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Home >> Mercury >> 1999 >> Villager Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Module Communications Network >> Self-Diagnostic System >> System PRECHECK - Checking Communications With All Modules
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System PRECHECK - Checking Communications With All Modules

  1. Turn ignition off. Connect New Generation Star (NGS) tester to Data Link Connector (DLC) C252, if not already connected. DLC C252 is located below driver's side of instrument panel, to left of steering column above fuse junction panel. Turn ignition on. Run DIAGNOSTIC TEST MODE RESULTS for Anti-lock Brake System (ABS). If the results are:
    • LINK COMMUNICATION ERROR
    • MODULE NOT RESPONDING
    • CHECK IGNITION STATUS
    • CHECK CABLE (DDL ADAPTER) CONNECTIONS
    Go to next step. If results are not as listed, see SYMPTOM INDEX  under SYSTEM TESTING.
  2. Run DIAGNOSTIC TEST MODE RESULTS for Powertrain Control Module (PCM). If the results are:
    • LINK COMMUNICATION ERROR
    • MODULE NOT RESPONDING
    • CHECK IGNITION STATUS
    • CHECK CABLE (DDL ADAPTER) CONNECTIONS
    Go to next step. If results are not as listed, see SYMPTOM INDEX  under SYSTEM TESTING.
  3. Run DIAGNOSTIC TEST MODE RESULTS for Transmission Control Module (TCM). If the results are:
    • LINK COMMUNICATION ERROR
    • MODULE NOT RESPONDING
    • CHECK IGNITION STATUS
    • CHECK CABLE (DDL ADAPTER) CONNECTIONS
    Go to TEST D: NO MODULE/NETWORK COMMUNICATIONS & UNABLE TO COMMUNICATE WITH ANY MODULE under TESTING. If results are not as listed, see SYMPTOM INDEX  under SYSTEM TESTING.
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