Discovery II (LT) V8-4.0L (2002)
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Courtesy Lamp: Description and Operation
Interior Lamps - Automatic Operation
Interior Lamps - Automatic Operation
The feed from fuse 20 in the passenger compartment fusebox is connected to the header C0289 LHD/C0294 RHD. From the header the feed is
connected on a P wire to the ignition switch illumination bulb. The earth connection from the ignition switch illumination is connected on a PU wire to
the BCU pin C0663-9, via header C0285 LHD/C0294 RHD.
On Korean vehicles only, two feeds on P wires are connected from header C0723 to the rear interior lamp and the load space lamp. The front interior
lamp/infra-red sensor is also connected on a P wire from splice joint A2.
With the interior lamps set for automatic operation, switches located in the front and rear door lock motors, complete an earth path from the BGU. The
interior lamps receive a feed from fuse 20 in the passenger compartment fusebox, via headers C0289 LHD/C0294 RHD and C0723 on P wires.
The earth path for the LH or RH (driver's) door switch is from the BGU pin C0660-17 to the LH or RH front door lock motor on a PW wire, via header
C0287. The earth is connected on a B wire from the LH or RH door switch to earth header C0017 LHD/C0018 RHD, via header C0288 (LHD only).
The earth paths for the LH or RH (passenger) door switch, tail door switch and LH and RH rear door switches is from the BCU pin C0660-4 to header
C0291 LHD/C0285 RHD on a PLG wire.
From the header C0291 LHD/C0285 RHD a PLG wire is connected to connector interface C0464-1/C0733-1. From the connector interface the earth
continues on a PW wire to the LH or RH (passenger) door switch. The earth is connected from the switch on a B wire to earth header C0018 LHD/
C0017 RHD.
From the header C0291 LHD/C0285 RHD a PLG wire is connected to the tail door switch and the LH and RH rear door switches. The earth from the tail
door switch is connected on a B wire to earth header C0706. The earth from the LH and RH rear door switches are connected on B wires to earth header
C0552.
When a door is opened the BCU provides earth paths from the interior lamps, the load space lamp and the ignition switch illumination through the BCU.
The earth path(s) from the lamp(s) is on PU wires, through header C0723 and C0285 LHD/C0294 RHD to the BCU pin C0663-9.
