Description & Operation

CAUTION: Vehicle is equipped with Supplemental Inflatable Restraint (SIR) or air bag. Failure to disable SIR system before performing service on or around SIR components or wiring, could cause possible air bag deployment. Refer to DISABLING SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM in this article.

Operation of theft deterrent system is controlled by the Central Control Module (CCM). When an unauthorized attempt to enter vehicle is detected, the module will sound an alarm by pulsating the vehicle's horns.

If an incorrect or improperly coded ignition key is used to attempt to start the vehicle, the cranking and fuel injection systems will be disabled. The system alarm pulsates the vehicle's horns at a rate of 50 cycles per minute. In order to conserve vehicle battery power, the alarm shuts OFF after 3-7 minutes of operation and then rearms.

After ignition is turned OFF, the system may be armed at either opened door by activating the power door lock switch to the lock position. After the last door is shut, there is a 5-second delay then the alarm system arms. Once the alarm is activated, the only way to shut the alarm OFF is to insert the oval head key into door lock and turn the key 90 degrees counterclockwise.

To prevent arming the system after using the door lock switch, switch can be moved to the unlock position before closing all doors. Arming process may also be canceled by rotating ignition switch to the RUN position, then back to LOCK.

Rotating the ignition switch will NOT cancel the alarm once it is activated. Doors may be locked manually, using the door key, without arming the system. Once alarm is activated, it will continue to operate for 3-7 minutes.At the end of 7 minutes, the alarm will automatically shut OFF. If the door locks have not been damaged, the system will rearm itself.

Each door lock is equipped with a tamper sensitive switch, which will trigger alarm if lock cylinder is tampered with in any way other then normal operation. The door and rear hatch switches will trigger the alarm if they are opened while the system is armed.

The anti-theft system prevents cranking of starter, and fuel delivery to engine, when using any key other the special electrically coded ignition key supplied with the vehicle. The cranking/fuel interrupt function operates independently of the alarm system and provides protection even if the alarm system is defeated and vehicle is left unlocked.

When operator turns ignition OFF, cranking and engine fuel delivery are automatically disabled. Inserting the properly encoded key into the ignition switch signals the CCM to permit cranking and to transmit a fuel enable signal to the ECM.

If the key used does not have the proper electrical coding, the CCM will reset for 2-4 minutes and not permit starting during this period, even with the proper key. To start vehicle, the key must have the correct mechanical and electrical coding. Ignition cylinder contains electrical contacts used to read the ignition key.