1998 ISUZU TROOPER oil pressure

8DÐ456 WIRING SYSTEM
5-3 Needle Overshoots (Goes Up To 15 (x100 kPa))
• IS THE CONNECTOR OF THE OIL PRESSURE UNIT E-2
OR E-12 CONNECTED SECURELY?
YES
• IS THE OIL PRESSURE UNIT NORMAL?
YES
YESNO
NO
NO
• IS THERE AN OPEN CIRCUIT IN THE CIRCUIT
BETWEEN THE OIL PRESSURE UNIT AND THE
OIL PRESSURE GAUGE?RECONNECT THE CONNECTOR
REPLACE THE OIL PRESSURE UNIT
REPLACE THE METER ASSEMBLY
REPAIR A POOR CONECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT IN THE CIRCUIT

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

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

METER AND GAUGE8E–9
Meter Assembly–Gasoline W/O TOD–2
Connector No. I–9
TerminalFunction
1A/T oil temp warning light
2Seat belt warning light
3Check trans warning light
4Brake warning light
5Check engine warning light
6Charge warning light
7Cigarette lighter illumination light
8Illumination controller
9Tachometer
10D position (A/T)
11—
12A/T shift indicator control unit
13—
142 position (A/T)
15Starter switch
16Cruise set indicator light
17Cruise main indicator light
184WD indicator light
19Ground (Gauge)
20—
21Winter drive indicator light
22Oil pressure warning light
23—
24Air bag warning light
25Power drive indicator light
26—
27—
28Turn signal indicator light (Left)
29—
30Ground
Connector No. I–10
TerminalFunction
1Turn signal indicator light (Right)
2L position (A/T)
3R position (A/T)
4Engine coolant temperature gauge
5Speedometer
6—
7—
8Battery (+)
9—
10Rear fog light
11P position (A/T)
12N position (A/T)
133 position (A/T)
14High-beam indicator light (–)
15High-beam indicator light (+)
16ABS indicator light
17—
18Fuel warning light
19Oil pressure gauge
20Fuel gauge
21—
22—

METER AND GAUGE8E–11
Meter Assembly–Gasoline W/TOD–2
Connector No. I–9
TerminalFunction
1—
2Air bag warning light
3A/T oil temp warning light
4Charge warning light
5Check engine warning light
6Check trans warning light
7Brake warning light
8—
9Tachometer
10—
11Turn signal indicator light (Left)
12A/T shift indicator control unit
132 position (A/T)
14D position (A/T)
15Rear (TOD)
16Auto (TOD)
17Check (TOD)
18Cruise set indicator light
19Cruise main indicator light
20Oil pressure warning light
21Front “1” (TOD)
22Front “2” (TOD)
23Front “3” (TOD)
24Cigarette lighter illumination light
25Illumination controller
26Starter switch
27—
28Winter drive indicator light
29Power drive indicator light
30—
Connector No. I–10
TerminalFunction
1Turn signal indicator light (Right)
2L position (A/T)
3R position (A/T)
4Check engine warning light
5Speedometer
6—
7—
8Battery (+)
9Engine coolant temperature gauge
10Ground
11P position (A/T)
12N position (A/T)
133 position (A/T)
14High beam indicator light (–)
15High beam indicator light (+)
16ABS indicator light
17—
18Fuel warning light
19—
20Fuel gauge
21Ground (Gauge)
22—

METER AND GAUGE8E–13
Meter Assembly–Diesel–2
Connector No. I–9
TerminalFunction
1—
2Seat belt warning light
3—
4Brake warning light
5—
6Charge warning light
7Cigarette lighter illumination light
8Illumination controller
9Tachometer
10—
11—
12—
13—
14—
15Starter switch
16—
17—
184WD indicator light
19Ground (Gauge)
20—
21—
22Oil pressure warning light
23Water sedimenter
24Air bag warning light
25—
26Glow indicator light
27—
28Turn signal indicator light (Left)
29—
30Ground
Connector No. I–10
TerminalFunction
1Turn signal indicator light (Right)
2—
3—
4Engine coolant temperature gauge
5Speedometer
6—
7—
8Battery (+)
9—
10—
11—
12—
13—
14High-beam indicator light (–)
15High-beam indicator light (+)
16ABS indicator light
17—
18Fuel warning light
19Oil pressure gauge
20Fuel gauge
21—
22—