ISUZU TROOPER 1998 Service Repair Manual

8DÐ268 WIRING SYSTEM
Window On The Front PassengerÕs Side Does Not Operate
STEP ACTION VALUE(S) YES NO
Is BÐ1 grounded securely?
Disconnect the front power window & door lock switchÐLH
connector DÐ14.
Is there continuity between harness side connector DÐ14
terminal 7 and the ground BÐ1?
Repair an open circuit between connector DÐ14 terminal 7
and the ground BÐ1.
Is the action complete?
Turn the starter switch on.
Is the battery voltage applied between harness side
connector DÐ14 terminal 5 and the ground?
Repair an open circuit between connector BÐ37 terminal 4
and connector DÐ14 terminal 5.
Is the action complete?
Connect the battery positive terminal with harness side
connector DÐ14 terminal 10 or 1, and connect the battery
negative terminal with harness side connector DÐ14 terminal
1 or 10.
Does the motor operate?
1. Disconnect the front power window motorÐLH connector
DÐ11.
2. Connect the battery positive terminal with the motor side
connector DÐ11 terminal 1 or 2, and connect the battery
negative terminal with the motor side connector DÐ11
terminal 2 or 1.
Does the motor operate?
Repair an open circuit between the front power window &
door lock switchÐLH and the front power window motorÐLH.
Is the action complete?Ð
Ð
Ð
Approx. 12V
Ð
Ð
Ð
ÐGo to
step 2
Go to
step 4
Go to
step 2
Go to
step 6
Go to
step 4
Replace
the front
power
window &
door lock
switchÐLH
Go to
step 8
Verify
repairGround it
securely
Go to
step 3
Ð
Go to
step 5
Ð
Go to
step 7
Replace
the motor
Ð 1
2
3
4
5
6
7
8

WIRING SYSTEM 8DÐ269
Rear Window On The Left (or Right) Side Does Not Operate
STEP ACTION VALUE(S) YES NO
1. Disconnect the rear power window switchÐLH connector
DÐ22 or the rear power window & door lock switchÐRH
connector DÐ27.
2. Turn the starter switch on.
Is the battery voltage applied between harness side
connector DÐ22 terminal 4 and the ground, or harness side
connector DÐ27 terminal 4 and the ground?
Repair an open circuit between connector BÐ37 terminal 4
and connector DÐ22 terminal 4 or connector DÐ27 terminal 4.
Is the action complete?
Is there continuity between harness side connector DÐ22
terminal 3 and the ground, or harness side connector
DÐ27 terminal 3 and the ground?
Repair an open circuit between connector DÐ22 terminal 3 or
connector DÐ27 terminal 3 and the ground.
Is the action complete?
Connect the battery positive terminal with harness side
connector DÐ22 terminals 5 or harness side connector DÐ27
terminal 5, and connect the battery negative terminal with
harness side connector DÐ22 terminal 6 or harness side
connector DÐ27 terminal 6.
Does the motor operate?
1. Disconnect the rear power window motor connector DÐ20
or DÐ25.
2. Connect the battery positive terminal with motor side
connector DÐ20 or DÐ25 terminal 1 or 2, and connect the
battery negative terminal with the motor side connector
DÐ20 or DÐ25 terminal 2 or 1.
Does the motor operate?
Repair an open circuit between the rear power window
switch and the rear power window motor.
Is the action complete?Approx. 12V
Ð
Ð
Ð
Ð
Ð
ÐGo to
step 3
Go to
step 1
Go to
step 5
Go to
step 3
Replace
the rear
power
window
switchÐLH
or ÐRH
Go to
step 7
Verify
repairGo to
step 2
Ð
Go to
step 4
Ð
Go to
step 6
Replace
the motor
Ð 1
2
3
4
5
6
7

8DÐ270 WIRING SYSTEM
Window on the Front PassengerÕs Side Does Not Operate by the Front Power Window &
Door Lock Switch Ð RH
STEP ACTION VALUE(S) YES NO
Disconnect the front power window & door lock switchÐRH
connector DÐ30 and the front power window & door lock
switchÐRH connector DÐ14.
Is there continuity between harness side connector DÐ30
terminal 5 and harness side connector DÐ14 terminal 2?
Repair an open circuit between connector DÐ30 terminal 5
and connector DÐ14 terminal 2.
Is the action complete?Ð
ÐReplace
the front
power
window &
door lock
switchÐRH
Verify
repairGo to
step 2
Ð 1
2

