The PATS anti-theft system will not let the starter engage an spin the engine around to start the vehicle if the theft deterrent module does not get correct coded value from the pats key. There is a transponder in the head of the key - when put into the lock cylinder a antenna behind the plastic steering column energizes the transponder which makes it send it's unique code to the computers on the vehicle. You have no clue what you're doing . Take it to a qualified repair shop .
You would need a factory scan tool to check for codes in the computers before just replacing parts. Changing the ignition ? lock & key assemble or the electrical part of ignition switch? If key an lock cylinder the key needs to be programmed into the control modules .
Anti-Theft
NOTE: If the instrument cluster or the PCM (or both) is installed, the parameters must be reset in both modules or the vehicle will experience a passive anti-theft system (PATS) no-start. For additional information, refer to Passive Anti-Theft System (PATS) Parameter Reset in this section.
PATS consists of the following components:
- Anti-theft indicator (located in the autolamp/sunload sensor)
- Encoded (the key contains a transponder) ignition key
- PATS transceiver
- Instrument cluster
- Powertrain control module (PCM)
PATS uses radio frequency identification technology to deter a drive-away theft. Passive means that it does not require any activity by the user.
The vehicle is equipped with 2 PATS keys. A maximum of 8 PATS keys can be programmed to start the vehicle. If additional PATS keys are desired, refer to Spare Key Programming - Unlimited Key Mode in this section.
