fuse box diagram ISUZU TROOPER 1998 Service Repair Manual

6E±319 ENGINE DRIVEABILITY AND EMISSIONS
Fuel Pump Relay
Removal Procedure
1. Remove the fuse and relay box cover from under the
hood.
2. Consult the diagram on the cover to determine which
is the correct relay.
3. Insert a small screwdriver into the catch slot on the
forward side of the fuel pump relay.

The screwdriver blade will release the catch inside.
T321092
4. Pull the relay straight up and out of the fuse and relay
box.
TS23976R
Installation Procedure
1. Insert the relay into the correct place in the fuse and
relay box with the catch slot facing forward.
2. Press down until the catch engages.

An audible ªclickº will be heard.
T321092
3. Install the fuse and relay box cover.
Fuel Rail Assembly
Removal Procedure
NOTE:

Do not attempt to remove the fuel inlet fitting on the
fuel rail. It is staked in place. Removing the fuel inlet
fitting will result in damage to the fuel rail or the
internal O-ring seal.

Use care when removing the fuel rail assembly in
order to prevent damage to the injector electrical
connector terminals and the injector spray tips.

Fittings should be capped and holes plugged during
servicing to prevent dirt and other contaminants from
entering open lines and passages.

6E±325 ENGINE DRIVEABILITY AND EMISSIONS
Spark Plug Gap Check

Check the gap of all spark plugs before installation.

Use a round wire feeler gauge to ensure an accurate
check.

Plugs installed with the wrong gap can cause poor
engine performance and excessive emissions.
Installation Procedure
NOTE: The plug must thread smoothly into the cylinder
head and be fully seated. Use a thread chaser if
necessary to clean the threads in the cylinder head.
Cross-threading or failure to fully seat the spark plug can
cause plug overheating, exhaust blow-by gas, or thread
damage. Do not overtighten the spark plugs. Over
tightening can cause aluminum threads to strip.
1. Install the spark plug in the engine. Use the
appropriate spark plug socket.
Tighten

Tighten the spark plug to 18 N´m (13 lb ft.).
2. Install the ignition coil and spark plug boot over the
spark plug.
014RW108
3. Secure the ignition coil to the rocker cover with two
screws.
014RW091
4. Connect the electrical connector at the ignition coil.
5. Connect the negative battery cable.
Catalytic Converter
Removal and Installation Procedure
Refer to Engine Exhaust in Engine.
Air Conditioning Relay
Removal Procedure
1. Remove the fuse and relay box cover from under the
hood.
2. Consult the diagram on the cover to determine which
is the correct relay.
3. Insert a small screwdriver into the catch slot on the
forward side of the fuel pump relay.

The screwdriver blade will release the catch inside.
T321092

6E±217 4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
Throttle Body (TB)
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the cover of the intercooler.
035RW051
3. Remove the bolts and the left side bracket to the
intercooler.
4. Remove the air duct with bracket from the intercooler.
035RW086
5. Remove the throttle body assembly from the intake
manifold.
6. Disconnect the ITP sensor electrical connector.
Installation Procedure
NOTE: Do not use solvent of any type when you clean the
gasket surfaces on the intake manifold and the throttle
body assembly. The gasket surfaces and the throttle body
assembly may be damaged as a result.
If the throttle body gasket needs to be replaced,
remove any gasket material that may be stuck to the
mating surfaces of the manifold.

Do not leave any scratches in the aluminum casting.
1. Install the throttle body assembly to the intake
manifold and the air duct with bracket between
throttle body and intercooler.
Torque: 20 N´m (14 Ib ft)
035RW086
2. Connect the ITP sensor electrical connector and
throttle motor control connector.
3. Install the bracket to the intercooler.
4. Install the cover of intercooler.
5. Connect the negative battery cable.
Air Conditioning (A/C) Relay
Removal Procedure
1. Remove the fuse and relay box cover from under the
hood.
2. Consult the diagram on the cover to determine which
is the correct relay.
3. Pull the relay straight up and out of the fuse and relay
box.
Installation Procedure
1. Insert the relay into the correct place in the fuse and
relay box with the catch slot facing forward.
2. Press down until the catch engages.

