Land Rover Discovery 99my To 03my Electrical Library 3rd Edition Rover Manual

DESCRIPTION AND OPERATION
4.100DISCOVERY SERIES II
Slow speed operation
Operation of the front screen wash/wipe switch to the slow wipe position, connects the feed 
from fuse 19 in the passenger compartment fusebox to the front screen wash/wipe switch 
on a GS wire, via header C0292.
The feed passes through the slow wipe switch contacts and is connected to the windscreen 
wiper motor on an RLG wire. The windscreen wiper motor is connected to earth header 
C0017, via header C0288 on a B wire. The feed is...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.101
The feed passes through the switch contacts and is connected from the switch on an RLG 
wire to the wiper motor. When the wiper motor reaches the park position, the park switch 
moves to power the wipers to their park position. The IDM removes the earth for the relay 
coil preventing further wiper operation.
The BCU pin C0660-21 is connected on a WLG wire to the wiper delay switch, which is 
connected on a B wire to earth header C0551. The BCU provides...

DESCRIPTION AND OPERATION
4.102DISCOVERY SERIES II
Washer operation
When the switch stalk is pulled, a feed from fuse 19 is connected on a GS wire, via header 
C0292, to the wash/wipe switch. The feed passes through the washer switch contacts and 
is connected from the switch on an LGO wire, through header C0289, to the washer pump 
and the BCU pin C0661-11. The feed operates the washer pump motor which is connected 
on a B wire to earth eyelet connector C0564-1.
The feed to the BCU is interpreted by the...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.103
REAR WIPERS AND WASHERS
DESCRIPTION
General
The rear wiper is operated from a latching push button switch located on the right hand side 
of the instrument pack. The rear wash/wipe is operated from a non-latching push button 
switch also located on the right hand side of the instrument pack. The rear wiper park facility 
operates with the ignition switch in positions I or II. The rear wiper and washer only operates 
with the ignition switch in position...

DESCRIPTION AND OPERATION
4.104DISCOVERY SERIES II
OPERATION
Rear Wiper and Washers Supply
Circuit supply
A feed from the battery positive terminal is connected on an R wire to the engine 
compartment fusebox, where it passes through fusible links 1, 7 and 8. Fusible links 1 and 
7 are connected in series.
A feed from fusible links 1 and 7 is connected to the contacts of the auxiliary circuits relay 
located in the engine compartment fusebox.
A feed from fusible link 8 is connected from the fusebox, on...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.105
The reverse lamp switch is connected is connected on a GN wire, via header C0287 LHD/
C0294 RHD, to pin C0661-8 on the BCU. When the reverse lamp switch is operated, the 
feed from fuse 25 passes through the switch to the BCU which uses the signal to function 
the rear wiper accordingly.
Rear Wipers and Washers Operation
The IDM is connected to pin C0661-1 of the BCU via header C0293 LHD/ C0292 RHD on 
an SK wire. This connection is the serial data bus...

DESCRIPTION AND OPERATION
4.106DISCOVERY SERIES II
Washer operation
When the rear screen washer switch is operated, a feed from fuse 30 in the passenger 
compartment fusebox is connected on a GLG wire to the switch. The feed passes through 
the switch contacts and is connected on an LGS wire, via header C0293, to the rear screen 
washer pump. The pump is connected on a B wire to earth eyelet connector C0564-1. The 
feed is also connected from the header C0293 on an LGS wire to pin C0660-20 on the BCU....

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.107
BRAKE/REVERSE LAMPS
DESCRIPTION
Brake Lamp Description
The brake lamps are operated by a switch mounted on the pedal box. The switch, when 
operated, supplies power to two brake lights located in the tail lamp units and a high 
mounted brake light. All brake light bulbs are rated at 21 Watts. A feed is provided to the 
trailer pick-up (if fitted) when the brake switch is operated. When the brake light switch is in 
the open position feeds are routed...

DESCRIPTION AND OPERATION
4.108DISCOVERY SERIES II
Brake Lamp Operation
A feed from fuse 25 in the passenger compartment fusebox is connected by a GO wire to 
the brake pedal switch.
When the brake pedal switch is operated, the switch contact closes and allows current to 
flow on a GP wire, from the switch, through header joints C0287 LHD/C0290 RHD and 
C0295. From header C0295 a connection on a GP wire allows current flow to the LH brake 
lamp. Another connection from header C0295 on a GP wire, goes...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.109
When the reverse lamps are on, a splice joint A13 between headers C0287 LHD/C0294 
RHD and C0295, gives a feed on a GN wire to the interior mirror.
The feed supplied to the interior mirror will change the interior mirror to the undipped 
condition, if the interior mirror is dipped. The interior mirror will remain in the undipped 
condition as long as a feed is supplied. This feature ensures that the interior mirror is in the 
undipped condition when...