WIRING SYSTEM 8DÐ271
Lock SW Does Not Function
STEP ACTION VALUE(S) YES NO
Repair or replace the front power window & door lock
switchÐRH.
Is the action complete?Ð Verify
repairÐ 1

8DÐ272 WIRING SYSTEM
General Description
The circuit consists of cruise control unit, cruise
main switch, combination switch, clutch switch
(M/T), mode switch (A/T), brake switch, actuator and
indicator lights.
Cruise control system keeps the vehicle running at a
fixed speed until a signal canceling this fixed speed
is received.
When the cruise main switch is turned on with the
vehicle in the running mode, the battery voltage is
applied to the control unit.
When a signal from the combination switch is input
to the control unit while vehicle is in this state, the
actuator is activated to operate the system. Also,
while the system is operating, the cruise indicator
light in the meter panel lights up.
Set Function
When the cruise main switch turned on and the set
switch is depressed with the vehicle speed within
the set limit and cancel operation is refused, the
vehicle speed when the set switch is released is
stored in the control unit as the set speed. But in
case of the vehicle speed is over maximum limit
speed of cruise control, maximum limit speed in the
control unit is stored as the set speed.
Resume Function
Unless the vehicle speed falls below the minimum
speed limit after canceling the set speed by the
cancel switch, pushing the resume switch causes
the vehicle to resume the speed before cancellation.
Acceleration Function
During cruise control driving, pushing the
acceleration switch (on time is more than 0.6 sec.)
causes an increase in cruise speed and vehicle
accelerates at a controlled rate untill acceleration
switch released.
Vehicle speed at the acceleration switch released
plus 1.0 km/h is stored in the control unit as the set
speed.
Tap up Function
During cruise control driving, pushing the coast
switch (on time is more than 0.6 sec.) causes a
decrease in cruise speed and the vehicle decelerate
at a controlled rate until coast switch released.
Vehicle speed at the coast switch released minus
approx. 1.0 km/h is stored in the control unit as the
set speed.
Tap down Function
During cruise control driving, the set speed can be
lowered approx. 1.0 km/h each time by operating
the coast switch quickly within 0.6 sec.
Cancel Function
During cruise control driving, the cruise control is
released if the control unit receives a signal from the
cancel switch, mode switch, clutch switch or brake
switch. The set speed is still stored.
Down Cancel Function
The cruise control is canceled when the vehicle
speed becomes the set speed minus 20 km/h during
the cruise control working and the set speed is
erased.
Over Drive (OD) Cancel Function
OD cancel function is required when the vehicle
speed becomes the set speed minus 3 km/h during
the cruise control working.
OD cancel function is enabled when the acceleration
function and/or resume function are working except
the vehicle speed is in more than 120 km/h.
Cruise Control

