Operation CHARM: Car repair manuals for everyone.

Alarmed State

The CTD system will enter the alarmed state from the armed state if any door opens. The horns and the exterior lights will alternate ON and OFF for approximately 2 minutes or until an UNLOCK command is received by the BCM. If the BCM does not receive an UNLOCK command, the CTD system will go back to the armed state. The BCM will request the security indicator to remain OFF. The CTD system will change from the alarm state to the OFF state if the Vehicle Control Module (VCM)/Powertrain Control Module (PCM) receives a valid Passlock ignition key rotation.