Using Diagnostic Equipment

Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment





NOTE: This procedure is used when a customer needs keys programmed into the system and does not have 2 programmed ignition keys available. This procedure is also useful when a programmed ignition key(s) is lost or the ignition lock cylinder is replaced, and it is desired to erase key code(s) from the Passive Anti-Theft System (PATS) memory.

NOTE: This procedure erases all programmed ignition keys from the vehicle memory and the vehicle does not start until 2 keys are programmed to the vehicle. This procedure also erases the Integrated Keyhead Transmitter (IKT) identification codes (TICs) from the Smart Junction Box (SJB), preventing the erased IKT from operating the Remote Keyless Entry (RKE) functions on the vehicle.

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

NOTE: Two PATS encoded (contains a transponder) IKT keys (or standard PATS keys) with the correct mechanical cut must be available to carry out this procedure. One or both of them can be the customer's original keys. One or both of them can be an IKT or a standard PATS key.

NOTE: If additional keys are to be programmed, refer to Key Programming Using Two Programmed Keys Using Two Programmed Keys. If the remaining keys are with the customer and are not available with the vehicle, instruct the customer to refer to the Owner's Literature for instructions on programming the remaining keys. In this case, the IC PID SPAREKEY must be enabled.

NOTE: This procedure is not necessary if only the PATS transceiver was replaced. Replacement of the transceiver does not erase the PATS key codes in the IC.

1. 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 Integrated Diagnostic System (IDS) on-screen instructions to ENTER SECURITY ACCESS. For additional information, refer to Anti-Theft Security Access Anti-Theft Security Access.

3. From the scan tool menu select: "Ignition Key Code Erase". Follow all IDS on-screen instructions until the key erase procedure completes. The scan tool also instructs to program 2 keys to complete the process.

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

5. NOTE: The RKE data transfer takes place between the key and the IC first. After both keys are programmed into the IC, the RKE data transfers from the IC to the Smart Junction Box (SJB). Until the final data transfer takes place into the SJB, the RKE function does not operate.

NOTE: IKT keys require a 6-second programming time frame for the RKE data transfer to take place, while standard PATS keys only require a minimum of 3 seconds.

Turn the first PATS key to the ON position for a minimum of 6 seconds (this additional 3 second time frame allows for the RKE data transfer to take place).

6. Turn the first PATS key to the OFF position and remove the key from the ignition lock cylinder.

7. Insert the second PATS key into the ignition lock cylinder and turn the key to the ON position for a minimum of 6 seconds (this additional 3 second time frame allows for the RKE data transfer to take place).

8. The vehicle should now start with both ignition keys and the RKE transmitter portion of an IKT should function.

9. If it is desired to program additional key(s) (only up to 8 keys total can be programmed into the IC, of which only 4 can be IKT keys), refer to Key Programming Using Two Programmed Keys Using Two Programmed Keys for each additional key that needs to be programmed.