WIRING SYSTEM 8DÐ273
Circuit Diagram (RHD)-1
5
I-6
11
12
H-26
0.5
L/W0.5
L/W0.5
L/W0.5
R/B
0.85
R/B
0.75
R/B
0.5
L/B
0.5
L/B
0.5
L/B
0.5
L/B(A/T)
0.5
L/B 0.5
LG0.5
BR/Y0.5
GR/G
0.5
B
2.0
B 3.0
B/Y
0.85
L/W
0.5
L/W
0.5
P/B0.3
R/G 0.85
L/W0.5
L/W
0.85
G/R
0.5
P/B C-4 15A
ELEC.IGN.C-3 10A
TURN,BACK
CRUISE
MAIN
SWCLUTCH
SW
(M/T)MODE
SW COMBINATION
SW
CRUISE CONTROL UNIT
STARTER SW
(IG1)
BODY-LH 20
H-25
4
I-6
1
B-9
TAIL RELAY
(4)
ILLUMINATION
CONTROLLER(3)
PCM
(F2)
2
I-6
1
B-16 6
I-6
B-529
B-5212
10
B-52
11
B-52
13
B-52
4
B-93
B-910
B-912
B-9
B-1
2
B-16
16
B-9 B-9
M-25H-53H-7
12B-93 3 7H-88M-256H-1117
SET
RESUME
CANCEL
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8DÐ274 WIRING SYSTEM
Circuit Diagram (RHD)-2
0.5
O
0.5
BR/B0.5
BR/R0.5
BR/R
0.5
BR/B 5.0
W
0.85
G/W
0.85
G/Y
0.5
G/Y 0.85
G/YC-14 15A
STOP,
A/T CONT
ACTUATOR BRAKE
SW
INDICATOR
LIGHT
(METER)
CRUISE CONTROL UNIT
BATT.(+)
STOP
LIGHT
2
B-9
3.0
B/Y
0.5
L/YC-10 10A
METER,GAUGE STARTER SW
(IG1)
B-131B-13
B-13H-73B-13
3C-37
7122 4
C-37
4
8B-914H-80.5
BR/W
0.5
BR/W
C-37
1
11H-70.5
BR
0.5
BR
C-37
2
19H-7
7
B-915
B-9
6
B-914
B-914H-26
H-32
0.5
L/Y
0.5
B/O
0.3
B/O0.5
GR/L
0.3
GR/L
0.5
GR/L0.5
LG/W0.5
LG/W
13
B-915H-2618
I-926I-9(W/T.O.D.)
VEHICLE
SPEED SENSOR
(3)
PCM
(F10)
19
I-9
CRUISE
CRUISE
MAIN
16
I-915I-9
17
I-9
5
B-97H-8
9
B-92H-811H-10
CRUISE
CRUISE
MAINH-266
M
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WIRING SYSTEM 8DÐ275
Parts Location (RHD)
Legend
(1) B-52
(2) I-9
(3) I-6
(4) B-1
(5) H-7, H-8
(6) H-32
(7) Cruis Control Unit (B-9)(8) C-37
(9) Mode Switch A/T (M-25)
(10) H-10, H-11, H-53
(11) Fuse Box
(12) H-25, H-26
(13) Relay and Fuse Box
(14) B-13
(15) B-16
1
4
5
6
7
89
10
11
12
13
14
15
23
D08RW941

8DÐ276 WIRING SYSTEM
Circuit Diagram (LHD)-1
5
I-6
11
6
H-48
0.5
L/W0.5
L/W0.5
L/W0.85
R/B
0.85
R/B
0.75
R/B
0.5
L/B
0.5
L/B
0.5
L/B
0.5
L/B(A/T)
0.5
L/B 0.5
LG0.5
BR/Y0.5
GR/G
0.5
B
2.0
B 3.0
B/Y
0.5
L/W
0.5
L/W
0.5
P/B0.3
R/G 0.85
L/W 0.85
L/W
0.85
G/R
0.5
P/B C-4 10A
ELEC.IGN.C-3 10A
TURN,BACK
CRUISE
MAIN
SWCLUTCH
SW
(M/T)MODE
SW COMBINATION
SW
CRUISE CONTROL UNIT
STARTER SW
(IG1)
BODY-RH 5
H-25
4
I-6
1
B-9
TAIL RELAY
(4)
ILLUMINATION
CONTROLLER(3)
PCM
(F2)
2
I-6
1
B-16 6
I-6
B-529
B-5212
10
B-52
11
B-52
13
B-52
4
B-93
B-910
B-912
B-9
B-2
2
B-16
16
B-9 B-9
M-25H-53H-8
12B-92 3 7H-88M-256H-114
SET
RESUME
CANCEL
D08RW957

WIRING SYSTEM 8DÐ277
Circuit Diagram (LHD)-2
0.5
O
0.5
BR/B0.5
BR/R0.5
BR/R
0.5
BR/B 5.0
W
0.85
G/W
0.85
G/Y
0.5
G/Y 0.85
G/YC-14 15A
STOP,
A/T CONT
ACTUATOR BRAKE
SW
INDICATOR
LIGHT
(METER)
CRUISE CONTROL UNIT
BATT.(+)
STOP
LIGHT
2
B-9
3.0
B/Y
0.5
L/YC-10 10A
METER,GAUGE STARTER SW
(IG1)
B-131B-13
B-13H-123B-13
3C-37
106 2 4
C-37
4
8B-97H-120.5
BR/W
0.5
BR/W
C-37
1
3H-120.5
BR
0.5
BR
C-37
2
15H-12
7
B-915
B-9
6
B-914
B-913H-48
H-32
0.5
L/Y
0.3
B/O
0.3
B/O0.3
GR/L
0.3
GR/L
0.5
GR/L0.5
LG/W0.5
LG/W
13
B-912H-48VEHICLE
SPEED SENSOR
(3)
PCM
(F10) 16
I-915I-9
17
I-9
5
B-92H-7
9
B-98H-811H-10
CRUISE
CRUISE
MAINH-2510
M
D08RW958