cruise control ISUZU TROOPER 1998 Service Owner's Manual

WIRING SYSTEM 8DÐ1
BODY AND ACCESSORIES
WIRING SYSTEM
CONTENTS
Service Precautions . . . . . . . . . . . . . . . . . . . 8DÐ3
General Description . . . . . . . . . . . . . . . . . . . 8DÐ4Notes for Working on Electrical Items . . 8DÐ4
Symbols and Abbreviations . . . . . . . . . . . 8DÐ10
Parts for Electrical Circuit . . . . . . . . . . . . . 8DÐ12
Reading the Circuit Diagram . . . . . . . . . . 8DÐ21
Main Data and Specifications . . . . . . . . . . . 8DÐ24 Fuse, Fusible Link and Circuit Breaker Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ24
Relay Location . . . . . . . . . . . . . . . . . . . . . . 8DÐ27
Diode Location . . . . . . . . . . . . . . . . . . . . . . 8DÐ30
Grounding Point . . . . . . . . . . . . . . . . . . . . . 8DÐ33
Cable Harness Routing . . . . . . . . . . . . . . . 8DÐ45
Fuse Block Circuit . . . . . . . . . . . . . . . . . . . . . 8DÐ53 Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ54
Start and Charging . . . . . . . . . . . . . . . . . . . . 8DÐ67 General Description . . . . . . . . . . . . . . . . . . 8DÐ67
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ68
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ70
Powertrain Control Module (PCM) . . . . . . . 8DÐ80 General Description . . . . . . . . . . . . . . . . . . 8DÐ80
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ81
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ93
QOSIII (4JG2) . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ111 General Description . . . . . . . . . . . . . . . . . . 8DÐ111
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ112
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ114
QOS and EGR System (4JG2) . . . . . . . . . . . 8DÐ118 General Description . . . . . . . . . . . . . . . . . . 8DÐ118
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ119
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ122
Headlight and Fog Light . . . . . . . . . . . . . . . . 8DÐ127 General Description . . . . . . . . . . . . . . . . . . 8DÐ127
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ128
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ130
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ134
Rear Foglight . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ150 Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ151
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ152
Headlight Leveling . . . . . . . . . . . . . . . . . . . . 8DÐ153 General Description . . . . . . . . . . . . . . . . . . 8DÐ153
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ154
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ155
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ156
Clearance Light, Taillight and License Plate Light . . . . . . . . . . . . . . . . . . . . 8DÐ159 General Description . . . . . . . . . . . . . . . . . . 8DÐ159
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ160
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ163
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ168
Interior Illumination Light . . . . . . . . . . . . . . 8DÐ180 General Description . . . . . . . . . . . . . . . . . . 8DÐ180
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ181
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ185
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ192
Turn Signal Light and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ193
General Description . . . . . . . . . . . . . . . . . . 8DÐ193
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ194
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ197
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ202
Stoplight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ208 General Description . . . . . . . . . . . . . . . . . . 8DÐ208
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ209
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ212
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ216
Backup Light. . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ220 General Description . . . . . . . . . . . . . . . . . . 8DÐ220
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ221
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ223
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ227
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ230 General Description . . . . . . . . . . . . . . . . . . 8DÐ230
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ231
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ232
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ235
Dome Light, Luggage Room Light, Courtesy Light and Map Light . . . . . . . . . . 8DÐ237
General Description . . . . . . . . . . . . . . . . . . 8DÐ237
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ238
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ240
Power Door Lock . . . . . . . . . . . . . . . . . . . . . . 8DÐ244 General Description . . . . . . . . . . . . . . . . . . 8DÐ244
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ245
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ250
Diagnosi s. . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ2 56
Power Window . . . . . . . . . . . . . . . . . . . . . . . 8DÐ261 General Description . . . . . . . . . . . . . . . . . . 8DÐ261
Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . 8DÐ262
Parts Location . . . . . . . . . . . . . . . . . . . . . . . 8DÐ263
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ266
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . 8DÐ272

WIRING SYSTEM 8DÐ33
Grounding Point
Reference Table
(6VD1 RHD)
Connector No. Cable harness Location Parts (Load)
B-1
Door mirror defogger (LH), Fan SW, FRT power
window & door lock SW-LH, Cruise control
unit, FRT door key SW-LH, FRT door lock
actuator-LH, FRT door lock SW-LH
B-2Sun roof SW, Sun roof control unit,
Safety SW, Limit SW
Body-LH
B-18
FRT door key SW-RH, FRT door lock & power
window SW-RH, FRT door lock actuator & lock
SW-RH, FRT door lock SW-RH, Door mirror
defogger (RH), RR wiper intermittent relay,
Mode SW (A/T), Starter relay
B-19
B-26RR Power window SW-RH, Mirror control SW,
Mirror defogger SW, Mirror folding SW,
Car telephone, Shift lock controller, POWER &
WINTER SW, Seat heater, Seat heater SW,
RR door lock actuator-LH, EBCM Body-RH
Body harness
Body-center
C-16
Pump & VSV, Headlight wiper timer2
C-16
4WD SW, VSV;FRT axle, FRT axle SW3
C-16
FRT fog light 4
C-16P/S pressure SW, Headlight leveling actuator-LH7
C-16
Side turn signal light (LH)
8Fender-LH Engine room
harness
Cigar lighter, Dimmer·passing SW, Illumination
controller, RR defogger SW, Flasher unit,
Power window relay, Cruise main indicator
light, Lighting SW, Glove box illumination light,
Ashtray illumination light, Headlight wiper SW,
Clock, FRT fog light SW, Variable intermittent
(FRT wiper & washer SW), Kick down SW,
Anti-theft controller, Turn signal indicator light,
Heater & A/C relay
C-16
5
Headlight wiper motor
C-16Clearance light, FRT turn signal light1
C-16O2 Sensor, Headlight leveling actuator-RH
6B-28
RR power window SW-RH, Power & winter SW,
Power seat SW, Tilt motor & SW, Recliner
motor & SW, RR door lock actuator-RH, EBCM

