Passive Anti-Theft System (PATS) Parameter Reset

Passive Anti-Theft System (PATS) Parameter Reset





NOTE: If the vehicle is not equipped with Passive Anti-Theft System (PATS) or is equipped with PATS, and the Instrument Cluster (IC) or the PCM is being replaced (or both), the parameters must be reset in both modules or the vehicle experiences a PATS no-start. PATS vehicles and non-PATS vehicles have parameters in the IC and the PCM and they must be reset whenever either (or both) module(s) is (are) replaced.

NOTE: When using the Integrated Diagnostic System (IDS), the IC and the PCM parameters are reset at the same time.

NOTE: Once security access has been granted, multiple security access commands should be executed (if necessary) prior to exiting the command menu. This avoids an additional security access procedure and the associated 10 minute time delay.

NOTE: A minimum of 2 PATS keys must be programmed into the IC before the vehicle starts.

1. NOTE: For PATS vehicles, if the IC was replaced, follow Steps 1-10. If the IC and the PCM were replaced, follow Steps 1-10. If only the PCM was replaced, follow Steps 1-3.

NOTE: For non-PATS vehicles, if the IC and/or the PCM were replaced, follow Steps 1-3.

Insert the key into the ignition lock cylinder and turn the key from the OFF position to the ON position.

2. From the scan tool, enter TOOLBOX. Select BODY-SECURITY-PATS Functions and follow the on-screen instructions to ENTER SECURITY ACCESS. For additional information, refer to Anti-Theft Security Access Programming and Relearning. This procedure takes approximately 10 minutes to carry out, during which time the ignition key must be in the ON position and the scan tool must be connected to the vehicle.

3. From the scan tool, select: Parameter Reset and follow the on-screen instructions.

4. From the scan tool, select: Ignition Key Code Erase and follow the on-screen instructions.

5. Turn the key to the OFF position and disconnect the scan tool (the key does not need to be removed at this time).

6. Turn the key to the ON position for a minimum of 3 seconds.

7. Turn the key to the OFF position and remove the key from the ignition lock cylinder.

8. Insert the second PATS key and cycle the key to the ON position for a minimum of 3 seconds.

9. Both keys will now start the vehicle.

10. If more keys are required to be programmed, refer to Key Programming Using Two Programmed Keys Using Two Programmed Keys.