Principles of Operation: Notes
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The Body Control Module (BCM) controls all the interior lighting functions and timing by monitoring inputs from the following:
- door ajar switches
- ignition state
- instrument panel dimmer switch (monitored by the Steering Column Control Module (SCCM))
- Remote Keyless Entry (RKE) system
- vehicle speed
The BCM turns off the courtesy lamps when the vehicle speed exceeds 15 km/h (9 mph) or 5 km/h (3 mph) for the puddle lamps, unless the courtesy lamps are turned on using the instrument panel dimmer switch.