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Test B: Electronic Crash Sensor Module Does Not Respond To NGS Tester

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 Ford Pickup, 2001 Ford F550 Super Duty, 2001 Ford F450 Super Duty, 2001 Ford Excursion, and 2001 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Electronic Crash Sensor (ECS) module may also be referred to as air bag diagnostic module, air bag diagnostic monitor or Restraints Control Module (RCM).
  1. Turn ignition switch to LOCK position. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Electronic Crash Sensor (ESC) module connector. Inspect ESC module connector for loose, damaged or corroded terminals. Repair connector as necessary. If ESC module connector is okay, go to next step.
  2. Measure resistance of Light Blue/White wire between ECS module terminal No. 19 and Data Link Connector (DLC) terminal No. 7. See Figure and Fig 1 . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between DLC and ECS module.
  3. Disconnect all ECS connectors and inspect for loose, damaged or corroded terminals. Repair connector as necessary. Reconnect all connectors. Operate vehicle to verify problem. If problem is present, replace ECS module. See REMOVAL & INSTALLATION in appropriate INSTRUMENT PANELS article. If problem no longer exists, problem may have been caused by poor contact at connector.
Fig 1: Identifying Electronic Crash Sensor Module Connector Terminals
G98C01656Courtesy of FORD MOTOR CO.