Interior Lighting
Interior Lighting
NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).
The interior lamps are controlled by the SJB. The interior lighting system consists of the following components:
- Ambient lighting switch
- Interior Lighting Control Module (ILCM)
- Instrument panel dimmer switch
- Door ajar switches
- Interior lamp(s)
- Cargo lamp
- Puddle lamps
- Vanity mirror lamps
- SJB
NOTE: All the door ajar switches are integral to the door latch except for the rear door ajar switches on SuperCab vehicles. The rear door ajar switches on SuperCab vehicles can be replaced independently of the door latch.
The interior lighting system consists of 3 subsystems:
- Courtesy lamps
- Demand lamps
- Ambient lighting (if equipped)
Courtesy Lamps
The courtesy lamp subsystem consists of the door ajar switches, the cargo lamp, the interior lamp(s), the instrument panel dimmer switch and the puddle lamps (if equipped). The SJB supplies voltage to the courtesy lamps when the SJB receives the required input. The lamps that are part of the courtesy lamp subsystem are:
- Interior courtesy lamps
- Cargo lamp
- Puddle lamps (if equipped)
Ambient Lighting
The ambient lighting feature provides illumination to the center console cup holders, the storage bin and the front and rear footwells.
There are 3 different color LEDs (red, blue and green) housed within each LED assembly. By illuminating various color combinations, the LEDs are able to produce 5 different colors of ambient light. With each press of the ambient lighting select switch, the ILCM cycles through a different color variation or turns the ambient lighting feature off. With each press of the ambient lighting dimmer switch, the ILCM changes the brightness setting of the ambient lighting. The module retains the last color and brightness setting between uses.
When the illuminated entry feature is active, the ambient lighting defaults to a pre-set color (white) and brightness setting. When all the doors are closed and the illuminated entry is no longer active, the ambient lighting returns to the last color and brightness setting that was set by the operator.
The color and brightness settings can only be changed when the ignition switch is in the RUN position, the parking lamps are on and all the doors are closed.
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 are closed. If during the 25-second delay time the SJB detects that the ignition has been switched out of OFF, or if the vehicle is locked using the Remote Keyless Entry (RKE) transmitter or the keyless entry keypad, the courtesy lamp illumination is discontinued.
Dome Defeat
When the instrument panel dimmer switch is in the DEFEAT position, the illuminated entry and exit features do not turn the courtesy lamps on, however the timer for each feature is still active. If the instrument panel dimmer switch is moved out of the DEFEAT position before the 25-second timer expires, the courtesy lamps are illuminated until the 25-second timer has elapsed.
Illuminated Entry
The illuminated entry requests the courtesy lamps, the dimmable backlighting and the ambient lighting (if equipped) to illuminate when the ignition is OFF and either the RKE transmitter UNLOCK button is pressed, or the vehicle is unlocked using the keyless entry 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 RKE transmitter LOCK button is pressed.
- 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 becomes ajar.
- 25 seconds have elapsed.
Theater Lighting
The theater lighting feature 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.
Demand Lamps
The demand lamps are provided voltage from the battery saver relay (part of the SJB). The SJB energizes the battery saver relay to supply voltage to the demand lamps. The lamps that are part of the demand lamp subsystem are:
- Map/reading lamps
- Vanity mirror lamps
Battery Saver
NOTE: Time-out is 1 minute if the vehicle has less than 80 km (50 miles).
The battery saver is internal to the SJB and provides automatic shut-off of the courtesy and demand lamps after 10 minutes in order to save battery voltage.