Normal Operation

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

On vehicles without the memory feature, the driver door disarm switch provides a ground signal to the smart junction box (SJB) through circuit CPL28 (VT/BN), the switch, and ground circuit GD126 (BK/WH) allowing entry without setting off the alarm. The switch must operate before the mechanical lock unlocks. This is to prevent the anti-theft alarm from activating when it should have been disarmed.

On vehicles with the memory feature, the driver door disarm switch provides a ground signal to the driver door module (DDM) through circuit CPL28 (VT/BN), the switch and ground circuit GD126 (BK/WH). The DDM sends a network message to the SJB, which allows entry without setting off the alarm. The switch must operate before the mechanical lock unlocks. This is to prevent the anti-theft alarm from activating when it should have been disarmed.