1998 ISUZU TROOPER relay

8D – 444 WIRING SYSTEM
Parts Location (LHD 4JG2)
Legend
(1) L-5
(2) I-10
(3) I-9
(4) F-5
(5) B-27
(6) C-15
(7) H-33
(8) R-4
(9) H-7, H-9, H-24, H-25, H-62
(10) B-26
(11) C-16
(12) H-46
(13) Fuse Box
(14) B-18(15) C-68
(16) B-62
(17) H-4, H-5
(18) C-67
(19) E-36
(20) C-9
(21) E-19
(22) B-6, B-7 (Alarm and Relay Control Unit)
(23) B-1, B-2
(24) Relay and Fuse Box
(25) C-39
(26) H-12, H-14, H-16, H-21, H-48
(27) E-2
(28) E-20
D08RW897
123
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28

8DÐ462 WIRING SYSTEM
7-3 While The Engine Is Operating, The Oil Pressure Warning Light Does Not Go Off
·
IS THE ENGINE OIL PRESSURE NORMAL?
YES
·WITH THE OIL PRESSURE SWITCH CONNECTOR
E-1 OR E-2 DISCONNECTED, DOES THE
WARNING LIGHT GO OFF?
YES
REFER TO THE “ENGINE” SECTION
NO
REPAIR A SHORT CIRCUIT BETWEEN 1 E-1
OR 2 E-12 AND THE METER
NO
·WHILE THE ENGINE IS OPERATING, IS THERE
CONTINUITY BETWEEN THE OIL PRESSURE SWITCH
CONNECTOR 1 E-1 AND THE BODY GROUND?
YES
REPLACE THE METER ASSEMBLYREPLACE THE OIL PRESSURE SWITCH
NO
7-4 Even When The Fuel Tank Is Full With Fuel, The Low Fuel Warning Light Lights Up
·WHEN THE ALARM & RELAY CONTROL UNIT
CONNECTOR B-7 IS DISCONNECTED,
DOES THE WARNING LIGHT GO OFF?
YES
·IS THE FUEL TANK UNIT NORMAL?
YES
REPLACE THE METER ASSEMBLY
REPAIR A SHORT CIRCUIT BETWEEN THE ALARM
& RELAY CONTROL UNIT HARNESS SIDE
CONNECTOR 6 B-7 AND 18 I-10 (METER)
NO
REPLACE THE FUEL TANK UNIT
NO

WIRING SYSTEM 8DÐ463
7-5 Even When The Fuel Tank Is Empty, The Low Fuel Warning Light Does Not Light Up
·DOES THE WARNING LIGHT HAVE A BURNED OUT
BULB, OR IS THE SOCKET POORLY CONNECTED?
·
·DISCONNECT THE ALARM &
RELAY CONTROL UNIT
CONNECTOR B-7
WHEN CONNECT THE
HARNESS SIDE CONNECTOR
6 B-7 WITH THE GROUND,
DOES THE WARNING LIGHT
LIGHT UP?
YES
·IS THE FUEL TANK UNIT NORMAL?REPLACE THE BULB, OR REPAIR A POOR
CONNECTION AT THE SOCKET
NO
REPLACE THE FUEL TANK
UNIT
NOYES
REPLACE THE ALARM &
RELAY CONTROL UNITREPAIR A POOR
CONNECTION AT THE
CONNECTORS OR AN OPEN
CIRCUIT BETWEEN 6 B-6
AND THE METER
NOYES

WIRING SYSTEM 8D Ð 465
Circuit Diagram (RHD)-1
D08RW639
3.0
B/Y
0.85
R/B
0.85
G/R 0.85
R/BC-3 10A
TURN,BACKSTARTER SW
(IG1)
STARTER SW
(ST)
12
C-93
13
C-931
C-93
H-717
H-41 TAIL RELAY
(4)
PCM
(E12)PCM
(E7)PCM
(F2)PCM
(F3)BACK UP
LIGHTSTARTER
RELAY
(5) 1
H-531 0.5
R/B
0.75
R/B
0.5
L/W0.5
L/Y0.5
L/B
0.5
L/W0.5
L/Y0.5
L/B 0.5
L/W0.5
L/Y0.5
L/B0.5
Y/G0.75
R/L1.25
W/L 1.25
W/R
MODE
SW
M-25
5 6
8H-11M-25
A/T SHIFT INDICATOR CONTROL UNIT
2
C-93H-532M-25
6
3
C-93H-533M-25
7
H-534M-25
2
H-117M-25
3
H-1015M-254M-25
1H-1016

WIRING SYSTEM 8D Ð 467
Parts Location (RHD)
Legend
(1) I-10
(2) I-9
(3) C-93
(4) H-7, H-8, H-9, H-24
(5) Mode Switch(6) H-5
(7) H-10, H-11, H-53
(8) E-30
(9) H-41
(10) Relay and Fuse Box
(11) Fuse Box
D08RWA10
5
3
4
67
9
10
11
12
8

8D Ð 468 WIRING SYSTEM
Circuit Diagram (LHD)-1
D08RW949
3.0
B/Y
0.85
R/B
0.85
G/R 0.85
R/BC-3 10A
TURN,BACKSTARTER SW
(IG1)
STARTER SW
(ST)
12
C-93
13
C-9313H-42
1
C-93
H-84
TAIL RELAY
(4)
PCM
(E12)PCM
(E7)PCM
(F2)PCM
(F3)BACK UP
LIGHTSTARTER
RELAY
(6)
H-531 0.85
R/B
0.75
R/B
0.5
L/W0.5
L/Y0.5
L/B
0.5
L/W0.5
L/Y0.5
L/B 0.5
L/W0.5
L/Y0.5
L/B0.5
Y/G0.75
R/L1.25
W/R 1.25
W/L
MODE
SW
M-25
5 6
8H-11M-25
A/T SHIFT INDICATOR CONTROL UNIT
2
C-93H-532M-25
6
3
C-93H-533M-25
7
H-534M-25
2
H-117M-25
3
H-1016M-251M-25
4H-1015

8D Ð 470 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 1112
7
10

WIRING SYSTEM 8D – 471
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.