engine ISUZU TROOPER 1998 Service Repair Manual

8DÐ68 WIRING SYSTEM
Circuit Diagram (RHD 6V
*1) Ð 1
X-17M-25H-10H-12M-25 3.0
W/G
C-1 10A
STARTER RELAYFL-2 50A
KEY SWC-8 15A
ENGINE
MODE SW
(A/T)(M/T)
AC GENERATOR
STARTER
RELAY
STARTER SW
(ST)FL-1
PCM(C12)STARTER SW
(IG1)
STARTER SW(B2)
SHIFT LOCK
CONTROLLER(5)CHARGE
WARNING
LIGHT
(METER) FL-1
0.5
W/R
0.5
W/L
1.25
W/L
1.25
W/R
0.5
W/R0.5
W/R3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y0.85
Y 0.5
W/R
0.85
W/G 0.85
W/G 0.85
W/G0.85
W/G0.75
W/G5.0
W 5.0
W
0.75
B/Y5.0
W 5.0
W
5.0
W
5.0
W 0.85
B/Y 0.85
B/Y3.0
B/Y
0.5
W/L
0.5
L2
15
1
4
32
10 11 423 3
2
1
1
10 1321 19 2
6
5 4
16
H-10H-42X-17
H-1X-17
H-13X-17
H-15P-8H-3
P-9
5.0
W
1
H-14
P-8H-3
X-17
H-16
H-3
H-2
H-2
H-15
H-14
P-8
A
B
C
D
X-17
IG
LB C
D08RW585

8DÐ72 WIRING SYSTEM
Circuit Diagram (RHD 4JG2) Ð 2
3.0
B/Y STARTER SW
(IG1)
C-19 25A
BLOWER C-8 15A
ENGINEB-19
BODY-RH
FENDER-RH 0.85
W/G
0.3
B
1.25
B 0.85
W/G 0.5
B
0.85
W/G0.85
W/G0.85
W/G
HEATER & A/C
RELAY AC
GENERATOR
B-36B-36
BLOWER
MOTOR
1
34
3.0
L/R
3.0
LC-20 10A
AIR CON
A/C THERMO
RELAY(2)0.5
BR B-36101 23
4
H-13
1
C-39
1
H-142
B-36
CHARGE
RELAY
X-17X-17
X-1719
H-15
X-17 X-17
1 32
P-82H-3
1
H-3
2
H-2
3
5
H-3
12
H-42
13
H-15
10
H-16
QOS III CONTROL
UNIT(6)
or
QOS/EGR
CONTROL UNIT(18)A/T SHIFT
CONTROLLER
(5)CHARGE
WARNING
LIGHT
(METER)
C
B
C
P-8
IG S
LB P-8
1
H-2 5.0
W
5.0
W 2.0
W/B
3.0
W/B
0.85
B/Y
0.85
B/Y0.85
B/Y
0.85
W/G
0.85
W/L 0.85
B/Y5.0
W
5.0
W
5.0
W
5.0
W
3.0
W 0.5
B
0.5
BA
P-9
D08RW633

8DÐ74 WIRING SYSTEM
Circuit Diagram (LHD 6V
*1)Ð1
X-17M-25H-10H-8M-25 3.0
W/G
C-1 10A
STARTER RELAYFL-2 50A
KEY SWC-8 15A
ENGINE
MODE SW
(A/T)(M/T)
AC GENERATOR
STARTER
RELAY
STARTER SW
(ST)FL-1
PCM(C12)STARTER SW
(IG1)
STARTER SW(B2)
SHIFT LOCK
CONTROLLER(5)CHARGE
WARNING
LIGHT
(METER) FL-1
0.5
W/R
0.5
W/L
1.25
W/L
1.25
W/R
0.5
W/R0.5
W/R3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y 0.5
W/R
0.85
W/G 0.85
W/G0.85
W/G0.75
W/G5.0
W 5.0
W
0.75
B/Y5.0
W 5.0
W
5.0
W
5.0
W 0.85
B/Y 0.85
B/Y3.0
B/Y
0.5
W/L
0.5
L1
15
1
4
3
1 423 3
2
1
1
5 1121 32
6
5 4
16
H-10H-42X-17
H-1X-17
H-15P-8H-3
P-9
5.0
W
1
H-14
P-8H-3
H-16
H-3
H-2
H-2
H-13
H-14
P-8
A
B
C
X-17
IG
LB C
D08RW894

