Battery Saver
Note. Time-out is 10 seconds if the vehicle is in Factory mode or 0 seconds if the vehicle is in Transport mode
The provides automatic shut-off of the courtesy and demand lamps after a time-out period when the ignition is OFF. A timer in the BCM starts when any of the following occur
- the ignition is changed to OFF
- any door or luggage compartment lid/liftgate becomes ajar
- the UNLOCK button of the transmitter is pressed
- a door is unlocked using a key
- the door lock switch is pressed
When 10 minutes (30 minutes for demand lamps) have elapsed, the automatically shuts the voltage off to the lamps. The timer restarts (voltage is restored if the BCM is in battery saver mode) if any of the following occurs
- the ignition is changed out of OFF
- any door, luggage compartment lid or liftgate becomes ajar
- the UNLOCK button of the transmitter is pressed
- a door is unlocked using a key
- the door lock switch is pressed
Courtesy Lamps
The courtesy lamp subsystem consists of the interior/map lamps, the door ajar switches and the BCM . The turns the courtesy lamps on when a door is opened or when an unlock signal is received from the Remote Keyless Entry (RKE) transmitter.
Illuminated Entry/Exit
The illuminated entry and exit features provide temporary illumination of the parking lamps, the dimmable backlighting, the ambient backlighting and the courtesy lamps. Refer to the following table for additional information.
Note. An arbitrator (software programming) within the determines which actions take precedence over others (for example, an open door keeps the courtesy lamps on even when a command to lock the doors is received)
Note. For vehicles without Intelligent Access (IA), the timer for the backlighting and ambient lighting is reset to 25 seconds when the key is inserted or removed from the ignition lock cylinder
| Action | Parking Lamps | Courtesy Lamps | Dimmable Backlighting | Ambient Lighting |
|---|---|---|---|---|
| RKE transmitter or mechanical unlocking of the doors | On for 25 seconds | On for 25 seconds | On for 25 seconds | On for 25 seconds |
| RKE transmitter or mechanical locking of the doors | Off | Off | Off | Off |
| Open a closed door after previously unlocking (no ignition state change since unlock) | Off (on for remaining time if unlocked from transmitter or mechanical unlocking of the doors) | On | On | On |
| Close all doors | Off | On for 25 seconds | On for 25 seconds | On for 25 seconds |
| Ignition changed to ON | Off | On for 25 seconds | Off | On |
| Ignition changed out of ON | Off | On for 25 seconds | On for 25 seconds | On for 25 seconds |
| Open a door after the ignition is changed to OFF | Off | On | Off | Off |
| Ignition is OFF and doors are unlocked from the door lock switch | Off | On for 25 seconds | Off | Off |
| Ignition is OFF and doors are locked from the door lock switch | Off | Off | Off | Off |
LAMPS CONDITION CHART
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.
Demand Lamps
The demand lamps subsystem consists of the map/reading lamps and the luggage compartment lamp (sedan) or cargo lamp (5-door) lamp. The energizes the battery saver relay to supply voltage to the demand lamps when the battery saver feature is not active.
Ambient Lighting
The ambient lighting LEDs illuminate the cup holders (front and rear) and the front and rear footwell areas. The ambient lighting subsystem consists of the ambient lighting switch, the ambient lighting module, and the harness with hardwired LEDs located within the floor console and under the instrument panel footwell areas. The ambient lighting is operational when the ignition is in any state other than OFF (the exception is when it is used in conjunction with the illuminated entry/exit features). The ambient lighting switch cycles the LEDs through 7 different color combinations or to turn the ambient lighting off.
SPECIAL TOOL(S) SPECIFICATION Fluke 77-IV Digital Multimeter FLU77-4 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Flex Probe Kit NUD105-R025D or equivalent
Scheme 34
The ambient lighting module provides voltage and ground to the LEDs. The ambient lighting switch is an input to the ambient lighting module. With each press of the ambient lighting switch, the ambient lighting module cycles through a different color variation or turns the ambient lighting feature off. There are 3 different color (red, blue and green) LEDs housed within each LED assembly. By illuminating various color combinations, the LEDs are able to produce 7 different colors of ambient light. The module retains the last color setting between ignition cycles.
Field-Effect Transistor (FET) Protection
A FET is a type of transistor that, when used with module software, monitors and controls current flow on module outputs. The FET protection strategy prevents module damage in the event of excessive current flow.
The BCM utilizes a FET protective circuit strategy for many of its outputs (such as a turn lamp output circuit). Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down when a fault event is detected. A short circuit DTC sets when the fault event occurs.
The circuit remains off until the fault is corrected and the ignition is cycled off and then back on, the module resets the FET protection and allows the circuit to function.
The FET protected circuits for the interior lighting system are the interior lamp voltage supply, courtesy lamp ground and ambient lighting module voltage supply circuits.