Door Ajar Warning Indication (Base Cluster Only)
WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
The rear door switches and the decklid ajar switch are directly hardwired to the REM. The door switches for the front of the vehicle are directly hardwired to the FEM. The FEM and REM both use the multiple inputs from the door switches and the decklid ajar switch to determine whether the doors and the decklid ajar switch are in the opened or closed position. The door ajar status is sent to the instrument cluster from both the FEM and REM over the communication network.