sensor ISUZU TROOPER 1998 Service Repair Manual

WIRING SYSTEM 8DÐ125
12
E-41
E-41
QOS THERMO SENSOR
(ENGINE)
TACHO
SENSOR
(INJECTION
PUMP)QOS/EGR CONTROL UNIT
C-16 0.5
B
0.5
B/P0.5
B/P0.5
B/P0.5
B/P0.5
B/R0.5
B/R0.5
R/G
0.5
R/G0.5
R/W
0.5
R/W0.5
Y/G0.5
Y
0.5
Y/L0.5
Y0.5
B/Y
0.5
B
8C-66
3FENDER
-LH
C-397 4FENDER
-RHH-411
E-36
10H-4
C-66
14
C-66
15E-36
2H-46
C-66
2
C-66
1
C-66
12
C-66
11
C-66
13
2
THROTTLE POSITION
SENSOR
(INJECTION PUMP)
H-49
1
H-41
3
H-4
E-5
E-5
E-55
H-48
H-412
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Circuit Diagram (LHD)-3

WIRING SYSTEM 8DÐ153
Headlight Leveling
General Description
The circuit consists of the headlight leveling SW and
headlight leveling actuators. The actuator is made
up of a motor, two relays and disk-type sensor. The
sensor rotates in accordance with the rotation of the
motor and stops the rotation of the motor at each
position corresponding to the levels 0 to 3.

8DÐ158 WIRING SYSTEM
3. Actuator On The Left (Or Right) Side Does Not Stop
YES
REPAIR OR REPLACE THE ACTUATOR
(FAILURE OF THE SENSOR OR A SHORT
CIRCUIT IN THE ACTUATOR)
NO
·IS THERE CONTINUITY BETWEEN MOTOR
CONNECTOR TERMINALS 4 C-77 AND 6 C-77
(OR 4 C-76 AND 6 C-76 )?
REPAIR OR REPLACE THE ACTUATOR (FAILURE
OF THE RELAY IN THE ACTUATOR)

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 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
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WIRING SYSTEM 8DÐ279
Diagnosis
The cruise control unit uses the cruise main indicator light and diagnoses the failure, when the control unit
detects abnormality on the table below.
PART POSIBLE CAUSE DETECTION PERIOD DTC
Motor system short circuit Energizing motor 1Ð1
Clutch system short circuit Energizing clutch 1Ð2
Actuator Clutch system open circuit Energizing clutch 1Ð2
Mechanical defect Cruise controlling 1Ð3
Close side of motor system open circuit Cruise controlling 1Ð1
CruiseOpen side of motor system continuously energizing While starter sw on 1Ð4
control unit
Clutch output abnormality While starter sw on 1Ð4
VehicleSignal of vehicle speed disconnection Cruise controlling 2Ð1
speed sensor
Signal of vehicle speed abnormality Cruise controlling 2Ð1
SwitchTurning on switch at all times While starter sw on 3Ð1
Turning on switch at the same time. While starter sw on 3Ð1
DTC: Diagnostic Trouble Code
DTC Display Condition
1. While starter switch on and vehicle speed is 0 km/h, the DTC output begins in top priority by cancel switch
turn on and off being repeated three times for 2 sec. while cruise main switch pushing on, and stops the
DTC output whether vehicle speed is more than 10 km/h or the resume switch is turned on.
2. The cruise control unit outputs the DTC(s) in order from small figure of the code.
3. The header of display of DTC(s) is assumed 4 sec., and it is 2 sec. between different kind of codes.
4. The DTC(s) are erased with the starter switch turned off.
DTC Display Format
1. When no DTCs are detected. (The unit : sec.)
2. When two or more DTCs are detected. (The unit ; sec.)
0.25 0.25
Code 1–1 Code 2–2 410.5
11 1 1 1 1 12

8DÐ284 WIRING SYSTEM
Anti-lock Brake System (ABS)
General Description
The circuit consists of EHCU (Electronic Hydraulic
Control Unit), wheel speed sensor, GÐsensor,
stoplight switch or brake switch (w/cruise control),
backup light switch, transmission switchÐ1, 2,
indicator light and data link connector.
EHCU controls brake fluid pressure applied to front
and rear wheels to prevent wheels from locking by
using speed sensor and GÐsensor signals.
Based on wheel speed signals from speed sensor,
EHCU activates solenoid valves incorporated into
the control unit to increase, maintain or decrease
brake fluid pressure.
Refer to AntiÐlock Brake System in Brakes section.

