The interior lamps system consists of the following two functions:
| • | An illuminated entry that activates the interior lamps. |
| • | An interior lamps delay that deactivates all interior lamps after 10 minutes. |
Illuminated Entry
When the body control module (BCM) is in an active state (awake) it energizes the delayed interior lamps relay. When energized the delayed interior lamps relay supplies voltage to all of the interior lamps, including the illuminated entry lamps. The illuminated entry lamps are turned on when they receive a ground from the interior lamps relay. When the ignition is in the LOCK position the BCM will energizes the interior lamps relay under the following conditions:
| • | Manually unlocking the driver side door lock. |
| • | A change in door jamb input status (open or close a door). |
| • | The use of the remote keyless entry (RKE) to unlock the side doors. |
When the delayed interior lamp relay and the interior lamp relay are energized the following interior lamps will illuminate:
| • | The dome lamp |
| • | The front side door courtesy lamps |
| • | The roof rail courtesy lamps (depending on their individual switch positions) |
The above lamps also turned ON by the interior lamp switch, whenever the headlamp switch pulled out and the BCM is awake.
Delayed Interior Lighting (DIL)
Provides a similar function for the interior lamps as a retained accessory power feature. The BCM will energize the delayed interior lamps relay when the BCM is in the active state (awake). When the delayed interior lamps relay is energized it supplies voltage to all the interior lights. The delayed interior lamps relay will deactivate all interior lamps after 10 minutes once the BCM becomes inactive (ignition OFF and no BCM input activity.)
IP Compartment Lamp
The IP compartment lamp illuminates when the delayed interior lamps relay supplies voltage to the IP compartment lamp and the IP compartment switch provides a ground path.
Rear Compartment Lamp
When the rear compartment is opened, the rear compartment courtesy lamp switch sends two ground signals. The first signal is an input to the BCM that wakes the BCM. When the BCM wakes up it will then energize the delayed interior lamps relay, suppling voltage to the rear compartment courtesy lamp. The rear compartment courtesy lamp switch also provides a second ground for the rear compartment courtesy lamp in order to illuminate the lamp. The BCM also activates the rear compartment lid release open indicator lamp in the instrument cluster.
Rear Side Door Courtesy Lamps
When the rear side door is opened, the rear side door jamb switch sends two ground signals. The first signal is a door jamb input to the BCM that wakes the BCM. When the BCM wakes up it will then energize the delayed interior lamps relay, suppling voltage to the rear side door courtesy lamp. The rear side door jamb switch also provides a second ground for the rear side door courtesy lamp and the lamp will illuminate.
Reading Lamps
The reading lamps receive voltage from the delayed interior lamps relay anytime the BCM is awake. The reading lamps receive ground from their individual switches.
Sunshade Illuminated Mirror Lamp
The sunshade illuminated mirror lamps receive voltage from the delayed interior lamps relay anytime the BCM is awake. The sunshade illuminated mirror lamps receive ground from their individual switches.
Roof Rail Courtesy Lamps
The roof rail courtesy lamps receive voltage from the delayed interior lamps relay anytime the BCM is awake. The roof rail courtesy lamps have a three position switch. When the switch toward the rear of the vehicle the roof rail courtesy lamp will be disabled. When the switch is in the center position the roof rail courtesy lamp receives a ground from the interior lamps relay when the illuminated entry feature is active. Placing the roof rail lamp switch toward the front of the vehicle will ground the roof rail courtesy lamp and illuminate it at all times.
