Passive Anti-Theft System (PATS) Key Programming Using Two Programmed Keys

Key Programming Using Two Programmed Keys

NOTE: This procedure works only if 2 or more programmed ignition keys are available. If 2 keys are not available, refer to Spare Key Programming - Using Diagnostic Equipment Passive Anti-Theft System (PATS) Spare Key Programming - Using Diagnostic Equipment.

NOTE: The Instrument Cluster (IC) SPAREKEY PID must be enabled for this procedure to operate. If this PID is not enabled, refer to Key Programming Switch State Control Passive Anti-Theft System (PATS) Key Programming Switch State Control. The IC (Instrument Cluster) SPAREKEY PID is set to "Enabled" when the vehicle is built.

NOTE: If the programming procedure is successful, the new key(s) starts the vehicle and the anti-theft indicator illuminates for approximately 3 seconds. If the programming procedure is not successful and the new key(s) does not start the engine, leave the key in the ON position for at least 3 seconds, then turn the key to OFF. Repeat the key programming procedure from Step 1. If the failure repeats, refer to Anti-Theft Testing and Inspection in the Diagnosis and Testing portion to review the DTCs and carry out the appropriate pinpoint tests.

NOTE: A maximum of 8 Passive Anti-Theft System (PATS) keys can be programmed into the IPC (Instrument Panel Cluster) during this programming procedure, but only if the IC (Instrument Cluster) SPAREKEY PID is "Enabled".

NOTE: A minimum of 2 PATS (Passive Anti-Theft System) keys must be programmed into the IC (Instrument Cluster) before the vehicle starts.

NOTE: If the vehicle is in unlimited key mode, this spare key programming procedure still functions. Any 2 keys that can start the vehicle can be used to program an additional unlimited key.

NOTE: If additional keys are to be programmed, and the remaining keys are with the customer, or are not available, instruct the customer to refer to the Owner's Literature for instructions on programming the remaining keys. In this case, the IC (Instrument Cluster) SPAREKEY PID must be enabled.

NOTE: If the steps are not carried out as outlined, the programming procedure ends.

NOTE: Ignition keys must have a correct mechanical key cut for the vehicle and must be PATS (Passive Anti-Theft System) encoded keys (contain a transponder).

NOTE: This procedure is not necessary if only the PATS (Passive Anti-Theft System) transceiver was replaced. Replacement of the transceiver does not erase the PATS (Passive Anti-Theft System) key codes in the IC (Instrument Cluster).

NOTE: When in the unlimited key mode, the N_KEYCODE PID always reads 2, no matter how many keys are programmed to the vehicle (after the first 2 keys have been programmed).

1. Insert the first programmed PATS (Passive Anti-Theft System) key into the ignition lock cylinder and turn the key from the OFF position to the ON position (maintain the key in the ON position for a minimum of 3 seconds and less than 10 seconds).

2. Turn the key to the OFF position and remove the first PATS (Passive Anti-Theft System) key from the ignition lock cylinder.

3. Within 10 seconds of turning the PATS (Passive Anti-Theft System) key to the OFF position, insert the second programmed PATS (Passive Anti-Theft System) key into the ignition lock cylinder and turn the PATS (Passive Anti-Theft System) key from the OFF position to the ON position (maintain the key in the ON position for a minimum of 3 seconds and less than 10 seconds).

4. Turn the PATS (Passive Anti-Theft System) key to the OFF position and remove the key from the ignition lock cylinder.

5. Within 20 seconds of turning the second programmed PATS (Passive Anti-Theft System) key to the OFF position, insert the unprogrammed PATS (Passive Anti-Theft System) key (the new key) into the ignition lock cylinder and turn the key from the OFF position to the ON position (maintain the key in the ON position for a minimum of 3 seconds and less than 10 seconds).

6. If it is desired to program additional PATS (Passive Anti-Theft System) key(s) (only up to 8 keys total can be programmed into the IC (Instrument Cluster)), repeat Steps 1-5 for each additional PATS (Passive Anti-Theft System) key that needs to be programmed.

7. Start the vehicle with the new PATS (Passive Anti-Theft System) key(s).