light ISUZU TROOPER 1998 Service Repair Manual

8DÐ104 WIRING SYSTEM
Circuit Diagram (LHD 6V
*1)Ð9
3.0
B/Y
C-3 10A
TURN, BACKC-1 10A
STARTER RELAYSTARTER SW
(IG1)
EHCU : ELECTRONIC HYDRAULIC CONTROL UNIT
PCM : POWERTRAIN CONTROL MODULE
P C M
H-11H-8
6M-25
3 0.85
R/B
0.75
R/B
0.75
R/L
BACKUP
LIGHT 0.5
R/B
4M-258H-117
3.0
W/GSTARTER SW
(ST)
H-10H-8
0.5
W/L
1.25
W/L
STARTER
RELAY (6)0.5
W/RM-25
M-25
5C-3
E12 0.5
L/W
0.5
L/WH-531
M-25
6C-3
E7 0.5
L/Y
0.5
L/YH-532
M-25
7C-3
F2 0.5
L/B
0.5
L/BH-533
M-25
2C-3
F3 0.5
Y/G
0.5
Y/GH-534
8
H-72
MODE SW
1 151
C-1EHCU (6)
0.5
GR
A12
C-3
CRUISE CONTROL
UNIT (5)
0.5
GR/L
F10
M-25
1.25
W/RH-104
16H-42
D08RW909

WIRING SYSTEM 8DÐ105
Circuit Diagram (LHD 6V
*1)Ð10
C-1
C-1
C-1
C-1
H-24I-9
H-24
H-24
H-24
A11 A10 A14 A9 F4
PCM:POWERTRAIN CONTROL MODULE
I-9H-25
I-9
I-9
I-9P C M0.5
O/L0.85
G/Y 0.85
G/Y0.85
G/W 0.85
G/W5.0
W
0.85
G/Y
0.5
O/B 0.5
P/G 0.5
GR/W0.5
O/L 0.5
O/B 0.5
P/G 0.5
L/Y0.5
L/Y3.0
B/Y
0.5
P/W
11 3 2 91
B-14H-7B-14C-3122 1
4 1
3 21 25 15 10C-10 10A
METER,GAUGE STARTER SW
(IG1)
METER
POWER
WINTER
CHECK
TRANS
A/T OIL
TEMP
B-13B-13G
(W/CRUISE CONTROL)
STOP
LIGHT
SWBRAKE
SWC-14 15A
STOP,A/T CONT BATT. (+)
D08RW910

WIRING SYSTEM 8DÐ111
QOS-III (4JG2)
General Description
The circuit consists of the starter switch, QOS-III
control unit, glow relay, charge relay, fuel cut
solenoid, dropping resistor, thermo sensor, glow
indicator light (meter), glow plug and car speed
sensor. The engine coolant temperature at the time
of the engine start-up is sensed by the thermo
sensor to change the glow time so that the optimum
starting conditions can always be obtained.
The idling speed just after the engine start-up can
also be placed in the most suitable conditions in
accordance with the coolant temperature by the
operation of the delay timer.The indicator timer is activated upon the starter
switch turned to the ON position, and the indicator
light comes on for as much time as suitable for the
engine coolant temperature at the time of the
engine start-up.

8DÐ112 WIRING SYSTEM
Circuit Diagram (RHD)-1
0.5
B
0.85
W/G 0.85
W/G0.5
B0.5
B/Y
0.85
B/Y0.5
L/Y
0.5
L/Y
0.5
P/W0.85
B/O 0.85
B/O 0.85
B/O
0.3
P/W 0.85
B/Y 0.85
B/Y3.0
B/Y
C-8 15A
ENGINE
CHARGE
RELAY
GLOW
INDICATOR
LIGHT
(METER)
FUEL CUT
SOLENOID
0.85
W/L
QOS III CONTROL UNIT
C-666
C-661
C-6613
C-6611
C-669
C-391
X-172
I-915
H-4112
H-914
X-173
X-175H-33
1
X-17
26
I-9 4
X-17
FENDER-RHSTARTER SW
(IG1)AC GENERATOR
(L)
C-10 10A
METER, GAUGEC-9 15A
FUEL CUT
A 19
H-153.0
W/G
0.5
W/R
0.5
W/RC-1 10A
STARTER
RELAY STARTER SW
(ST)
4
H-7
0.5
LG/W
0.3
LG/W VEHICLE SPEED
SENSOR(3)
15
H-5 12
H-76
H-26
H-577E-371H-7
D08RW982