An audible ªclickº will be heard.
3. Install the fuse and relay box cover.
Exhaust Gas Recirculation
(EGR) Vacuum Switch Valve
(VSV)
Removal Procedure
1. Disconnect the negative battery cable.

8DÐ54 WIRING SYSTEM
Circuit Diagram (6V
*1) Ð 1
3
P-2H-142
2B-11
P-10
P-7
PCM
(A4)
CONDENSER
FANEHCU STARTER
(B)
STARTER
RELAY
(3)
P-6BODY ENGINE FRAMEBATTERY
STARTER
SWRELAY & FUSE BOX
CONDENSER
FAN
RELAY
FL-2 50A
KEY SWFL-3 30A
PCMFL-4 30A
CONDENSER
FANFL-6 40A
ABS FL-1 80A
MAIN 8.0
B/R
8.0
B30.0
B8.0
B30.0
B/R
3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y3.0
W/G3.0
B/R3.0
L/B2.0
W1.25
L/O
1.25
L3.0
W/G
3.0
W/B5.0
W
5.0
W
3.0
W/B
B-11IG1 ST IG2 ACC B1
7
EF
A
B-11
3B
B-11
5C
B-11
1DB2
OFF 4
B-11
P-5P-1´
µ
X-191X-19
üZ
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C« Ô
1l ò8

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WIRING SYSTEM 8DÐ55
Circuit Diagram (RHD 6V
*1) Ð 2
E
HORN ANTI-THEFT
HORNFOG
LIGHT 2.0
G/O5.0
W3.0
W
5.0
W5.0
W5.0
W5.0
W
5.0
W 5.0
W5.0
W5.0
W 3.0
W
3.0
W 3.0
R/B F-3 15A
HORN
HAZARDF
TAIL RELAY
(1)(2)
HEADLIGHT
AC GENERATOR
(B) 0.85
R/BF-12 15A
TAIL
ILLUMI
0.85
OF-7 15A
ANTI-
THEFT
5.0
W 5.0
W3.0
Y/RF-8 20A
FRT FOG
LIGHTING
RELAY RELAY & FUSE BOX
3.0
W
1
X-1
4
3X-1
X-1
2
H-21
H-2
1
H-14
H
G
D08RWB14

8DÐ56 WIRING SYSTEM
Circuit Diagram (LHD 6V
*1) Ð 2
E
HORN ANTI-THEFT
HORNFOG
LIGHT 2.0
G/O5.0
W
5.0
W5.0
W5.0
W5.0
W
5.0
W 5.0
W5.0
W5.0
W 3.0
W
3.0
W 3.0
R/B F-3 15A
HORN
HAZARDF
HEADLIGHT
AC GENERATOR
(B)
0.85
OF-1 15A
ANTI-
THEFT
5.0
W 5.0
W3.0
Y/RF-8 20A
FRT FOG
LIGHTING
RELAY RELAY & FUSE BOX
3.0
W
1
X-1
4
3X-1
X-1
2
H-21
H-2
1
H-14
H
G
D08RWC55

