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Preliminary Checks

WARNING: This page is about a different car, the 1997 Mercury Sable and 1997 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check fuses in interior fuse panel and maxi-fuses in underhood power distribution box. Replace as necessary. Visually inspect wiring harness for obvious signs of damage.
    NOTE: Left front window must be in full up position while performing self-diagnostics.
  2. If concern remains after checking fuses and wiring harness, perform self-diagnostics on the Generic Electronic Module (GEM). Self-diagnostics are carried out using Rotunda New Generation Star (NGS) tester. See MODULE COMMUNICATIONS NETWORK article for further information.
  3. If self-diagnostics is completed and no Diagnostic Trouble Codes (DTCs) are retrieved, continue with TROUBLE SHOOTING, then go to appropriate symptom related test (if necessary). If self-diagnostics is completed and DTCs are retrieved, go to appropriate DTC test in this article. If a DTC is retrieved from GEM and the correct test is not in this article, refer to DTC chart for GEM in MODULE COMMUNICATIONS NETWORK article for a brief explanation of DTC. The DTC chart should direct you to correct article to find testing procedure.
  4. If a communication problem exists with GEM, go to PINPOINT TEST A under TESTING. Also, see MODULE COMMUNICATIONS NETWORK article for data bus diagnostics and repair procedures.
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