Interior Lighting

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

The rear electronic module (REM) controls the outputs to all interior lighting with the exception of the stepwell/puddle lamps which are controlled by the front electronic module (FEM). The courtesy lamp mode switch is hardwired to the instrument cluster module. When the courtesy lamp mode switch is placed in the desired position, the instrument cluster will send a message to the FEM and the REM through the SCP connection network. The liftgate and left/right power sliding door ajar switches are hardwired to the REM. When any door is ajar, the module which the door ajar switch is hardwired to will send a message through the

SCP link to the appropriate module in order to enable the courtesy lamps. The REM and FEM will command the appropriate lamps ON when an input is received from the courtesy lamp mode switch or from any door ajar switch. Demand lighting is controlled by the individual switch unless the switch is placed in the courtesy position. If a demand lamp switch is in the courtesy position, the switch will function when the courtesy lamps are commanded ON. 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. For additional information, refer to SWITCHED SYSTEM POWER (SSP) . A failure of all or any of the SSP features will cause inoperative interior lighting. When diagnosing interior lighting it is essential to determine if all related symptoms and DTCs are controlled by the SSP feature. The illuminated exit feature can be enabled or disabled using the diagnostic tool, for additional information, refer to MODULE CONFIGURATION .