Anti-Theft - Active (G1818046): Operation: Disarming

The BCM/GWM will disarm the active anti-theft system to prevent false alarm activation under certain conditions as follows:

1. When the active anti-theft system is armed in volumetric mode, if the vehicle battery voltage decreases to less than 9 volts, the BCM/GWM will disable the volumetric mode and remain in perimeter mode only. This prevents false alarm activation because the volumetric sensor cannot operate correctly below 9 volts.
2. On vehicles fitted with a BBUS, if the vehicle battery voltage decreases from 9.5 to 9 volts in more than a 30 minute period, the BCM/GWM de-activates the BBUS and, if required, will use the vehicle horns to sound an audible alarm trigger warning. This prevents false alarm activation. At voltages below 9 volts, the BCM/GWM will not generate the 'heartbeat' signal to the BBUS. The BBUS interprets this as the CJB has been tampered with and activates its sounder. If the battery voltage subsequently rises to more than 9.5 volts, the BCM/GWM will re-arm the BBUS.
3. If the vehicle is unlocked using the unlock switch on the smart key and, within 40 seconds a hinged panel is not opened, the BCM/GWM automatically re-locks the vehicle and re-arms the active anti-theft system. This prevents leaving the vehicle unlocked and disarmed by accidental operation of the smart key unlock switch.