WIRING SYSTEM 8DÐ115
0.5
B
0.85
W/G 0.85
W/G0.5
B0.5
B/Y
0.85
B/Y0.5
L/Y
0.5
L/Y
0.5
P/W0.85
B/O 0.85
B/O 0.85
B/O
0.3
P/W 0.85
B/Y 0.85
B/Y3.0
B/Y
C-8 15A
ENGINE
CHARGE
RELAY
GLOW
INDICATOR
LIGHT
(METER)
FUEL CUT
SOLENOID
0.85
W/L
QOS III CONTROL UNIT
C-666
C-661
C-6613
C-6611
C-669
C-392
X-172
I-915
H-4112
H-241
X-173
X-175H-33
1
X-17
26
I-9 4
X-17
FENDER-RHSTARTER SW
(IG1)AC GENERATOR
(L)
C-10 10A
METER, GAUGEC-9 15A
FUEL CUT
A 3
H-133.0
W/G
0.5
W/R
0.5
W/RC-1 10A
STARTER
RELAY STARTER SW
(ST)
6
H-8
0.5
LG/W
0.3
LG/W VEHICLE SPEED
SENSOR(3)
15
H-5 13
H-810
H-25
H-577E-371H-7
D08RW983
Circuit Diagram (LHD)-1

8DÐ118 WIRING SYSTEM
QOS and EGR System (4JG2)
General Description
The circuit consists of the starter switch, QOS/EGR
control unit, glow relay, charge relay, fuel cut
solenoid, dropping resistor, thermo sensor, glow
indicator light (meter), glow plug, vehicle speed
sensor, tacho sensor, throttle position sensor, EVRV
and VSV; EGR.
The engine coolant temperature at the time of the
engine start-up is sensed by the thermo sensor to
change the glow time so that the optimum starting
conditions can always be obtained.
The idling speed just after the engine start-up can
also be placed in the most suitable conditions in
accordance with the coolant temperature by the
operation of the delay timer.The indicator timer is activated upon the starter
switch turned to the ON position, and the indicator
light comes on for as much time as suitable for the
engine coolant temperature at the time of the
engine start-up.
EGR system controls the information of NOx by
returning a small amount of exhaust gas from the
intake manifold to the combustion chamber
through the EGR valve.

WIRING SYSTEM 8DÐ119
Circuit Diagram (RHD)-1
0.5
B
0.5
W/G 0.85
W/G0.5
B0.5
B/Y
0.5
B/Y 0.85
B/Y0.5
L/Y
0.5
L/Y
0.5
P/W0.85
B/O 0.85
B/O 0.85
B/O
0.3
P/W 0.85
B/Y 0.85
B/Y 0.85
B/Y3.0
B/Y
C-8 15A
ENGINE
CHARGE
RELAY
GLOW
INDICATOR
LIGHT
(METER)
FUEL CUT
SOLENOID
AMBIENT
THERMO
SW QWS
THERMO SW
(ENGINE)
0.85
W/L
QOS/EGR CONTROL UNIT
C-6618
C-669
C-665
C-6617
C-6620
C-6616
C-391
X-172
I-915
H-4112
H-914
X-173
X-175H-33
1
X-17
26
I-9 4
X-17
FENDER-RHSTARTER SW
(IG1)AC GENERATOR
(L)
C-10 10A
METER, GAUGEC-9 15A
FUEL CUT
A 19
H-153.0
W/G
0.5
W/R0.5
BR
0.5
BR
0.5
BR
0.5
LG/Y
0.5
G/B
0.5
G/W 0.5
W/RC-1 10A
STARTER
RELAY STARTER SW
(ST)
4
H-71
E-40
11H-4
2C-743.0
L/R
0.5
BR
0.5
BR
0.5
BRC-20 10A
AIR CON HEATER & A/C
RELAY(4)
16
H-26
0.5
LG/W
0.3
LG/W VEHICLE SPEED
SENSOR(3)
15
H-5 12
H-76
H-26
H-57
H-412H-47E-402 7
E-371H-7
B
C
CH-167
C-74
1
D08RW695

