Program A Key Using Two Programmed Keys

Precautions:

Note:
- This procedure only works if two or more programmed ignition keys are available and it is desired to program additional key(s).
- If two keys are not available follow Key Programming, Erase All Key Codes and Program Two Keys. Erase All Key Codes and Program Two Keys

Note:
- PID SPARKY must be enabled for this procedure to operate.
- If this PID is not enabled, follow the Security Access Procedure, then select Spare Key Programming Switch: Enabled. Security Access Procedure

Note:
- If the programming procedure is successful, the new key(s) will start the vehicle and the THEFT INDICATOR will illuminate for approximately 3 seconds.

Note:
- If the programming procedure is not successful, the new key(s) will not start the vehicle and the THEFT INDICATOR will flash.
- If the programming procedure was not successful repeat the Key Programming procedure from Step 1.
- If the failure repeats, check Circuit 54 (LG/Y) (hot at all times) in PATS control module for proper battery voltage. REPAIR circuit if voltage is not present. Refer to Testing and Inspection to review DTCs and perform Pinpoint Tests as required.

Note:
- A maximum of 8 ignition keys can be programmed to a passive anti-theft system (PATS) equipped vehicle.
- Use PID NUMKEYS to determine how many keys are programmed to vehicle. PATS Parameter Identification Index

Note:
- If the steps are not performed as outlined, the programming procedure will end.

Note:
- Ignition keys must have correct mechanical key cut for the vehicle and must be a PATS encoded key.

Procedure:
1. Insert first programmed ignition key into ignition switch and turn ignition switch from OFF to RUN (maintain ignition switch in RUN for 1 second).
2. Turn ignition switch to OFF and remove first key from ignition switch.
3. Within 5 seconds of turning the ignition switch to OFF, insert second programmed ignition key into ignition switch and turn ignition switch from OFF to RUN (maintain ignition switch in RUN for 1 second).
4. Turn ignition switch to OFF and remove second key from ignition switch.
5. Within 10 seconds of turning the ignition switch to OFF, insert the unprogrammed ignition key (new key) into ignition switch and turn ignition switch from OFF to RUN (maintain ignition switch in RUN for 1 second).
6. If it is desired to program additional key(s), repeat the Key Programming Procedure from the beginning.