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Vehicle Theft Security System Self-Test

NOTE: Vehicle Theft Security System (VTSS) and VTSS self-test will be inoperative if Powertrain Control Module (PCM) has been replaced within last 20 ignition switch cycles. System operation may be verified by entering self-test mode. Self-test mode can only be entered using Chrysler's Diagnostic Readout Box (DRBIII(R)) scan tool.
  1. Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). Turn ignition switch to ON position. Using scan tool, select THEFT ALARM, SKIM, MISCELLANEOUS, then SELF-TEST. Once in self-test mode, parking lights and taillights will flash and horn will sound twice. Parking lights and taillights will flash verifying their operation, and horn will sound twice to verify proper trunk cylinder position.
  2. To stop lights from flashing, turn ignition switch to OFF position while keeping system in self-test. While in self-test mode, horn will sound after each of the following steps to indicate proper operation:
    • Ensure all doors are closed. Open, then close each door. Horn will sound when door ajar switch closes and opens. There must be a one-second delay between closing and opening switch.
    • Activate power door locks in both LOCK and UNLOCK directions. Horn will sound after each activation.
    • Rotate key in both front door lock cylinders to unlock position. Horn will sound when switch closes and opens. Ensure there is a one-second delay between changing switch states, or horn will not sound.
    • Using Remote Keyless Entry (RKE) transmitter, activate locks in both LOCK and UNLOCK directions for one-second. Horn will sound after each activation.
    • Turn ignition switch to ON position. A single horn pulse indicates proper operation of ignition input and exits VTSS module out of self-test mode.
    • For any of these tests, if switch does not remain open or closed for at least one second, the horn will only sound once.
  3. Lack of horn pulse during any operation indicates a switch failure. Check for continuity at suspect switch. If switch continuity is okay, check for open or shorted wire between switch and VTSS module.
  4. Whenever a VTSS malfunction occurs, verify wiring harness is properly connected to all connectors before starting diagnosis and repair procedures.
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