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Home >> Ford >> 2000 >> Explorer 4D Utility, 5.0 P, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Module Communications Network) >> System Tests >> Test B: Generic Electronic Module/Central Timer Module Does Not Respond To NGS Tester
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Test B: Generic Electronic Module/Central Timer Module Does Not Respond To NGS Tester

WARNING: This page is about a different car, the 2001 Mercury Mountaineer and 2001 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to LOCK position. Disconnect Generic Electronic Module/Central Timer Module (GEM/CTM) 26-pin harness connector C280. Inspect connector for physical damage, bent terminals or corrosion. If connector is okay, go to next step. If connector is damaged, repair connector as necessary and recheck system operation.
  2. Measure resistance of Light Blue/White wire between GEM/CTM harness connector C280 terminal No. 25 and Data Link Connector (DLC) terminal No. 7. See Figure and Fig 1 . If resistance is less than 5 ohms, replace GEM/CTM and recheck system operation. If resistance is 5 ohms or more, repair open in Light Blue/White wire between GEM/CTM and DLC. Recheck system operation.
Fig 1: Identifying Generic Electronic Module/Central Timer Module Harness Connector C280 & Remote Anti-Theft Personality Module Harness Connector C336 Terminals
G97A28803Courtesy of FORD MOTOR CO.
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