Discovery electrical Manual — part 44
CIRCUIT OPERATION
Washer
The Rear Screen Wash Pump (M119) motor is
grounded at all times. The motor runs when battery
voltage is applied to the motor through the Rear
Screen Wash Switch (X222) when the switch is
switched to the WASH position.
Wiper
When the Rear Wiper Switch (X221) is pulled to the
WIPE position, the Multifunction Unit (MFU) (Z148)
applies ground to the Rear Wipe Relay (K183).
Battery voltage is then applied to the Rear Wiper
Motor (M120) from Fuse F18.
F3
CIRCUIT OPERATION
1
REAR WIPE/WASH
REAR WIPE/WASH
F3
2
CIRCUIT DIAGRAM
15
F 18
10 A
S2047
17
C215
0
[1]
P126
Fascia Fuse Box
X221
Rear Screen
Wipe Switch
1
2
C250
5
C250
18
C204
B
S253
E201
See Ground Dis-
tribution
X222
Rear Screen
Wash Switch
2
1
C249
5
4
C249
Interior Lamps
B
15
16
14
OU
RN
RN
See Fuse Details
S230
Z148
Multi–Function
Unit (MFU)
2
C120
1
C120
E200
See Ground Dis-
tribution
C205
M119
Rear Screen
Wash Pump
LGS
0
[1]
M
GLG
GLG
HJ8
S255
HJ8
4
REAR WIPE/WASH
F3
3
CIRCUIT DIAGRAM
K183
Rear Wiper Relay
NP
85
86
C281
F 18
10 A
P126
Fascia Fuse Box
87
S274
C281
2
15
18
C204
GLG
P126
Fascia Fuse Box
3
C206
S288
87a
See Fuse Details
See Ground Distribu-
tion
C408
GLG
B
30
B
23
C205
Z148
Multi–Function
Unit (MFU)
3
NG
4
C415
3
5
C277
4
C489
1
C415
8
E201
S2044
See Ground Dis-
tribution
E201
S438
See Ground Distribu-
tion
E401
M120
Rear Wiper Motor
[1]
Parked
[2]
Not Parked
HJ1
86
87
87a
30
85
N
HJ11
HJ11
GO
[1]
[2]
M
2
C408
1
GLG
NY
REAR WIPE/WASH
F3
2
CIRCUIT DIAGRAM
15
F 18
10 A
S2047
17
C215
0
[1]
P126
Fascia Fuse Box
X221
Rear Screen
Wipe Switch
1
2
C250
5
C250
18
C204
B
S253
E201
See Ground Dis-
tribution
X222
Rear Screen
Wash Switch
2
1
C249
5
4
C249
Interior Lamps
B
15
16
14
OU
RN
RN
See Fuse Details
S230
Z148
Multi–Function
Unit (MFU)
2
C120
1
C120
E200
See Ground Dis-
tribution
C205
M119
Rear Screen
Wash Pump
LGS
0
[1]
M
GLG
GLG
HJ8
S255
HJ8
4
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