Land Rover Discovery: Front Interior and Reading Lamps - Overhead Console

1. Left reading lamp
2. Interior lamp
3. Right reading lamp

The front interior and reading lamps are LED's located on the PCB in the overhead console. The lamps are manually controlled by a proximity sensing system or automatically controlled by the CJB.

The front interior lamp is switched on manually by placing a finger close to or touching the lamp lens to switch the lamp on or off.

The front interior lamp also has automatic operation controlled by the CJB.

When the doors are unlocked all of the interior lamps are illuminated. The lamps are extinguished 60 seconds after all doors are closed, when the engine is started or the vehicle is locked. The automatic illumination can be deactivated by touching the front interior lamp lens for 2 seconds. The automatic illumination is reactivated by touching the front interior lamp lens again for 2 seconds. The CJB controls the interior lamp operation using a Pulse Width Modulation (PWM) output to fade the interior lamps on and off.

The reading lamps are switched on manually by placing a finger close to or touching the lamp lens to switch the lamp on or off. The reading lamps are provided a voltage feed from the power saver relay within the CJB. The reading lamps are provided with a power supply until the power saver relay contacts are opened. This prevents excessive primary battery drain if one or both reading lamps are inadvertently left on.

REAR INTERIOR LAMPS

The rear interior lamps provide illumination via the automatic interior lighting controlled by the CJB.

Each lamp can be manually switched on or off by pressing the lamp lens which operates a switch internal to the lamp assembly. The rear interior lamps are provided a voltage feed from the power saver relay within the CJB. The lamps are provided with a power supply until the power saver relay contacts are opened. This prevents excessive primary battery drain if a door is inadvertently left open.

Two rear interior lamps are installed in the headliner adjacent to the rear grab handles. On 7-seat vehicles with third row seats, an additional rear interior lamp is installed in a central position above the third row seats

FOOTWELL LAMPS

A footwell lamp is located in each front footwell. The driver side footwell lamp is located in a bracket which is integral with the climate control system driver side floor duct. The passenger side footwell lamp is located in a bracket which is attached to the rear of the glovebox.

Each lamp comprises a halogen bulb installed in a bulb holder integrated into the vehicle instrument panel wiring harness. The footwell lamps are operated by a Pulse Width Modulation (PWM) output from the CJB to fade the footwell lamps on and off with the interior lamps. If the automatic illumination function has been disabled, the footwell lamps are also disabled.

APPROACH LAMPS

An approach lamp is installed in the underside of each door mirror.

Each approach lamp is powered by a fused permanent power supply to the Driver Door Module (DDM) and the Passenger Door Module (PDM) from the Engine Junction Box (EJB) and the CJB.

Each door module receives a signal from the CJB on the medium speed Controller Area Network (CAN) body systems bus to illuminate or extinguish the approach lamp. The approach lamps are active when the vehicle is unlocked or the engine is switched off and a front door opened.

Interior Lighting / Description and OperationVanity Mirror Illumination Lamp

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