ignition key with chip

The Passlock family has two basic relearn procedures—a ten-minute procedure and a thirty-minute procedure—and which one you use depends on the system and what components have been replaced. The ten-minute procedure involves trying to start the engine. If nothing happens or the engine starts and dies, the security light will be flashing. Wait ten minutes. The flashing light should go off or illuminate without flashing. When it does, turn the ignition off, wait twenty seconds, and then try to start the engine. If it starts and runs, everything is okay. If you get the same result as previously—nothing happens or the engine starts and dies with the security light flashing—wait ten more minutes. You will now begin the thirty-minute relearn procedure, which is just the ten-minute procedure repeated three times. After turning the ignition off for the third time and waiting for twenty seconds, the engine should start and run. If it doesn't, there may still be something wrong with the system. After the learn procedure is completed and the engine is running, the security light may stay on steady for a few minutes and then go off—this is normal. Depending on the system, replacement of key components will necessitate that a relearn procedure be completed. These include the ignition lock cylinder, Powertrain Control Module (PCM), Body Control Module (BCM), or Instrument Panel Cluster (IPC) ............ .Logic lock-up is an internal software issue within a control module which may be cleared by disconnecting and reconnecting the affected module (re-booting the system). Electronic control modules can develop internal software issues which can cause erratic or no operation of the affected module. In most cases the module can be restored to proper operation by electrically disconnecting and reconnecting the affected module, just as you would reboot your home computer when it begins acting strangely. Repeated Logic Lock-up failures of the same module would normally warrent replacement of the affected module.