Interior Lighting

Interior Lighting

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The interior lighting system consists of the following components:

- Door ajar switches
- Instrument panel dimmer switch
- Interior/map lamps
- Luggage compartment lamp (if equipped)
- Luggage compartment/liftgate ajar switches (part of the latch assembly)
- Liftgate/Trunk Module (LTM) (if equipped)
- Puddle lamps
- SJB
- Vanity mirror lamps

The interior lighting system consists of 2 subsystems:

- Courtesy lamps
- Demand lamps

Courtesy Lamps

The courtesy lamps are controlled by the SJB. The courtesy lamp subsystem consists of the ajar switches, instrument panel dimmer switch, interior dome lamps, LTM (if equipped), and the puddle lamps. The SJB supplies voltage to the courtesy lamps when the SJB receives the required input.

Demand Lamps

The demand lamps are also controlled by the SJB via the battery saver relay. The demand lamps subsystem consists of the luggage compartment lamp (if equipped), all map/reading lamps, and the LH and RH vanity mirror lamps. The SJB energizes the battery saver relay to supply voltage to the demand lamps.

Interior Lighting Delay

The interior lighting delay feature provides temporary illumination of the courtesy lamps after the doors are opened and then closed. The interior lighting delay feature keeps the courtesy lamps on for a period of 25 seconds after all the doors, decklid or luggage compartment are closed. If during the 25-second delay time, the SJB detects that the ignition has been turned out of OFF, or if the vehicle is locked using the Integrated Keyhead Transmitter (IKT) or the keypad, the courtesy lamp illumination is discontinued.

Illuminated Entry

The illuminated entry requests the courtesy lamps to illuminate when the ignition is in the OFF position and either the IKT transmitter UNLOCK button is pressed, or the vehicle is unlocked using the keypad or driver door lock cylinder. The illuminated entry requests the courtesy lamps off after 25 seconds have elapsed, the ignition is switched out of off, the IKT transmitter LOCK button is pressed, or the vehicle is locked using the keypad.

Illuminated Exit

The illuminated exit requests the courtesy lamps to illuminate for 25 seconds when all doors are closed and the ignition key is removed from the ignition lock cylinder. The illuminated exit deactivates when the ignition key is inserted into the ignition lock cylinder, a door, liftgate or decklid becomes ajar, or 25 seconds have elapsed.

Theater Lighting

The theater lighting option ramps-up the courtesy lamps over 0.7 second when courtesy lamp activation is requested. The theater lighting feature ramps-down the courtesy lamps over 1.7 seconds when interior lighting deactivation is requested by any feature other than the panic alarm or battery saver.