Range Rover 2. Electrical Manual — part 57
HEATING AND VENTILATION (WITH A/C)
K4
8
CIRCUIT DIAGRAM
M
Z253
Heating Ventila-
tion and Air
Conditioning
Control Unit
(HEVAC)
14
15
16
18
9
C246B
BG
N
BN
BW
NU
4
3
2
1
C218
K219
A/C Aspirator
Diesel
Petrol
4
C121
C571
9
C572
Z132
Engine Control
Module (ECM)
7
C106
C506
1
C505
Z132
Engine Control
Module (ECM)
24
C572
BS
5
C571
C121
Diesel
Petrol
28
C507
BS
6
C506
C106
12
C102
C202
13
C246B
Z253
Heating Ventila-
tion and Air
Conditioning
Control Unit
(HEVAC)
1
C202
C102
HEATING AND VENTILATION (WITH A/C)
K4
9
CIRCUIT DIAGRAM
REV: 02/98
K218
Ambient Air
Sensor
C246B
S206
UO
4
2
12
8
C245
1
C250
2
C250
WB
7
C245
Z253
Heating
Ventilation and
Air Conditioning
Control Unit
(HEVAC)
Z253
Heating
Ventilation and
Air Conditioning
Control Unit
(HEVAC)
UB
SO
GY
2
C210
1
C210
BW
10
C246B
BW
1
C221
X303
Evaporator
Temperature
Sensor
X304
Water
Temperature
Sensor
2
C221
1
C222
2
C222
BW
X305
Sun Sensor
BW
13
C204
C104
14
C104
C204
Up to VIN 381430
From VIN 381431
Up to VIN
381430
From VIN
381431
HEATING AND VENTILATION (WITH A/C)
K4
10
CIRCUIT DIAGRAM
S101
E154
1
C166P
7
C244
[2]
7
C102
C202
BY
1
C162
[1]
2
C162
WLG
1
C166D
WLG
1
C119
2
C166P
WLG
See Ground Dis-
tribution
Z253
Heating Ventila-
tion and Air
Conditioning
Control Unit
(HEVAC)
X315
A/C Dual Pressure Switch
[1]
< 1.2 Bar (17 psi)
[2]
> 30 Bar (435 psi)
[3]
> 2.4 Bar (35 psi) <
21 Bar (305 psi)
K107
Compressor
Clutch
K107
Compressor
Clutch
Diesel
Petrol
B
[3]
HEATING AND VENTILATION (WITH A/C) (PETROL)
K4
11
CIRCUIT DIAGRAM
29
C507
[2]
1
C106
C506
YB
2
C143
[1]
1
C143
11
C202
YB
Z132
Engine Control
Module (ECM)
X312
Pressure Switch 2
[1]
< 13 Bar (189 psi)
[2]
> 17 Bar (247 psi)
Z253
Heating Ventila-
tion and Air
Conditioning
Control Unit
(HEVAC)
8
C244
C102
30
F 31
30 A
6
C172
1
C198
BN
P125a
Engine Compart-
ment Fuse Box
M113
Left Condenser
Fan Motor
2
C198
C
K4-12
BN
M
Petrol
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