Interior Lighting

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. 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
Instrument panel dimmer switch
Interior/map lamps
Luggage compartment lamp
Vanity mirror lamps
Puddle lamps (if equipped)
Door ajar switches
Luggage compartment lid ajar switch
Ambient lighting module (if equipped)
Ambient lighting switch (if equipped)

The interior lighting system consists of up to 3 subsystems:

Courtesy lamps
Demand lamps
Ambient lighting (if equipped)

Courtesy Lamps

The courtesy lamp subsystem consists of the interior dome lamps, luggage compartment lamp, and the puddle lamps (if equipped). The courtesy lamps illuminate as a system when requested by the SJB during such conditions as an open vehicle door.

Demand Lamps

The demand lamps subsystem consists of the front map lamps and the left and right vanity mirror lamps. The demand lamps illuminate individually when the vehicle occupant activates them.

Ambient Lighting

Both the courtesy and the demand lamps are controlled by the SJB. The SJB sets DTCs if certain circuit failures exist with the interior lighting system.

The ambient lighting feature allows the vehicle occupant to lightly illuminate the interior of the vehicle in a variety of colors. The ambient lighting system consists of the following:

Ambient lighting switch (located in the center console)
Ambient lighting module (located in the center console)
LEDs (hardwired in the ambient lighting electrical harness)
- Located on the center console cupholder, the storage bin, and the front and rear footwells

The ambient lighting system is powered through the accessory delay relay.