnect NGS tester. Measure resistance of Pink/Light Blue wire between terminal No. 5 at RESCU module harness connector C448 and terminal No. 10 at DLC. See Figure and Fig 2 . If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, replace RESCU module.
  6. Disconnect 84-pin harness connector C217 located behind left side of instrument panel. See Figure . Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Pink/Light Blue wire between terminal No. 79 at harness connector C217 and terminal No. 10 at DLC. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Pink/Light Blue wire between harness connector C217 and DLC.
  7. Disconnect 16-pin harness connector C409 located in center front of trunk. Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Pink/Light Blue wire between terminal No. 5 at RESCU module harness connector C448 and terminal No. 16 at female half of harness connector C409. See Fig 2 and Fig 3 . If resistance is 5 ohms or less, repair open in Pink/Light Blue wire between harness connector C217 and harness connector C409. If resistance is greater than 5 ohms, repair open in Pink/Light Blue wire between harness connector C409 and RESCU module.
Fig 1: Locating Phone Support Electronics (PSE) Module & Remote Emergency Satellite Cellular Unit (RESCU) Module
G98A01702Courtesy of FORD MOTOR CO.
Fig 2: Identifying RESCU Module Harness Connector C448 Terminals
G98C01703Courtesy of FORD MOTOR CO.
Fig 3: Identifying Harness Connector C409 Terminals (Female Side Shown)
G98E01704Courtesy of FORD MOTOR CO.
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