WIRING SYSTEM 8DÐ35
(6VD1 LHD)
Connector No. Cable harness Location Parts (Load)
B-1
FRT power window & door lock SW-RH, FRT
door key SW-RH, FRT door lock actuator-RH,
Door lock SW-RH, Door mirror defogger (RH),
Key & light remind buzzer (Saudi Arabia),
Sun roof SW, Sun roof control unit, Safety SW,
Limit SW
B-2Seat belt warning light (Saudi Arabia), Cruise
control unit, Fan SW, Turn signal indicator
light, Clock, Glove box illumination light,
Ashtray illumination light, RR defogger SW,
Cigar lighter
Body-RH
B-18
FRT door key SW-LH, FRT door lock actuator &
lock SW-LH, Door lock SW-LH, FRT door lock &
power window SW-LH, Door mirror defogger
(LH), RR wiper intermittent relay, Starter relay,
Mode SW (A/T), Power window relay
B-19
B-26Mirror control SW, Mirror folding SW, Mirror
defogger SW, RR Door lock actuator-RH, Car
telephone, Shift lock controller, POWER &
WINTER SW, Seat heater, Seat heater SW,
EBCM, RR power window SW-RH Body-LH Body harness
Body-center
C-164WD SW, VSV;FRT axle, FRT axle SW3
C-16
FRT fog light 4
C-16
O2 Sensor7
C-16
Side turn signal light (LH)
8Fender-LH Engine room
harnessDimmer·passing SW, Illumination controller,
RR defogger SW, Flasher unit, Cruise main
indicator light, Lighting SW, Headlight wiper
SW, Clock, FRT fog light SW, Variable
intermittent (FRT wiper & washer SW),
Anti-theft controller, Heater & A/C relay, Kick
down SW
C-16
5
Headlight wiper motor
C-16Clearance light, FRT turn signal light1
B-28EBCM, Seat belt SW (Saudi Arabia), Tilt motor
& SW, Recliner motor & SW, Power seat SW
P/S pressure SW
C-166

WIRING SYSTEM 8DÐ89
Circuit Diagram (RHD 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-7
6M-25
3 0.85
R/B
0.75
R/B
0.75
R/L
BACKUP
LIGHT 0.5
R/B
17M-258H-117
3.0
W/GSTARTER SW
(ST)
H-10H-12
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-87
MODE SW
1 152
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
D08RW595

8DÐ90 WIRING SYSTEM
Circuit Diagram (RHD 6V
*1)Ð10
C-1
C-1
C-1
C-1
H-9I-9
H-9
H-9
H-24
I-9
A11 A10 A14 A9F4
PCM:POWERTRAIN CONTROL MODULE
I-9H-26
I-9
I-9
I-9
P C M
0.5
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
5 16 4 21
I-9
29 26
I-9
28
I-9
6
I-9
B-14H-12B-14C-3 3
8 2 1
4 1
3 21 25 156 C-10 10A
METER,GAUGE STARTER SW
(IG1)
METER
POWER
WINTER
CHECK
TRANS
A/T OIL
TEMP
POWER
WINTER
CHECK
TRANS
A/T OIL
TEMP
(W/TOD)
B-13B-13G
(W/CRUISE CONTROL)
STOP
LIGHT
SWBRAKE
SWC-14 15A
STOP,A/T CONT BATT. (+)
D08RW596

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 8DÐ183
Circuit Diagram (RHD)-3
DE
F
G 0.3
R/G 0.85
G/R
0.3
R/G 0.85
G/R
0.3
R/G
METER RR WIPER/
WASHER
SW HEATER
BEZEL7
8
I-9
I-9
3
2
I-16
I-16
0.85
G/R
0.3
R/G 0.85
G/R
0.3
R/G
3
5
I-23
I-23
CRUISE
CONTROL
MAIN
SW6
2
I-6
I-6
24
25
I-9 (W/TOD)
I-9
D08RW655

WIRING SYSTEM 8DÐ189
Circuit Diagram (LHD)-4
DE
F
0.85
G/R
0.3
R/G 0.85
G/R
0.3
R/G
4WD
SW RR WIPER/
WASHER
SW HEATER
BEZEL2
3
I-12
I-12
G 0.3
R/G 0.85
G/R
0.3
R/G
METER7
8
I-9
I-9
3
2
I-16
I-16
0.85
G/R
0.3
R/G 0.85
G/R
0.3
R/G
3
5
I-23
I-23
CRUISE
CONTROL
MAIN
SW6
2
I-6
I-6
D08RW891

8DÐ208 WIRING SYSTEM
Stoplight
General Description
The circuit consists of the stoplight, stoplight switch
(vehicles w/o cruise control), brake switch (vehicles
w/ cruise control).
With the brake pedal depressed, the stoplight switch
or the brake switch is turned on to illuminate the
stoplight. The brake switch controls not only the
operation of the stoplight but also the input of the
cruise cancel signals to the cruise control unit.