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Home >> Buick >> 2002 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.1L Engine >> Programming >> Theft Deterrent Password Learn Procedure >> 30-Minute Learn Procedure
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30-Minute Learn Procedure

  1. Turn ignition on, with engine off.
  2. Attempt to start engine, then release key to ON position (vehicle will not start).
  3. Observe the SECURITY telltale, after about 10 minutes, the telltale will turn off.
  4. Turn ignition off, and wait 5 seconds.
  5. Repeat steps  1 -  4 two more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the Passlock™ Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).
    6. NOTE: The vehicle learns the Passlock™ Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition off before attempting to start vehicle.
  6. Start engine (vehicle has now learned the Passlock™ Sensor Data Code and/or password).
  7. With scan tool, clear any DTCs, if needed (history DTCs will self clear after 100 ignition cycles).
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