Description

Interior Lighting

NOTE:
A = Hardwired; N = Medium speed CAN bus

CONTROL DIAGRAM - INTERIOR LIGHTING









CONTROL DIAGRAM - AMBIENCE LIGHTING









OPERATION
The CJB (central junction box) provides the power supplies to the interior lamps. The CJB (central junction box) controls the power supply to provide a fade on and off of the lamps. The lamps have 2 modes of operation; automatic and manual.
In the automatic mode the interior lamp functionality is controlled by the CJB (central junction box). The interior lighting is operated automatically by unlocking the vehicle or opening a door and the illumination period is subject to a timer controlled by the CJB (central junction box). When all doors are closed the interior lighting can be operated using the JaguarSense system on the front overhead console. Positioning your hand adjacent to the center lamp in the front roof console will switch all interior lamps on or off. The map reading lamps in the front overhead console can also be operated in the same way. The rear interior lamps in the rear overhead console can be operated using the conventional switches in the console.
Manual mode allows the interior lamps to be disabled from automatic operation. Positioning your hand on or near the center interior lamp in the front overhead console for more than 3 seconds will disable the automatic mode and confirmation will be displayed by a 'Manual Lighting' message in the instrument cluster. In manual mode the interior lamps can be still be operated manually but will not operate with unlocking of the vehicle or opening doors. To return to the automatic mode, position your hand on or near the center interior lamp in the front overhead console for more than 3 seconds. Automatic mode will be re-instated and confirmation will be given by an 'Automatic Lighting' message in the instrument cluster.
The driver's and passenger door approach lamps are controlled by the CJB (central junction box) and the driver's door and the passenger door modules respectively on receipt of medium speed CAN (controller area network) bus messages from the CJB (central junction box).
The CJB (central junction box) monitors the operation of the interior lamps and uses a power management strategy to turn off lamps, if a door is left open for example. If a door is left open or the doors are closed and the interior lamps are switched on, the interior lamps are turned off within 30 minutes by the power saver relay which is located in the CJB (central junction box). If the interior lamps are left on and the vehicle is locked, the interior lamps will be switched off within 20 seconds of the lock request.
The glovebox lamp operates independently of the interior lamps and is operated by a switch which activates the lamp when the glovebox lid is opened. The glovebox lamp is subject to the power management strategy and will be extinguished after 30 minutes by the battery saver relay if the lid is left open.

DESCRIPTION
The CJB (central junction box) receives the following inputs which affect the operation of the interior lamps:
- Ignition status
- Door latch switches
- Luggage compartment lid latch switch
- Glovebox lamp switch
- Unlock signal
- Front roof console interior lamp - 'JaguarSense'
- Front roof console map reading lamps - 'JaguarSense'
- Rear roof console map reading lamps
- Delayed power off relay
- Vanity mirror lamp switches
- Side and headlamp status (ambience lighting only).
The interior lamps fade on when any door is opened and fade off slowly, 20 seconds after the last door is closed.
The interior lamps can be disabled completely by holding your hand near the front center lamp of the 'JaguarSense' system for 3 seconds. The interior lamps are re-enabled by placing your hand near the front center lamp of the 'JaguarSense' for a further 3 seconds.
The interior lamps, in addition to exterior lamps, are switched on in the event of an accident. If an accident is detected by the RCM (restraints control module) , a high speed CAN (controller area network) bus message is sent to the CJB (central junction box) to switch on the interior lamps. In this case, the interior lamps cannot be switched off using the interior lamps switches or 'JaguarSense' feature and require diagnostics to reset the lamp functionality.