Programming Replacement Keys, Ignition Cylinder, or Powertrain Control Module Auto Learn
This procedure allows reprogramming of the Passlock™
module learned data code without any tools other than the scan. This procedure
allows reprogramming following the replacement of any of the following
parts:
- The Passlock™ module
- The Passlock™ sensor
- The vehicle control module (VCM)¹
The Passlock™ module sets the DTC B3031 module in the learn mode
when entering the reprogramming procedure.
- Clear all the Passlock™ module DTCs and the VCM DTCs².
- Turn the ignition switch to the OFF position.
- Replace the module or the sensor, as necessary.
- Turn the ignition switch to the ON position.
- Momentarily rotate the ignition switch to the START position
without starting the engine.
Release the ignition switch to the ON position.
- Observe the SECURITY indicator.
• | If the Passlock™ sensor was replaced, the SECURITY indicator
flashes for a 10-minute period. |
• | If the Passlock™ module was replaced, the SECURITY indicator
flashes for a period of a few seconds. |
• | Then the SECURITY indicator remains illuminated for a period
of 10 minutes. |
• | If the VCM was replaced with a new, off-the-shelf VCM, the vehicle
starts. This procedure may not be necessary. |
• | If the replacement VCM was connected at any other time, even momentarily,
the SECURITY indicator flashes for a period of a few seconds. |
• | Then the SECURITY indicator remains illuminated for a period
of 10 minutes. |
- Following the period of 10 minutes with the ignition switch
in the ON position, the SECURITY indicator stops flashing.
Then the SECURITY indicator illuminates briefly.
Then the SECURITY indicator extinguishes.
- Replace the module or the sensor, as necessary.
- Turn the ignition switch to the ON position.
- Momentarily rotate the ignition switch to the START position
without starting the engine.
Release the ignition switch to the ON position.
- Observe the SECURITY indicator.
• | If the Passlock™ sensor was replaced, the SECURITY indicator
flashes for a 10-minute period. |
• | If the Passlock™ module was replaced, the SECURITY indicator
flashes for a period of a few seconds. |
• | Then the SECURITY indicator remains illuminated for a period
of 10 minutes. |
• | If the VCM was replaced with a new, off-the-shelf VCM, the vehicle
starts. This procedure may not be necessary. |
• | If the replacement VCM was connected at any other time, even momentarily,
the SECURITY indicator flashes for a period of a few seconds. |
• | Then the SECURITY indicator remains illuminated for a period
of 10 minutes. |
- Following the period of 10 minutes with the ignition switch
in the ON position, the SECURITY indicator stops flashing.
Then the SECURITY indicator illuminates briefly.
Then the SECURITY indicator extinguishes.
- Replace the module or the sensor, as necessary.
- Turn the ignition switch to the ON position.
- Momentarily rotate the ignition switch to the START position
without starting the engine.
Release the ignition switch to the ON position.
- Observe the SECURITY indicator.
• | If the Passlock™ sensor was replaced, the SECURITY indicator
flashes for a 10-minute period. |
• | If the Passlock™ module was replaced, the SECURITY indicator
flashes for a period of a few seconds. |
• | Then the SECURITY indicator remains illuminated for a period
of 10 minutes. |
• | If the VCM was replaced with a new, off-the-shelf VCM, the vehicle
starts. This procedure may not be necessary. |
• | If the replacement VCM was connected at any other time, even momentarily,
the SECURITY indicator flashes for a period of a few seconds. |
• | Then the SECURITY indicator remains illuminated for a period
of 10 minutes. |
- Following the period of 10 minutes with the ignition switch
in the ON position, the SECURITY indicator stops flashing.
Then the SECURITY indicator illuminates briefly.
Then the SECURITY indicator extinguishes.
- The module learns the new component the new component on the subsequent
ignition lock cylinder cycle from the OFF position, to the START position,
to the ON position (start attempt)
¹If a new VCM is being installed for the first time, the manufacturing
enable bit sets and the auto learn procedure may not be necessary.
Erase ²Passlock™-related DTCs stored at the VCM. If any powertrain-related
DTCs are present, record the powertrain DTCs first. Refer to Engine Controls
to complete powertrain DTC procedures.