Interior Lighting: Notes
WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The smart junction box (SJB) is also known as the generic electronic module (GEM).
The interior lighting system consists of the following components:
- SJB
- Bussed electrical center
- Illumination dimmer switch
- Dome/map lamps
- Door ajar switches
- Luggage compartment lamp
- Luggage compartment lid ajar switch
- Ambient lighting module (if equipped)
- Ambient lighting switch (if equipped)
The interior lighting system may consist of up to 3 subsystems:
- Courtesy lamps
- Demand lamps
- Ambient lighting (if equipped)
The bussed electrical center (BEC) supplies power to the interior lighting system through the SJB. The SJB sets DTCs if certain circuit failures exist with the interior lighting system.