1998 ISUZU TROOPER warning

WIRING SYSTEM 8DÐ235
1 Horns Do Not Sound
·IS FUSE F-3 (15A) NORMAL?
YES
·IS THE HORN RELAY NORMAL? REPLACE THE FUSE
NO
YES
·IS THE BATTERY VOLTAGE APPLIED BETWEEN
2 X-8 AND THE GROUND?REPLACE THE HORN RELAY
NO
YES
·IS THE HORN SWITCH NORMAL?
NO
YESNO
NOYES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN FUSE F-3 (15A) AND 2 X-8
·
·WITH THE HORN SWITCH DEPRESSED,
IS THERE CONTINUITY BETWEEN 1 X-8 AND
THE GROUND?REPAIR OR REPLACE THE SWITCH
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT BETWEEN
1 X-8 AND 12 B-12REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 3 X-8 AND 1 C-27 (1 C-28 )
WARNING:
WHEN SERVICING A VEHICLE EQUIPPED WITH SUPPLEMENTAL RESTRAINT SYSTEM, PAY
CLOSE ATTENTION TO ALL WARNINGS AND CAUTIONS.
FOR DETAILED EXPLANATION ABOUT SRS, REFER TO SECTION 9J ÒSUPPLEMENTAL
RESTRAINT SYSTEM (SRS)Ó AND 3F4 ÒSUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL
& COLUMNÓ.

8DÐ236 WIRING SYSTEM
2 Horns Do Not Shut Off
·IS THE HORN RELAY NORMAL?
YES
·
·REMOVE THE HORN SW
IS THE MOVABLE PORTION OF THE HORN SW ALWAYS OUT
OF CONTACT WITH THE GROUND BRACKET?REPLACE THE HORN RELAY
NO
YES
REPAIR A SHORT CIRCUIT BETWEEN HORN RELAY HARNESS
SIDE CONNECTOR 1 X-8 AND 12 B-12REPAIR OR REPLACE THE HORN SW
NO
WARNING:
WHEN SERVICING A VEHICLE EQUIPPED WITH SUPPLEMENTAL RESTRAINT SYSTEM, PAY
CLOSE ATTENTION TO ALL WARNINGS AND CAUTIONS.
FOR DETAILED EXPLANATION ABOUT SRS, REFER TO SECTION 9J ÒSUPPLEMENTAL
RESTRAINT SYSTEM (SRS)Ó AND 3F4 ÒSUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL
& COLUMNÓ.

WIRING SYSTEM 8D – 383
Circuit Diagram (RHD)-2
D08RW705
X-165
X-164
F-7 15A
ANTI THEFT
ANTI-THEFT
HORNANTI-THEFT
RELAY
0.5
O/B HORN
0.5
G/Y0.5
G/Y0.85
P/B
X-162 0.85
G/O 0.85
G/O 0.85
G/O
0.5
O/B 0.85
G/O 0.85
G/O5.0
W BATT.(+)
B-228
B-2221H-1517
H-136C-192C-19
1
X-16
6
X-16
1SIDE
TURN
SIGNAL
LIGHT0.85
G/B
X-16
3
REAR
TURN
SIGNAL
LIGHT
ANTI-THEFT & KEYLESS ENTRY CONTROL UNIT3
H-1612X-8
X-8 X-82
1
HORN RELAY
2.0
G/O0.85
G/O
0.3
B/O
0.3
B/O0.85
G/Y
0.3
B/O 2.0
G/O5.0
WBATT.(+)
F-3 15A
HORN, HAZARD FL-1 80A
MAIN
HAZARD
WARNING SW
(2)
12
B-12
HORN SW
H-1516
B-227

8D – 410 WIRING SYSTEM
Meter and Warning/Indicator Light
General Description
The circuit consists of meter assembly vehicle speed
sensor, engine coolant temperature sensor, seat belt
switch, oil pressure switch, brake fluid switch, park-
ing brake switch and other some switches and sen-
sors.
Meter assembly contains speedometer, tachometer,
voltmeter, engine coolant temperature gauge, oil
pressure gauge, fuel gauge, warning/indicator light
and illumination light.

