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Security Indicator Inoperative.

WARNING: This page is about a different car, the 1998 Cadillac Seville and 1997 Cadillac Seville. However, it is still accessible from the selected car via links, so may be relevant.
  1. If sent here from PASS-Key III(R) SYSTEM CHECK, go to next step. If PASS-Key III(R) SYSTEM CHECK has not been performed, go to PASSKEY III(R) SYSTEM CHECK  .
  2. Attempt to communicate with Instrument Panel Cluster (IPC), Left Front Door Module (LFDM) and Vehicle Theft Deterrent (VTD) Module in serial data line. If communication is possible with all other modules, go to next step. If no communication is possible, go to step 10).
  3. Using scan tool, select IPC output functions and command SECURITY indicator on and off. If indicator operates properly, go to next step. If indicator does not operate, see appropriate INSTRUMENT PANEL article:
  4. Check operation of power lock switches. If power locks operate properly, go to next step. If power locks do not operate properly, see appropriate article:
  5. Close all doors. Turn ignition on. If DOOR AJAR message is displayed, see appropriate INSTRUMENT PANEL article:

    If DOOR AJAR message is not displayed, go to next step.

  6. Open driver's door. If DOOR AJAR message is displayed, go to next step. If DOOR AJAR message is not displayed, see appropriate INSTRUMENT PANEL article:
  7. Close driver's door. Open passenger door. If DOOR AJAR message is displayed, go to next step. If DOOR AJAR message is not displayed, see appropriate INSTRUMENT PANEL article:
  8. Turn ignition on. If SECURITY light is on or flashing, go to PASS-Key III(R) SYSTEM CHECK. If light is off, go to next step.
  9. Check following circuits for intermittent malfunction:
    • Driver door ajar switch.
    • Passenger door ajar switch.
    • Trunk tamper switch.
    • Power lock switches.
    • Door lock cylinder switches.
    • Hood ajar switch (export only)
    • Communications between IPC, LFDM and VTD.

    Repair as necessary. If no problem was found, system is okay. If problem was found and repaired, go to step 11).

  10. For IPC communication problem, see appropriate INSTRUMENT PANEL article:

    See also WIRING DIAGRAMS  . For VTD communication problem, go to PASS-Key III(R) SYSTEM CHECK and see WIRING DIAGRAMS  . For LFDM communication problem, see WIRING DIAGRAMS  .

  11. Turn ignition off. Reconnect all connectors. Go to PASSKEY III(R) SYSTEM CHECK  .
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