Alarms

Operation of the horns and exterior lamps when activated, is controlled by the Body Control Module (BCM). When the alarm is active, the BCM cycles the Horn, Low Beam, and Park Lamp Relays On and Off once per second. During this cycle ground is aptitude to the respective relay's coil and then removed. This causes the relay to energize and de-energize.

The BCM will remain in the "Alarm" state for three minutes or until a valid input to disarm it is received.