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10C-17 Immobilizer Control System:
Programming Immobilizer System
Components
10-Minute Immobilizer Relearn
This 10-minute relearn 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.
2. Turn ON the ignition, with the engine OFF.
3. Ensure that all power consuming devices are turned
OFF on the vehicle.
4. With a scan tool, select Request Info. under Service
Programming System and follow the scan tool on-
screen instructions.
5. Disconnect the scan tool from the vehicle and
connect the scan tool to a Techline Terminal with the
current Service Programming System (SPS)
software.
6. On the Techline Terminal, select Service
Programming System and follow the Techline
Terminal on-screen instructions. Ensure the correct
programming selection is chose based on
component being replaced or programmed. For this
procedure, go to the V.T.D. Vehicle Theft Deterrent
Learn menu and choose the Vehicle Theft Deterrent
Learn, ECM, or PK3 Replaced selection.
7. Disconnect the scan tool from the Techline Terminal
and reconnect the scan tool to the vehicle.
8. With a master vehicle key, turn ON the ignition with
the engine OFF.
9. With a scan tool, select Program ECU under Service
Programming System.
10. At this point the scan tool must remain connected for
the duration of the 10-minute relearn procedure.
NOTE
• The scan tool will initially display 12
Minutes. The first 2 minutes allow the scan
tool to initialize the appropriate control
module. The remaining 10 minutes is the
relearn timer.
• On some vehicles the security indicator
may be illuminated for the duration of the
10-minute relearn procedure.
11. Observe the scan tool, after approximately 10
minutes the scan tool will display "Programming
Successful, Turn OFF Ignition". The vehicle is now
ready to relearn the key information and/or the
passwords on the next ignition switch transition from
OFF to CRANK.
12. Turn OFF the ignition and wait 2 minutes.
Repair Instructions
13. With a master vehicle key, turn the ignition to the
RUN position for 15 seconds, then start the vehicle.
The TDM and ECM have now relearned the pre-
release password and the challenge/response data.
14. With a scan tool, clear any DTCs.
Adding Keys
NOTE
• To initiate, this procedures requires that a
• A total of 10 master keys or valet keys may
• This procedure adds keys only. The
• The keys to be learned must duplicate the
• If more than one valet key is to be learned,
1. With a previously learned master key, turn ON the
ignition, with the engine OFF.
2. Turn OFF the ignition and remove the key.
3. Within 10 seconds insert the key to be learned. Turn
ON the ignition with the engine OFF. The vehicle has
now learned the new key.
Replacing Keys
10-Minute Vehicle Key Relearn
NOTE
This procedure will only relearn the vehicle
keys. This procedure will not learn the
immobilizer prerelease password or the
challenge/response data. Do not use this
procedure as a substitute for a 10-minute
relearn when replacing or reprogramming a
theft deterrent module (TDM) or engine
control module (ECM). Doing so will result in
a failure to learn the pre-release password
and/or the challenge/response data.
This 10-minute learn procedure should be used when all
vehicle keys are desired to be replaced or
reprogrammed. This procedure will erase all previously
learned vehicle keys from the TDM. Once the 10-minute
learn procedure has been completed, any remaining
vehicle keys may be programmed using the Adding Keys
procedure to ensure their continued functionality.
learned master key be available.
be programmed to a single vehicle.
procedure does not erase previously
learned keys.
mechanical cut of the current key.
immediately precede each valet key with a
learned master key.
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