WIRING SYSTEM 8DÐ123
0.5
B
0.5
W/G 0.85
W/G0.5
B0.5
B/Y
0.5
B/Y 0.85
B/Y0.5
L/Y
0.5
L/Y
0.5
P/W0.85
B/O 0.85
B/O 0.85
B/O
0.3
P/W 0.85
B/Y 0.85
B/Y 0.85
B/Y3.0
B/Y
C-8 15A
ENGINE
CHARGE
RELAY
GLOW
INDICATOR
LIGHT
(METER)
FUEL CUT
SOLENOID
AMBIENT
THERMO
SW QWS
THERMO SW
(ENGINE)
0.85
W/L
QOS/EGR CONTROL UNIT
C-6618
C-669
C-665
C-6617
C-6620
C-6616
C-392
X-172
I-915
H-4112
H-241
X-173
X-175H-33
1
X-17
26
I-9 4
X-17
FENDER-RHSTARTER SW
(IG1)AC GENERATOR
(L)
C-10 10A
METER, GAUGEC-9 15A
FUEL CUT
A 3
H-133.0
W/G
0.5
W/R0.5
BR
0.5
BR
0.5
BR
0.5
LG/Y
0.5
G/B
0.5
G/W 0.5
W/RC-1 10A
STARTER
RELAY STARTER SW
(ST)
6
H-81
E-40
11H-4
2C-743.0
L/R
0.5
BR
0.5
BR
0.5
BRC-20 10A
AIR CON HEATER & A/C
RELAY(4)
14
H-26
0.5
LG/W
0.3
LG/W VEHICLE SPEED
SENSOR(3)
15
H-5 13
H-810
H-25
H-57
H-412H-47E-402 7
E-371H-8
B
C
CH-1617
C-74
1
D08RW984
Circuit Diagram (LHD)-1

WIRING SYSTEM 8DÐ127
Headlight and Fog Light
General Description
The circuit consists of the headlight, FRT fog light,
lighting SW, dimmerápassing SW, FRT fog light SW,
high beam indicator, tail relay, lighting relay, FRT
fog light relay and dimmer relay (LHD).
When the lighting SW is turned on by setting it at
headlight position, the lighting relay is activated to
turn on the headlight. The optical axis of the
headlight can be turned up or down by operating the
dimmer SW while the headlight is on.
The passing SW is independent of the lighting SW,
and the optical axis of the passing light can beturned up only while the switch lever is pulled up
and held in this state.
FRT fog lights turn on when the lighting SW is at
clearance light or headlight position.

8DÐ128 WIRING SYSTEM
Circuit Diagram (RHD)-1
5.0
W
0.85
GR0.85
GR3.0
W3.0
W
3.0
Y/RFL-1 80A
MAIN
F-8 20A
FRT FOG
FOG LIGHT
RELAYFOG
LIGHT
SWLIGHTING
RELAY
F-4 15A
H/LAMP-LHF-5 15A
H/LAMP-RH BATT.(+)
TAIL
RELAY(4)
ILLUMINATION
CONTROLLER
(3)
1.25
V4
15
X-23A2X-23
0.85
R/L
B 0.5
B0.5
B
1.25
B
0.5
B 0.85
G 0.85
G
0.5
B0.3
R/G
3
7
X-235I-5
3
I-5
2
I-5
H-41
C-39
FENDER
-RH13
H-16 1
X-231H-16
5
H-26 4
I-56
I-5
0.85
R/L 0.85
R/L0.85
LG/R
0.3
V/R0.3
V/R0.5
V/R
0.3
V/R 3.0
R/B3
4
X-1
5
X-1
C
D
H-41
E4
H-15 1
X-14
X-1F
B-19
BODY
-RH
D08RW608