WIRING SYSTEM 8DÐ57
Circuit Diagram (6V
*1) Ð 3
A
B
3.0
B/Y3.0
B/Y
3.0
B/Y3.0
B/Y3.0
W/G3.0
B/R
3.0
B/R 3.0
B/Y
0.5
R/B
HAZARD
WARNING
SW
(8)PCM
MAIN
RELAY
(1)IGNITION
COILMETER STARTER
RELAY
(6)SEAT
HEATERWINDSHIELD
WIPER
MOTORRR
WIPER
MOTORHEADLIGHT
WIPER
MOTOR
AC GENERATOR
(IG) ALARM & RELAY
CONTROL UNIT C-3 10A
TURN
BACK
0.5
L/WC-4 10A
ELEC.
IGN.
0.5
L/YC-10 10A
METER
GAUGE
0.5
W/RC-1 10A
STARTER
RELAY
0.85
W/LC-5 15A
FRT WIPER
& WASHERC-6 10A
RR WIPER
& WASHERC-7 10A
H/LAMP
WIPER
FUSE BOX
1.25
B/OC-9 15A
IG COIL C-8 15A
ENGINE
0.5
L/B
0.85
B/Y
0.85
B/Y
0.5
R
0.75
B/R
SDM
(12)C-21 10A
SRS
C
1.25
G/RC-2 15A
SEAT
HEATER
H-631
3
H-63

D08RWB15

8DÐ58 WIRING SYSTEM
Circuit Diagram (6V
*1) Ð 4
D
H
G
3.0
W
3.0
L/R 3.0
L/B
0.5
O/G
AUDIO
CIGARETTE
LIGHTERBLOWER
MOTORMAGNETIC
CLUTCHPOWER
WINDOW
RELAY
(2)STOPLIGHT AUDIO
(14)
DOME LIGHTRR DEFOGGER
FRT DOOR LOCK &
POWER WINDOW SW C-11 10A
AUDIO
(ACC)
MIRROR
0.5
BRC-20 10A
AIR CON
0.85
G/WC-14 15A
STOP
A/T CONT
1.25
R/WC-15 20A
AUDIO (B)
3.0
L/OC-17 25A
RR
DEFOG
FUSE BOX
1.25
O/BC-12 20A
CIGAR
3.0
LC-19 25A
BLOWER
3.0
B/L 3.0
W5.0
W 5.0
W
5.0
W
C/B-2 30A
P/W,P/S,
S/R
0.5
R/WC-16 10A
CLOCK (B)
ROOM
1.25
LG/WC-18 20A
DOOR
LOCK
HEATER &
A/C RELAY
B-36
2
B-364
D08RWB16

WIRING SYSTEM 8DÐ59
Circuit Diagram (4JX1) Ð 1
P-2H-142
2B-11
P-10
P-7
STARTER
RELAY
(4)
P-6BODY ENGINE FRAMEBATTERY
STARTER
SWFUSE & RELAY BOX
FL-2 50A
KEY SW FL-1 80A
MAIN 8.0
B/R
8.0
B30.0
B8.0
B
3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y3.0
W/G3.0
B/R3.0
L/B 3.0
W/B 3.0
W/B 30.0
B/R
B-11IG1 ST IG2 ACC B1
7
EFG
A
B-11
3B
B-11
5C
B-11
1DB2
OFF 4
B-11
STARTER
(B)
P-5P-1´
µ
X-112
4X-11ECM
(J3-1)
ECM
RELAY-1
FL-4 50A
ECM
3.0
R 3.0
W/B
X-102
4X-10ECM
(J3-2)
ECM
3&-":
3.0
R/W3.0
W/B
D08RWB17

8DÐ60 WIRING SYSTEM
Circuit Diagram (4JG2) Ð 1
P-2H-142
2B-11
P-10
P-7
STARTER
RELAY
(4)
P-6BODY ENGINE FRAMEBATTERY
STARTER
SWFUSE & RELAY BOX
FL-2 50A
KEY SW FL-1 80A
MAIN 8.0
B/R
8.0
B30.0
B8.0
B
3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y3.0
W/G3.0
B/R3.0
L/B 3.0
W/B 3.0
W/B 30.0
B/R
B-11IG1 ST IG2 ACC B1
7
EFG
A
B-11
3B
B-11
5C
B-11
1DB2
OFF 4
B-11
STARTER
(B)
P-5P-1´
µ
X-191
3X-19
CONDENSER
FAN
CONDENSER
FAN
RELAY
FL-4 30A
CONDENSER
FAN
1.25
L 1.25
L/O
D08RWC54