Description
Description
General
The interior lighting is controlled by the Body Control Unit (BCU) which is located below the front passenger seat. The interior lighting comprises the following lamps:
- Front interior lamp unit
- Rear interior lamp unit
- Upper tail door load space lamps (2 off)
- Luggage compartment load space lamp
- Fascia mounted sill lamps (2 off)
- Under fascia footwell lamps (2 off)
- Door mirror approach lamps (2 off)
- Puddle lamps (4 off).
The interior lamps have two modes of operation; automatic or manual. In the automatic mode the interior lamp functionality is controlled by the BCU on receipt of various input signals. In manual mode the lamps can be switched on and off using the momentary button adjacent to the front interior lamp or can be disabled completely using the same switch.
NOTE: The LED illumination of the front door pockets and the front and rear interior door handles is a function of the LCM and only operates when the light controls switch is in the side lamp or headlamp positions.
The following table shows the bulbs used for the interior lighting and their type and rating:
Front and Rear Interior Lamps and Map Reading Lamps
The front and rear interior lamp assemblies are similar in design. The front interior lamp switch is connected directly to the BCU and controls the manual operation of the interior lamp functionality. The rear interior lamp switch is used only to switch the lamp on and off.
The map reading lights have a nonadjustable beam and are controlled via separate switches. Both the interior and map reading lamps use capless 5 W bulbs.
Luggage Compartment Lamps
The luggage compartment lamps comprise one lamp unit located on the RH side trim panel adjacent to the auxiliary power socket, and two lamps located in the interior trim panel of the upper tail door. All of these lamps are of the same design and use capless 5 W bulbs. The lamps are controlled by the BCU and operate on the automatic interior lamp functionality.
Glovebox Lamp
The glovebox lamp is located inside the glovebox at the top adjacent to the latch. The lamp comprises a festoon 5 W bulb. The lamp housing also incorporates a plunger type switch which is activated to switch the lamp on when the glovebox lid is opened.
Vanity Mirror Illumination Lamps
The vanity mirror lamps are located behind a hinged cover, either side of the mirror glass. A festoon type bulbs fitted in contacts behind each lamp lens. The lamps are activated by a simple switch which operates when the mirror cover is lifted.
Footwell Lamps
Two types of footwell lamps are fitted. Two directional sill lamps are located in the front of the fascia and illuminate the sill area. These lamps use 3 W capless bulbs.
Two further footwell lamps are located in the lower fascia closing panels and illuminate the area below the fascia. These lamps use 5 W capless bulbs. The lamps are controlled by the BCU and operate on the automatic interior lamp functionality.
Door Puddle Lamps
Each of the doors is fitted with a puddle lamp to illuminate the ground below the door when the door is open. The front door puddle lamps are located in the lower face of the door, facing the ground. The rear door puddle lamps are located in the bottom of the door trim panel.
The puddle lamps use a capless 5 W bulb. The puddle lamps are controlled by the BCU and operate on the automatic interior lamp functionality.
Door Mirror Approach Lamps
The exterior mirror housings are fitted with a lamp which illuminates the area below the front door. The approach lamps comprise a housing located inside the mirror and bulb holder with harness connector. The housing contains a plastic lens which directs a beam of light in the required area. The approach lamps use a capless 6 W bulb.
The lamps are controlled by the BCU via a dedicated relay which is located at the rear of the passenger compartment fusebox.
Diagnostics
Diagnostics for the interior lamps is limited to a check of the function of the front interior lamp switch. The BCU can be interrogated using TestBook/T4 to establish the correct operation of the front interior lamp switch the door switches and the tail door switches. Refer to the Body control Unit section for further details of BCU diagnostic checks.