Passive Anti-Theft System (PATS)

Description and Operation

Component location

 

1----Passive anti-theft (PATS) transponder

2----PATS transceiver

 

Operation

PATS
The PATS is a passive system designed to increase the anti-theft security of the vehicle.
The driver does not need to actively do anything to protect the vehicle. The PATS is activated automatically after the ignition is switched off.
The PATS system uses specially encoded keys.
If a valid key is inserted into the ignition lock cylinder and turned to position II, the code from the PATS transponder is received by the PATS transceiver. The code is then sent to the passenger junction box (PJB) which checks that a correct key has been inserted and communicates with the powertrain control module (PCM) to enable the engine to start.
If the code received by the PATS transceiver does not agree with any of the codes programmed to the vehicle, or if errors occur in the PATS, the engine cannot be started.
To indicate a concern in the PATS, the following message will be shown in the information and message center (located in the instrument cluster):

• Immobiliser
  -

  active