Control Diagram: Disarming

The CJB will disarm the active anti - theft system when it receives an unlock request from the smart key or, on vehicles with passive entry, when the smart key is sensed and the driver or passenger door handles are pulled.

The CJB can selectively disarm parts of the active anti - theft system to prevent false alarm activation under certain conditions as follows:

• When the vehicle active anti - theft alarm system is armed in volumetric mode, if the vehicle battery voltage decreases to less than 9 V, the CJB will disable the volumetric mode and remain in the perimeter mode only. This prevents false alarm activation because the intrusion detection modules do not operate below 9 volts.
• On vehicles fitted with a battery backed sounder, if the vehicle battery voltage decreases from 9.5 to 9 V in more than a 30 minute period, the CJB de - activates the battery backed sounder 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 CJB will not generate the 'heartbeat' signal to the battery backed sounder. If the sounder fails to receive the 'heartbeat' signal, it interprets this as tampering with the CJB and the sounder self activates. If the battery voltage subsequently rises above 9.5 V, the CJB will re - arm the battery backed sounder.
• If the vehicle is unlocked using the unlock button on the smart key and, within 45 seconds, a hinged panel is not opened, the CJB automatically re - locks the vehicle and re - arms the active anti - theft system (if the auto re - lock feature is enabled). This prevents leaving the vehicle unlocked and disarmed by accidental operation of the smart key unlock button.