Antitheft - Passive

Passive Antitheft System:

The Passive Anti-Theft System (PATS), known as SecuriLock, is fully passive in operation and requires no special procedures by the driver to arm or disarm the system. It is invisible to normal scrutiny and is operated by a transponder within the key body. This communicates with the module through a transceiver mounted around the ignition switch lock barrel.

The PATS functionality is incorporated within the Powertrain Control Module (PCM).

PATS keys contain an electronic device inside, and are physically larger than a non-PATS key.

The transponder code reading is carried out when the key is inserted into the ignition lock barrel, and turned from position '0' to position 'II' or 'III' to crank the engine. If the PCM receives the correct code signal, the engine will start. Should the code received not be recognized, the engine will not crank as the PATS is still armed and the engine immobilized.

Anti-Theft Indicator
Whenever the ignition is switched on the anti-theft indicator will remain on for three seconds while the system carries out an initial ignition key-read.

The anti-theft indicator will flash rapidly for three seconds to indicate the PATS has immobilized the vehicle.

For additional information on the PATS fault codes, refer to the Diagnosis and Testing. Testing and Inspection