Anti-Theft Systems - Passive: Description

The passive anti-theft system is designed to prevent driveaway thefts. The system is passive in that it does not require any activity from user. System uses a radio frequency identification technology to verify proper key is being used to attempt to start the vehicle.

During each starting sequence, Passive Anti-Theft System (PATS) transceiver module, located behind steering wheel column shroud, and contains an antenna connected to a small electronic module. PATS transceiver module reads encoded ignition key identification code, during each vehicle start sequence. If identification code is programmed into anti-theft system, vehicle is capable of starting. If identification code is incorrect or missing, vehicle is prevented from starting.

PATS module communicates with Powertrain Control Module (PCM) through Module Communication Network (MCN). PCM then determines if engine will be enabled to start. If PCM prevents vehicles from starting because of PATS, a Diagnostic Trouble Code (DTC) will be stored in memory.

PATS vehicle protection system consists of: PATS transceiver module, THEFT indicator light, encoded ignition key, PCM and Data Link Connector (DLC). A maximum of 8 keys can be programmed into system.