The passive anti-theft system is designed to prevent driveaway thefts. The system is passive in that it does not require any activity from the user. System uses radio frequency identification technology to verify proper key is being used to attempt to start the vehicle.
During each starting sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the Passive Anti-Theft System (PATS) module. If the key's identification code is programmed into anti-theft system, vehicle is capable of starting. If key's identification code is incorrect or missing, vehicle is prevented from starting.
PATS module communicates with the Powertrain Control Module (PCM) via Module Communication Network (MCN). PCM then determines if engine will be enabled to start. If the PCM prevents vehicle from starting because of PATS system, a Diagnostic Trouble Code (DTC) will be stored in memory.
PATS vehicle protection system consists of these components: PATS module, THEFT indicator light, transceiver module, encoded ignition key, module communications network and Data Link Connector (DLC).
Oct 5, 2009 at 8:59 PM
