1998 ISUZU TROOPER warning light

WIRING SYSTEM 8D – 543
Supplemental Restraint System (SRS) – Air Bag
General Description
The circuit consists of Sensing and Diagnostic Mod-
ule (SDM), driver’s air bag assembly, SRS coil assem-
bly, passenger’s air bag assembly, and “AIR BAG”
warning light. SDM, SRS coil assembly (driver side
only), driver air bag assembly, passenger air bag
assembly and connector wire make up the deploy-
ment loops. The function of the deployment loops is
to supply current through air bag assembly, which
will cause deployment of the air bags in the event of
a frontal crash of sufficient force, up to 30 degrees off
the center line of the vehicle. The air bag assemblies
are only supplied enough current to deploy when the
SDM detects vehicle velocity changes severe enough
to warrant deployment.
The SDM contains a sensing device which converts
vehicle velocity changes to an electrical signal.
The electrical signal generated is processed by the
SDM and then compared to a value stored in memory.
When the generated signal exceeds the stored value,
the SDM will cause current to flow through the air bag
assembly deploying the air bags.
Refer to Supplemental Restraint System in Restraints
section.

8D – 544 WIRING SYSTEM
Circuit Diagram (6VD1)
D08RW605
PASSENGER
INFLATOR
MODULEDATA LINK
CONNECTOR
I-9
24
SRS
WARNING
LIGHT
(METER)
SDM
3.0
B/Y STARTER SW
(IG1)
C-21 10A
0.5
L/Y FUSE C-10I-915H-622
0.5
W/R0.5
W/R 0.75
B/RU-57
I-9
2
SRS
WARNING
LIGHT
(METER)
0.5
L/Y FUSE C-10(W/T.O.D)I-926H-622
0.5
W/R0.5
W/RU-57
0.75
Y0.75
Y/B
U-5
3U-62
U-5
4U-6
SRS COIL
ASSEMBLY
DRIVER
INFLATOR
MODULE1
U-512
0.75
Y/G0.75
Y/R
0.5
B
U-5
15U-11
•Terminals marked with a star ( ) are gold plated.
U-5
16U-1
BODY-FRTCOMMON
CHAMBER 2
U-5
6
U-5
0.5
GR
0.5
GR
0.5
B/L
1.0
B/L 1.25
B/L 1H-612
13
U-2
C-63
U-5
0.5
O
0.5
GR0.5
O
0.5
O24H-611
H-652
H-651
9C-63
0.85
G/W
0.85
G/WH-7 FUSE C-14
9
16C-63
5
C-63E-30H-514
0.5
B/LC-63
4

WIRING SYSTEM 8D – 545
Circuit Diagram (4JG2)
D08RW990
PASSENGER
INFLATOR
MODULEDATA LINK
CONNECTOR
I-9
24
SRS
WARNING
LIGHT
(METER)
SDM
3.0
B/Y STARTER SW
(IG1)
C-21 10A
0.5
L/Y FUSE C-10
I-915H-622
0.5
W/R0.5
W/R 0.75
B/RU-57
0.75
Y0.75
Y/B
U-5
3U-62
U-5
4U-6
SRS COIL
ASSEMBLY
DRIVER
INFLATOR
MODULE1
U-512
0.75
Y/G0.75
Y/R
0.5
B
U-5
15U-11
•Terminals marked with a star ( ) are gold plated.
U-5
16U-1
BODY-FRT 2
U-5
6
U-5
0.5
GR
0.5
GR
0.5
B/L 1H-612
13
U-2
C-63
U-5
0.5
O
0.5
GR0.5
O
0.5
O24H-611
H-652
H-651
9C-63
0.85
G/W
0.85
G/W
H-7 FUSE C-14
9
16C-63
5
C-63
0.5
B
FENDER
-LHC-63C-168 4