WIRING SYSTEM 8DÐ285
Circuit Diagram (RHD)-1
2.0
Y/G2.0
W/G 3.0
W/G
0.5
LG FL-6 40A
ABS
F-9 20A
ABS
INDICATOR
LIGHT(METER)
BRAKE
SW STOP
LIGHT
SW
ELECTRONIC
HYDRAULIC
CONTROL UNIT4WD CONTROL
UNIT(19)
14
C-413
C-4
3.0
B/Y3.0
B/Y
0.85
L/W0.5
L/W0.5
L/W
2.0
BC-4 10A
ELEC.IGN.STARTER SW
(IG1)STARTER SW
(IG1)
C-10 10A
METER,GAUGE
I-9
I-10156I-9
2H-26H-1619
H-2718 16
5.0
W
0.85
G/W C-14 15A
STOP,A/T CONT. BATT.(+) BATT.(+)
STOP LIGHT
10
C-430.85
G/W (W/CRUISE CONTROL) 0.85
G/W
0.85
G/Y
0.85
G/Y 0.85
G/Y
0.85
G/Y
B-131B-13
4
B-14H-131B-14
2
G-
SENSOR26
C-4 0.5
L/W
0.5
Y/B
0.5
Y/BB-252B-25
1H-151
8
C-4
6C-39
FENDER-RHH-131C-4
15
16
C-4 0.5
L/Y
0.5
L/Y
0.5
Y
0.5
Y
A
2.0
B(DIESEL)
5C-39
FENDER-RHC-4
15
2.0
BC-85
ENG.ROOM-FRTC-4 GROUND GROUND GROUND BATTERY BATTERY G-SENSOR POWER
SUPPLYSILA BRAKE LIGHT
SWITCH
12
4WDABS
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8DÐ286 WIRING SYSTEM
Circuit Diagram (RHD 6V*1)-2
0.5
GR0.5
GR
0.5
O/G0.5
O/B0.5
O/W
0.5
O/G0.5
O/B 0.5
L0.5
G 0.5
W 0.5
B/L0.5
R
0.5
W 0.5
B/L
0.5
O 0.5
O/L 0.5
W/L0.5
W
0.5
O 0.5
O/L 0.5
W/L0.5
W0.5
O 0.5
O/L 0.5
W/L0.5
W0.5
O 0.5
O/L 0.5
W/L0.5
W
0.5
R0.5
O/W0.85
G/W 0.5
P
0.5
B/L0.5
B/L
1.25
B/L
1.0
B/L
ELECTRONIC
HYDRAULIC
CONTROL
UNIT
PCM
(A12)(A/T)
SPEED
SENSORC-4
23
C-4
22
8
H-46H-138
6
H-46H-135
7
H-466
C-4
TMM
GND RLS GND RRS GND FLS GND FRS SDL2DIAG
KDIAG
L TMMTFM2 6
C-49
C-4
8
C-39 1
F-32
F-3H-134
14
H-5
FENDER-RH
COMMON
CHAMBER
(W/O T.O.D.)
SPEED
SENSORC-4
3
C-4
2
11
H-46H-1314
12
H-46
6
H-334
H-335
H-332
H-333
H-33
1
F-22
F-2H-1313
C-4
2C-63
E-305C-63
4
C-63
H-423
C-4
7C-63H-429
C-4
12C-63H-421 25 24 17
16
C-63H-79
SPEED
SENSORC-4
21
C-4
20
H-4215
H-4211
H-4214
1
C-132
C-13
SPEED
SENSOR
FRT-RH FRT-LH
RR-RH RR-LHDATA LINK CONNECTORC-4
5
C-4
4
1
C-412
C-41
A
4WD
$0/530-
UNIT(20)
B
C
C
0.5
P
TFM29C-4T.O.D.
CONTROL UNIT
9H-15
0.5
LG/R
ABS
STATUS27C-4T.O.D.
CONTROL UNIT
20H-15
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WIRING SYSTEM 8DÐ287
Circuit Diagram (RHD 4J**)-2
0.5
GR
0.5
O/B0.5
O/W
0.5
O/B 0.5
L0.5
G 0.5
W 0.5
B/L0.5
R
0.5
W 0.5
B/L
0.5
O 0.5
O/L 0.5
W/L0.5
W0.5
O 0.5
O/L 0.5
W/L0.5
W0.5
O 0.5
O/L 0.5
W/L0.5
W
0.5
R0.5
O/W0.85
G/W
0.5
B0.5
B
ELECTRONIC
HYDRAULIC
CONTROL
UNIT
SPEED
SENSOR
C-4
23
C-4
22
6
H-334
H-335
H-33 8
H-466
H-467
H-4611
H-4215
H-4214
H-42 6
C-4
TMM
GND RLS GND RRS GND FLS GND FRSDIAG
KDIAG
L
1
F-32
F-3
7
C-16
FENDER-LH
SPEED
SENSORC-4
3
C-4
2
2
H-333
H-33 11
H-4612
H-46 0.5
O 0.5
O/L 0.5
W/L0.5
W
8
H-135
H-134
H-1314
H-1313
H-13
1
F-22
F-2
8
C-39
FENDER-RH
5
C-63
4
C-63C-4
7C-639
C-4
12C-63 24 17
16
C-63H-79
SPEED
SENSORC-4
21
C-4
20
1
C-132
C-13
SPEED
SENSOR
FRT-RH FRT-LH
RR-RH RR-LHDATA LINK CONNECTORC-4
5
C-4
4
1
C-412
C-411
H-42
H-42
A
0.5
P
TFM29C-44WD
$0/530-
6/*5(20)
B
C
C
0.5
B
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