Immobilizer System Component Programming

Immobilizer System Component Programming

ECM To TDM Link Procedure

This procedure will relearn the prerelease password and the challenge/response data between the theft deterrent module (TDM) and the engine control module (ECM).

1. Connect a scan tool to the vehicle in the pass-thru arrangement.
2. Ensure that all power consuming devices are turned OFF on the vehicle.
3. On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions, using the Pass-Thru method. Ensure the correct programming selection is chosen based on component being replaced or programmed. For this procedure, go to the VTD Vehicle Theft Deterrent Learn (Relearn & Link) menu and choose the ECM to VTD Link Procedure selection.
4. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.
5. Observe the scan tool. After approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition".
6. Turn OFF the ignition and wait 2 minutes.
7. With a master vehicle key, turn the ignition to the RUN position for 15 seconds, then start the vehicle.
8. With a scan tool, clear any DTCs.