8D – 546 WIRING SYSTEM
Circuit Diagram (6VE1 South Africa)-1
D08RWB41
PASSENGER
INFLATOR
MODULEDATA LINK
CONNECTOR
I-9
24
SRS
WARNING
LIGHT
(METER)
SDM
3.0
B/Y STARTER SW
(IG1)
C-21 10A
0.5
L/Y FUSE C-10
I-915H-622
0.5
W/R0.5
W/R 0.75
B/RU-57
I-9
2
SRS
WARNING
LIGHT
(METER)
0.5
L/Y FUSE C-10(W/T.O.D)
I-926H-622
0.5
W/R0.5
W/RU-57
0.75
Y0.75
Y/B
U-5
3U-62
U-5
4U-6
SRS COIL
ASSEMBLY
DRIVER
INFLATOR
MODULE1
U-512
0.75
Y/G0.75
Y/R
0.5
B
U-5
15U-11
•Terminals marked with a star ( ) are gold plated.
U-5
16U-1
BODY-FRTCOMMON
CHAMBER 2
U-5
6
U-5
0.5
GR
0.5
GR
0.5
B/L
1.0
B/L 1.25
B/L 1H-612
13
U-2
C-63
U-5
0.5
O
0.5
GR0.5
O
0.5
O24H-611
H-652
H-651
9C-63
0.85
G/W
0.85
G/W
H-7 FUSE C-14
9
16C-63
5
C-63E-30H-514
0.5
B/LC-63
4

METER AND GAUGE8E–1
METER AND GAUGE
CONTENTS
Service Precaution 8E–1. . . . . . . . . . . . . . . . . . . . . .
General Description 8E–1. . . . . . . . . . . . . . . . . . . . .
Meter Assembly 8E–2. . . . . . . . . . . . . . . . . . . . . . . . .
General Description 8E–2. . . . . . . . . . . . . . . . . . . . .
Layout for Meters/Gauges, Warning Lights,
Indicator Lights and Illumination Lights 8E–2. . .
Table for Meter/Gauge Connector Terminal
Connections 8E–8. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E–14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Light Bulb, Indicator Light Bulb,
Illumination Light Bulb, A/T Indicator
Light Bulb 8E–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . Vehicle Speed Sensor 8E–15. . . . . . . . . . . . . . . . . . .
Removal 8E–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E–15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tank Unit 8E–15. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E–15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multi Meter 8E–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E–16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient Sensor 8E–16. . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8E–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8E–16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 8E–17. . . . . . . . . . . . .
Service Precaution
WARNING: I F S O E Q U IPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
General Description
The circuit consists of the starter switch, meter assembly,
vehicle speed sensor, transmission switch, lighting
switch, turn signal switch, thermo unit, oil pressure unit,
Powertrain Control Module (PCM), fuel tank unit, 4WD
switch, oil pressure switch, parking brake switch, brake
fluid switch, seat belt switch, illumination controller, multi
meter and ambient sensor.

8E–2METER AND GAUGE
Meter Assembly
General Description
The meter assembly has the speedometer, tachometer,
engine coolant temperature gauge, fuel gauge and
warning/indicator lights. In addition, the meter assembly
containing TOD (Torque on Demand) has the TOD
indicator light, or the meter assembly not containing TOD
has the voltmeter and oil pressure gauge instead of the
TOD indicator.
Layout for Meters/Gauges, Warning Lights, Indicator Lights and Illumination
Lights
Meter Assembly–Gasoline W/O TOD (Front View)
825RW207
Legend
(1) Voltmeter & Engine Coolant Temperature
Gauge
(2) Tachometer
(3) Warning Light Lens
(4) Speedometer(5) Oil Pressure Gauge & Fuel Gauge
(6) Warning Light Lens
(7) Reset Knob
(8) A/T Shift Indicator
(9) Warning Light Lens

8E–4METER AND GAUGE
Meter Assembly–Gasoline W/TOD (Front View)
825RW210
Legend
(1) TOD Indicator
(2) Tachometer
(3) Warning Light Lens
(4) Speedometer(5) Coolant Temperature Gauge & Fuel Gauge
(6) Warning Light Lens
(7) Reset Knob
(8) A/T Shift Indicator
(9) Warning Light Lens

8E–6METER AND GAUGE
Meter Assembly–Diesel (Front View)
825RW211
Legend
(1) TOD Indicator
(2) Tachometer
(3) Warning Light Lens
(4) Speedometer(5) Coolant Temperature Gauge & Fuel Gauge
(6) Warning Light Lens
(7) Reset Knob
(8) Warning Light Lens