8DÐ460 WIRING SYSTEM
7. Warning/Indicator Light
7-1 When The Parkng Brake Lever Is Pulled, The Indicator Light Does Not Light Up
·
·
·DISCONNECT THE PARKING BRAKE SWITCH CONNECTOR
CONNECT THE HARNESS SIDE CONNECTOR TO THE
GROUND
WHEN THE STARTER SWITCH IS TURNED ON, DOES THE
INDICATOR LIGHT LIGHT UP?
YES
·IS THE PARKING BRAKE SWITCH INSTALLED
TO THE CORRECT POSITION?
NO
·DOES THE INDICATOR LIGHT HAVE A BURNED OUT
BULB, OR IS THE SOCKET POORLY CONNECTED?
YES
REPLACE THE METER
ASSEMBLY
NO
REPLACE THE BULB OR REPAIR
THE POOR CONNECTION AT THE
SOCKET
YES
·WHEN THE PARKING BRAKE IS
OPERATED, IS THERE CONTINUITY
BETWEEN THE SWITCH CONNECTOR
1 B-27 AND GROUND?
NO
ADJUST THE INSTALLATION POSITION
NO
REPAIR OR REPLACE THE PARKING BRAKE SWITCH

8DÐ462 WIRING SYSTEM
7-3 While The Engine Is Operating, The Oil Pressure Warning Light Does Not Go Off
·
IS THE ENGINE OIL PRESSURE NORMAL?
YES
·WITH THE OIL PRESSURE SWITCH CONNECTOR
E-1 OR E-2 DISCONNECTED, DOES THE
WARNING LIGHT GO OFF?
YES
REFER TO THE “ENGINE” SECTION
NO
REPAIR A SHORT CIRCUIT BETWEEN 1 E-1
OR 2 E-12 AND THE METER
NO
·WHILE THE ENGINE IS OPERATING, IS THERE
CONTINUITY BETWEEN THE OIL PRESSURE SWITCH
CONNECTOR 1 E-1 AND THE BODY GROUND?
YES
REPLACE THE METER ASSEMBLYREPLACE THE OIL PRESSURE SWITCH
NO
7-4 Even When The Fuel Tank Is Full With Fuel, The Low Fuel Warning Light Lights Up
·WHEN THE ALARM & RELAY CONTROL UNIT
CONNECTOR B-7 IS DISCONNECTED,
DOES THE WARNING LIGHT GO OFF?
YES
·IS THE FUEL TANK UNIT NORMAL?
YES
REPLACE THE METER ASSEMBLY
REPAIR A SHORT CIRCUIT BETWEEN THE ALARM
& RELAY CONTROL UNIT HARNESS SIDE
CONNECTOR 6 B-7 AND 18 I-10 (METER)
NO
REPLACE THE FUEL TANK UNIT
NO

WIRING SYSTEM 8DÐ463
7-5 Even When The Fuel Tank Is Empty, The Low Fuel Warning Light Does Not Light Up
·DOES THE WARNING LIGHT HAVE A BURNED OUT
BULB, OR IS THE SOCKET POORLY CONNECTED?
·
·DISCONNECT THE ALARM &
RELAY CONTROL UNIT
CONNECTOR B-7
WHEN CONNECT THE
HARNESS SIDE CONNECTOR
6 B-7 WITH THE GROUND,
DOES THE WARNING LIGHT
LIGHT UP?
YES
·IS THE FUEL TANK UNIT NORMAL?REPLACE THE BULB, OR REPAIR A POOR
CONNECTION AT THE SOCKET
NO
REPLACE THE FUEL TANK
UNIT
NOYES
REPLACE THE ALARM &
RELAY CONTROL UNITREPAIR A POOR
CONNECTION AT THE
CONNECTORS OR AN OPEN
CIRCUIT BETWEEN 6 B-6
AND THE METER
NOYES

8D – 526 WIRING SYSTEM
Circuit Diagram (RHD 6V*1 Push Button Type)-1
D08RW844
4
I-12
8
5
H-9
3.0
B/Y
0.5
L/W
0.5
L/W
0.85
L/W0.5
R/W0.3
R/G 0.85
L/W0.5
L/W
0.85
G/R
0.5
R/W C-4 10A
ELEC.IGN.
4WD SW
(INSTRUMENT
PANEL)
4WD CONTROL UNIT
STARTER SW
(IG1)
20
H-2514
H-16
7
H-12
6
I-12
17
C-94
TAIL RELAY
(4)
ILLUMINATION
CONTROLLER(3)
3
I-122I-12
C-94
E-301.0
B/L0.5
B/L
1.25
B/L
COMMON
CHAMBER
16
C-94
INDICATOR/
WARNING LIGHT
(METER)
3.0
B/Y
C-10 10A
METER,GAUGE STARTER SW
(IG1)
19
C-9419H-27 0.5
L/Y0.5
L/Y
0.5
LG
0.5
LG
18H-7
0.5
LG0.85
W/G
AC GENERATOR
(L) 18I-915I-9
6
I-9
4WD
CHARGEH-266
0.85
W/G
CHARGE RELAY
(1)
6
I-9
CHARGE
14
H-5
7
C-16 0.5
B
FENDER-LH
16
(4JG2)(4JG2)
C-94