8DÐ78 WIRING SYSTEM
Circuit Diagram (LHD 4JG2)Ð2
X-17
5
4
P-8
1H-32
H-21
H-22
H-133
X-17
3
H-32
C-39
3
P-8
IG
3
P-8
S
P-9
B
3
X-17
2
X-17
E
E
HEATER & A/C
RELAY
B-36
BLOWER
MOTORA/C THERMO
RELAY(2)
B-36
1.25
B 0.3
B
1
3 B-36
FENDER-RH
B-19
BODY-LH
3.0
B/Y
0.85
B/Y
0.85
B/Y
0.85
W/G 0.5
B
0.5
B0.5
B
CHARGE
RELAYA/C
GENERATOR
0.85
W/G 0.85
B/Y0.85
B/Y2.0
W/B
3.0
W/B
0.85
W/G
0.85
W/L5.0
W
5.0
W5.0
W
5.0
W
5.0
W
3.0
W
3.0
L/R
3.0
L0.5
BR 5.0
W STARTER SW
(IG1)
C-8 15A
ENGINE
3.0
L/B
0.5
O/G
0.5
O/G STARTER SW
(IG1)
C-11 10A
AUDIO(ACC)
C-19 25A
BLOWERC-20 10A
AIR CON
1
H-3
X-17
CHARGE
WARNING
LIGHT
(METER)QOS III
CONTROL UNIT(6)
OR
QOS/EGR
CONTROL UNIT(18) 1
B
A
2
4 B-361
H-14
D08RW898

8DÐ80 WIRING SYSTEM
Powertrain Control Module (PCM)
General Description
The Powertrain Control Module (PCM) is located in
the passenger compartment.
The PCM constantly monitors the information from
various sensors, and controls the systems that affect
vehicle performance.
The PCM performs the diagnostic function of the
system. It can recognize operational problems, alert
the driver through the Malfunction Indicator Light
(MIL) and store a Diagnostic Trouble Code (DTC) or
DTC(s) which identify the problem areas to aid the
technician in making repairs.
The PCM is designed to process the various input
informations and then sends the necessary
electrical responses to control fuel delivery, spark
timing and other emission control systems. The
input information has an interrelation to more than
one output, therefore, if the one input failed, it could
affect more than one system operation.
Refer to Driveability and Emission in Engine section
and Automatic Transmission in Transmission
section.

WIRING SYSTEM 8DÐ81
Circuit Diagram (RHD 6V
*1)Ð1
PCM : POWERTRAIN CONTROL MODULE 1.25
W 1.25
W 2.0
W BATT.(+)
2.0
W
0.5
R/L
C-18
H-41
C-21E-26
2
8H-4B
A0.85
B/Y
C
B
E-26
FUEL
INJECTOR
FL-3 30A
PCM
NO.10.5
R/L
C-21E-11
2
7H-4E-11NO.20.5
R/L
C-31E-25
2
6H-4E-25NO.30.5
R/L
C-21E-12
2
5H-4E-12NO.40.5
R/L
C-31E-24
2
12H-4E-24NO.50.5
R/L
0.5
G/O 0.5
G/W0.5
G0.5
G/R0.5
G/B0.5
G/Y
0.85
G/O 0.85
G/W0.85
G0.85
G/R0.85
G/B0.85
G/Y1.25
R/L1.25
R/L1.25
R/L 1.25
R/L 1.25
R/L2.0
W
C-21E-13
2
11H-4
H-416
10X-122H-424X-12
E-13NO.6
C-3
C-3
P C M
D3 D1 F13 C1 F15 C3 E16 F16 A4
PCM MAIN
RELAY
0.5
B
FENDER-RH3.0
B/Y STARTER SW
(IG1)
0.85
B/Y
0.85
B/YX-121 19H-15
3X-12
C-8 15A
ENGINE
C-397
D08RW587

