Interior Lighting

WARNING: This page is about a different car, the 2002 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

The FEM controls the outputs to all interior lighting. The interior lamps include: courtesy lamps, dome lamps, & map lamps. The lamps will be illuminated if the driver or front passenger door is ajar. The switches are hardwired to the FEM. When any of the two doors are opened, the FEM will command the interior lamps through the SCP network to the FEM. The right & left rear ajar switches are hardwired to the REM. When any of these doors are ajar, the REM will send a command through the SCP network, to the FEM. The FEM will command the appropriate interior lamps on.

The FEM also handles the grounds for the glove box & the visor lamps. Fault management of the interior lamps will provide limited functionality in the event of certain dome or lighting mode inputs, vehicle speed or ignition switch failures. All interior lighting is powered by the switched system power (SSP) feature (refer to SWITCHED SYSTEM POWER ). A failure of any or all of the SSP feature(s) could cause inoperative interior lighting. When diagnosing the interior lighting, it is essential to determine if all relative symptoms & DTCs are controlled by the SSP feature.