1998 ISUZU TROOPER oil pressure

WIRING SYSTEM 8D – 423
Circuit Diagram (RHD 4JG2)-1
%38
6
C-3910H-41
0.5
B/R0.5
B 0.5
B/R
B
EG
F
D
A
FENDER-RH
H-514E-20
2A 0.5
Y 0.5
L/Y0.5
L/Y
1
E-2016H-5H-93
0.5
LG/W0.5
LG/W
0.3
LG/W0.3
LG/W 0.5
LG/W0.5
R/W
SPEEDO-
METER
RESET
SWTACHOMETERENGINE
COOLANT
TEMPERATURE
GAUGEFUEL
GAUGEOIL
PRESSURE
GAUGE FUSE C-15
3
E-20125H-9
15H-5
VEHICLE
SPEED SENSOR
I-10
0.5
Y/B0.5
Y/B0.5
Y/B
1
E-191 4H-24
4H-5I-10
QOS-III
CONTROL
UNIT
(9)QOS/EGR
CONTROL
UNIT
(16)0.5
BR
0.5
BR
0.5
BR
0.5
BP15
H-9
6H-49I-9
1E-36
0.5
Y/R
14H-2520I-10
ENGINE
COOLANT
TEMPERATURE
UNIT TACHO
SENSOR
0.5
Y/V0.5
LB 0.5
Y/V0.5
Y/B
1E-217 19H-9
2H-5
2
E-23H-5
C
0.5
BP 0.5
BP
6
C-39
FENDER-RH4H-42
I-10
OIL
PRESSURE
UNIT
8
I-10
METER
ODO/TRIP
METER
E-36
2
10H-4C

8D – 424 WIRING SYSTEM
%38
Circuit Diagram (RHD 4JG2)-2
BDE
G
H
4 182215 18
14 26
2 24
2 16
19 156
VOLT
METERC-10 10A
METER, GAUGE
ABS
22
C-39 H-16I-9
QOS/EGR CONTROL
UNIT(5)
QOS III CONTROL
UNIT(13)SDM
(7)EHCU
(16)
0.3
Y/G0.5
P/W0.5
W/R0.5
Y 0.85
B/PH-26
I-9 0.5
L/Y0.5
L/Y0.5
L/Y3.0
B/Y STARTER SW
(IG1)
0.5
LB
0.85
B/P
FENDER-RH
I-9
H-9I-10
H-25I-9
H-9I-9
H-62I-10
H-16 OIL
PRESSUREFUEL GLOW AIR BAG
METER
I

WIRING SYSTEM 8D – 431
D08RW924
Circuit Diagram (LHD 6V*1 W/O T.O.D)-1
8
C-3910H-42
0.5
B/R0.5
B/R 0.5
B/R
B
DC
A
FENDER-RH
H-104M-10
2A
I 0.5
L/Y0.5
L/Y0.5
L/Y
1
M-109H-105H-24
0.5
LG/W0.5
LG/W
0.5
LG/W0.5
LG/W 0.5
LG/W0.5
R/W
SPEEDO-
METER
RESET
SWTACHOMETERENGINE
COOLANT
TEMPERATURE
GAUGEFUEL
GAUGEOIL
PRESSURE
GAUGE FUSE C-15
3
M-10145H-9
11H-10
VEHICLE
SPEED SENSOR
I-10
0.5
Y/B0.5
Y/B0.5
Y/B
1
E-191 4H-9
11H-6I-10
8
H-8
PCM
(D7)CRUISE CONTROL
UNIT(9)0.5
B/R
18
H-9
PCM
(C10)9I-9
0.5
Y/R
13H-2620I-10
ENGINE
COOLANT
TEMPERATURE
UNIT
0.5
Y/G0.5
Y/B0.5
Y/B
1E-212 19H-9
10H-6I-10
OIL
PRESSURE
UNIT
8
I-10
METER
ODO/TRIP
METER

WIRING SYSTEM 8D – 433
D08RW926
Circuit Diagram (LHD 6V*1 W/O T.O.D)-3
GHF
E
16
13 CRUISE
SETCRUISE
MAINAIR BAG ABS 4WD BRAKEEHCU:ELECTRONIC HYDRAULIC CONTROL UNIT
OIL
PRESSURE
CRUISE
CONTROL
UNIT(14)0.3
B/OI-9
H-4817
12
CRUISE
CONTROL
UNIT(13) 0.3
GR/LI-9
H-4824
2
SDM
(7)SDM
(20) 0.5
W/RI-9
H-6216
18
EHCU
(16)
OIL PRESSURE
SWBRAKE
FLUID
SW SEAT
BELT
SWPARKING
BRAKE
SW
0.5
YI-10
H-1618
22
4WD
CONTROL
UNIT(19)/
FRT AXLE
SW(2)
OR
4WD SW(1)0.5
LGI-9
H-2522
16
12
1 0.5
LB
0.5
LB0.5
B/P
0.85
B0.5
B/P0.5
B/P
0.5
LBI-9
H-9
H-6
E-1
SEAT
BELT
2
11 0.3
L
0.5
L
2.0
B2.0
B2.0
B 0.5
BI-9
B-24 H-25
1
2 H-244
1
2 17
215
1
FENDER-LH0.5
B/PI-9
H-9
C-15
C-16
BODY-CTR BODY-LH BODY-RHB-26
B-18
B-2C-15H-25
B-27
METER