WIRING SYSTEM 8DÐ87
Circuit Diagram (RHD 6V
*1)Ð7
C-2E-61
C-22
C-23
C-2
E-64
E-6
E-6
PCM : POWERTRAIN CONTROL MODULE
P C M
0.85
R/Y0.85
GR
JOINT
CONNECTOR0.5
L/R B1 D9 F8
0.85
R/Y
0.8
G/W
C-2
H-6
H-6 0.85
GR0.85
GR/B
0.8
G0.8
R
H-6
C-1
C-2
C-3
C-2
E-7
E-7
E-7 234
312
MAP SENSOR
C-3E9
C-2
H-5 0.5
GR
0.8
G0.8
L/R
H-5
C-2
E-20
E-20 15 16
21
C-1A5
C-2H-44
ENGINE
COOLANT
TEMPERATURE
SENSORIDLE AIR
CONTROL VALVEVEHICLE
SPEED
SENSOR
(METER)
0.85
L
0.8
L
C-1A6
C-2H-43 0.85
L/W
0.8
L/W
C-1A8
C-2H-42
AB0.85
L/R
0.8
L/R
C-1A7
C-2D7
C-2
H-41 0.85
L/B
0.8
L/B
0.85
B/P 0.85
B/P0.5
LG/W
0.5
LG/W 20 15 12
18 14 13 17
C-88
5
I-10I-10
21
FENDER-RH(W/TOD)
5
I-10
5C-3918H-1612H-9I-919
D08RW907

8DÐ96 WIRING SYSTEM
Circuit Diagram (LHD 6V
*1)Ð1
PCM : POWERTRAIN CONTROL MODULE 1.25
W 1.25
W 2.0
W BATT.(+)
2.0
W
0.5
R/L
C-18
H-41
C-21E-26
2
8H-4B
A0.85
B/Y
C
B
E-26
FUEL
INJECTOR
FL-3 30A
PCM
NO.10.5
R/L
C-21E-11
2
7H-4E-11NO.20.5
R/L
C-31E-25
2
6H-4E-25NO.30.5
R/L
C-21E-12
2
5H-4E-12NO.40.5
R/L
C-31E-24
2
12H-4E-24NO.50.5
R/L
0.5
G/O 0.5
G/W0.5
G0.5
G/R0.5
G/B0.5
G/Y
0.85
G/O 0.85
G/W0.85
G0.85
G/R0.85
G/B0.85
G/Y1.25
R/L1.25
R/L1.25
R/L 1.25
R/L 1.25
R/L2.0
W
C-21E-13
2
11H-4
H-416
10X-122H-424X-12
E-13NO.6
C-3
C-3
P C M
D3 D1 F13 C1 F15 C3 E16 F16 A4
PCM MAIN
RELAY
0.5
B
FENDER-RH3.0
B/Y STARTER SW
(IG1)
0.85
B/Y
0.85
B/YX-121 3H-13
3X-12
C-8 15A
ENGINE
C-397
D08RW901

8DÐ102 WIRING SYSTEM
Circuit Diagram (LHD 6V
*1)Ð7
C-2E-61
C-22
C-23
C-2
E-64
E-6
E-6
PCM : POWERTRAIN CONTROL MODULE
P C M
0.85
R/Y0.85
GR
JOINT
CONNECTOR0.5
L/R B1 D9 F8
0.85
R/Y
0.8
G/W
C-2
H-6
H-6 0.85
GR0.85
GR/B
0.8
G0.8
R
H-6
C-1
C-2
C-3
C-2
E-7
E-7
E-7 234
312
MAP SENSOR
C-3E9
C-2
H-5 0.5
GR
0.8
G0.8
L/R
H-5
C-2
E-20
E-20 15 16
21
C-1A5
C-2H-44
ENGINE
COOLANT
TEMPERATURE
SENSORIDLE AIR
CONTROL VALVEVEHICLE
SPEED
SENSOR
(METER)
0.85
L
0.8
L
C-1A6
C-2H-43 0.85
L/W
0.8
L/W
C-1A8
C-2H-42
AB0.85
L/R
0.8
L/R
C-1A7
C-2D7
C-2
H-41 0.85
L/B
0.8
L/B
0.85
B/P 0.85
B/P0.5
LG/W
0.5
LG/W 20 15 12
18 14 13 17
C-88
FENDER-RH
5
I-10
3C-391H-1614H-9I-919
D08RW906

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.