Using Diagnostic Equipment

INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT

Special Tool(s):

Special Tool(s)

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.
- This procedure erases all programmed ignition keys from the vehicle memory and the vehicle will 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.
- A minimum of 2 PATS keys must be programmed into the instrument cluster before the vehicle will start.
- 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 may be the customer's original keys. One or both of them may be an IKT or a standard PATS key.
- If additional keys are to be programmed, refer to Key Programming 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 PID SPAREKEY must be enabled. Using Two Programmed Keys
- 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 instrument cluster.

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 on-screen instructions to ENTER SECURITY ACCESS.
3. From the scan tool menu select: IGNITION KEY CODE ERASE. Press the tick mark.
4. Turn the key to the OFF position and disconnect the scan tool.

5. NOTE: The RKE data transfer will take place between the key and the instrument cluster first. After both keys are programmed into the instrument cluster, then the RKE data will transfer from the instrument cluster to the smart junction box (SJB). Until the final data transfer takes place into the SJB, the RKE functions will not operate.

Insert the first 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).

6. Remove the first PATS 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. Remove the second encoded key from the ignition lock cylinder.
9. The vehicle should now start with both ignition keys and the RKE transmitter portion of an IKT should function.
10. If it is desired to program additional key(s) (only up to 8 keys total can be programmed into the instrument cluster), refer to Key Programming Using Two Programmed Keys for each additional key that needs to be programmed. Using Two Programmed Keys