WIRING SYSTEM 8D – 437
D08RW915
Circuit Diagram (LHD 4JG2)-1
8
C-3910H-41
0.5
B/R0.5
B 0.5
B/R
B
EG
F
D
A
FENDER-RH
H-514E-20
2A 0.5
Y 0.5
L/Y0.5
L/Y
1
E-2016H-5H-245
0.5
LG/W0.5
LG/W
0.3
LG/W0.3
LG/W 0.5
LG/W0.5
R/W
SPEEDO-
METER
RESET
SWTACHOMETERENGINE
COOLANT
TEMPERATURE
GAUGEFUEL
GAUGEOIL
PRESSURE
GAUGE FUSE C-15
3
E-20145H-9
15H-5
VEHICLE
SPEED SENSOR
I-10
0.5
Y/B0.5
Y/B0.5
Y/B
1
E-191 4H-9
4H-5I-10
QOS-III
CONTROL
UNIT
(9)QOS/EGR
CONTROL
UNIT
(16)0.5
BR
0.5
BR
0.5
BR
0.5
BP18
H-9
6H-49I-9
1E-36
0.5
Y/R
13H-2620I-10
ENGINE
COOLANT
TEMPERATURE
UNIT TACHO
SENSOR
0.5
Y/V0.5
LB 0.5
Y/V0.5
Y/B
1E-212 19H-9
2H-5
2
E-23H-5
C
0.5
BP 0.5
BP
7
C-39
FENDER-RH4H-42
I-10
OIL
PRESSURE
UNIT
8
I-10
METER
ODO/TRIP
METER
E-36
2
10H-4C

8D – 438 WIRING SYSTEM
D08RW916
Circuit Diagram (LHD 4JG2)-2
B
I
G
DE
H
6 1169 18
1 26
2 24
18 16
19 15 10
VOLT
METERC-10 10A
METER, GAUGE
ABS
22
C-39 H-16I-9
QOS/EGR
CONTROL
UNIT(5)SDM
(7)EHCU
(16)
0.3
Y/G0.5
P/W0.5
W/R0.5
Y 0.85
B/PH-25
I-9 0.5
L/Y0.5
L/Y0.5
L/Y3.0
B/Y STARTER SW
(IG1)
0.5
LB
0.85
B/P
FENDER-RH
I-9
H-9I-10
H-25I-9
H-24I-9
H-62I-10
H-16 OIL
PRESSUREFUEL GLOW AIR BAG
METER

8DÐ454 WIRING SYSTEM
5. Oil Pressure Gauge
5-1 Needle Does Not Move
·
·DISCONNECT THE CONNECTOR OF THE OIL PRESSURE UNIT
WHEN THE STARTER SW IS TURNED ON, DOES THE NEEDLE
REMAIN STILL?
YES
·IS THERE A SHORT CIRCUIT BETWEEN THE OIL
PRESSURE UNIT AND THE OIL PRESSURE GAUGE?
YES
REPLACE THE OIL PRESSURE UNIT
NO
NO
REPLACE THE METER ASSEMBLYREPAIR THE SHORT CIRCUIT

WIRING SYSTEM 8DÐ455
5-2 Oil Pressure Gauge Reading Is Too Low (Or High)
·(WHEN THE OIL PRESSURE IS MEASURED WITH THE MASTER
METER)
DOES THE OIL PRESSURE GAUGE SHOWS THE CORRECT
READING?
YES
·WHEN INSERTING AND PULLING OUT THE OIL
PRESSURE UNIT CONNECTOR E-2 OR E-12
SEVERAL TIMES, DOES THE INDICATION OF THE OIL
PRESSURE GAUGE CHANGE?
YES
CHECK FOR POSSIBLE ENGINE PROBLEM
(REFER TO ENGINE SECTION)
NO
REPAIR A POOR CONNECTION AT THE CONNECTOR
OF THE OIL PRESSURE UNIT
NO
·IS THE OIL PRESSURE UNIT NORMAL?
YES
REPLACE THE OIL
PRESSURE UNIT
NO
REPLACE THE METER
ASSEMBLY