Isuzu Trooper (1998-2002 year). Manual — part 985
8D–474
WIRING SYSTEM
Parts Location (LHD)
Legend
(1) I-10
(2) I-9
(3) H-8, H-9, H-24
(4) Fuse Box
(5) C-16
(6) C-93
(7) H-5
(8) M-25
(9) H-10, H-11, H-53
(10) E-30
(11) H-42
(12) Relay and Fuse Box
D08RWA09
2
1
3
4
5
6
8
9
11
12
7
10
WIRING SYSTEM
8D–475
Heater and Air Conditioning
General Description
The circuit consists of pressure switch, A/C switch,
electronic thermostat, blower motor, fan switch,
magnetic clutch of A/C compressor, blower resistor
and relay.
The operation of A/C system is controlled by turning
A/C switch on and off. Electronic thermostat and PCM
can stop operation of A/C temporarily by disconnect-
ing magnetic clutch under the predetermined condi-
tions to adjust room temperature, preventing abnor-
mal rise of engine coolant and reduce engine load
while A/C is in operation.
Refer to Heating, Ventilation and Air Conditioning in
HVAC section.
8D–476
WIRING SYSTEM
Circuit Diagram (RHD 6VD1)-1
D08RY00128
0.5 LG
0.5 LG
B -1
BODY-RH
BODY-LH
FRAME
ENG.
5B
BODY
8B / R
8 B
+
_
P - 6
30B
P - 1
P - 5
P - 10
P - 7
P - 2
FL-1
80A MAIN
FL-4
30A CONDENSER FAN
F-6
15A RR COOLER
I-23
2
I-23
6
A/C SW
BLOWER
MOTOR
0.3 G/Y
I-42
I-42
I-42
1
3
2
16
0.5 LG
1
5W
B-19
0.5 BR
0.5 BR
0.5 P/G
H-24
H-51
13
1
H-16
7
H-16
2 L/R
I-41
I-18
I-18
I-18
I-18
1.25 L/O
1.25 L/Y
0.85 L/W
3
3
6
5
2
4
1
6
FAN SW
HEATER BEZEL
ILLUMINATION
I-23
I-23
I-18
I-18
3
5
4
1
0.3 R/G
0.85 G/R
ILLUMINATION
CONTROLLER (3)
RELAY ; TAIL (4)
H-20
1
2 B
2
BLOWER
RESISTOR
I-41
I-41
I-41
I-41
2L/B
2 B
1.25B
M
B-5
2
1
B-5
B-36
1
B-36
B-36
B-36
2
3
4
I-23
1
0.85W/G
3L/R
3L
C-19
25A BLOWER
0.3B
ELECTRONIC
THERMOSTAT
5W
3W
0.5 BR
1.25 L/O
0.5 LG/Y
0.3 G/Y
0.3 G/Y
RELAY ;
HEATER AND
A/C
C-20 10A
AIR CON.
0.5 BR
0.5 BR
RELAY;STARTER (1)
5W
H-14
16
H-26
2L/B
2
H-20
H-13
10
0.3 G/Y
0.5 LG
WIRING SYSTEM
8D–477
Circuit Diagram (RHD 6VD1)-2
D08RY00129
0.5 LG
X - 5
X - 5
X - 5
X - 5
1
4
RELAY ;
A/C THERMO
3
2
0.5 P/G
0.3 G/Y
1.25 B
X - 7
X - 7
X - 7
X - 7
4
3
2
1
H - 41
7
H - 41
5
H - 6
9
E - 3
1
0.5BR/Y
0.5BR/Y
0.5G/B
0.5G/B
0.5BR/Y
0.5 BR
PCM (E15)
PCM (B14)
0.5 G/O
0.5
G/W
0.5
G/W
0.5
G/W
RELAY;
A/C COMPRESSOR
MAGNETIC CLUTCH
0.5 LG
0.5 BR
C - 25
C - 25
PRESSURE SW
(CONDENSER)
2
H-41
12
C - 39
FENDER-RH
1
1
H-51
6
H-15
1
1
H-31
2
H-50
7
C-39
0.5 LG/Y
0.5 BR
0.5 BR
0.5 BR
0.5 BR
0.5 LG
0.5B
0.5B
3
B
0.5LG/B
0.5LG/B
0.5LG/B
R - 3
BODY-RR
X - 6
X - 6
X - 6
H-50
RR COOLER
CONNECTOR
X - 6
RELAY ; RR COOLER
1
2
X-19
X-19
5
3
3
4
C-25
3
TRIPLE SW
4
H-51
0.5 W/G
3
H-42
0.5 W/G
2
0.5 W/G
4
X-19
1
X-19
C-75
1.25L
1
H - 16
3
0.3G/Y
M
2
C-75
1.25B
(IF EQUIPPED)
RELAY; CONDENSER FAN
CONDENSER FAN
1.25 L/O
C-25
H-41
6
4
H-51
2
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