1998 ISUZU TROOPER fuse box

4B1±12
DRIVE LINE CONTROL SYSTEM (SHIFT ON THE FLY)
Parts Location (LHD / Diesel Engine Model)
D08RW852
Legend
(1) I±12
(2) I±9
(3) H±7, H±8, H±24, H±25
(4) Fuse Box
(5) C±16
(6) C±94
(7) H±4, H±5(8) P±17
(9) P±18
(10) P±19
(11) H±60
(12) Relay & Fuse Box
(13) H±12, H±16
(14) E±21
(15) E±45

4B1±13 DRIVE LINE CONTROL SYSTEM (SHIFT ON THE FLY)
Parts Location (LHD / Gasoline Engine Model)
D08RW854
Legend
(1) I±12
(2) I±9
(3) H±7, H±8, H±24, H±25
(4) Fuse Box
(5) C±16
(6) C±94
(7) H±5
(8) M±11, M±12(9) M±22
(10) M±23
(11) M±24
(12) H±10
(13) M±26
(14) Relay & Fuse Box
(15) H±12, H±16
(16) E±30

4B1±14
DRIVE LINE CONTROL SYSTEM (SHIFT ON THE FLY)
Parts Location (RHD / Diesel Engine Model)
D08RW831
Legend
(1) I±9
(2) I±12
(3) E±45
(4) E±21
(5) H±7, H±9
(6) C±16
(7) C±94(8) H±4, H±5
(9) P±17
(10) P±18
(11) P±19
(12) H±60
(13) Relay & Fuse Box
(14) H±15, H±16, H±25, H±26, H±27
(15) Fuse Box

4B1±15 DRIVE LINE CONTROL SYSTEM (SHIFT ON THE FLY)
Parts Location (RHD / Gasoline Engine Model)
D08RW853
Legend
(1) I±9
(2) I±12
(3) H±7, H±9
(4) C±16
(5) H±5
(6) C±94
(7) M±26
(8) M±11, M±12(9) M±22
(10) M±23
(11) M±24
(12) H±10
(13) H±12
(14) Relay & Fuse Box
(15) E±30
(16) H±15, H±16, H±25, H±26, H±27
(17) Fuse Box

4B2±17 DRIVE LINE CONTROL SYSTEM (TOD)
Parts Location
D08RW621
Legend
(1) I±9
(2) B±13 or B±14
(3) H±12
(4) I±12
(5) A±3
(6) H±7, H±8
(7) H±32
(8) C±16
(9) H±5, H±6
(10) C±63
(11) H±49(12) M±22
(13) M±23
(14) M±24
(15) H±10
(16) E±5
(17) E±29
(18) H±42
(19) E±30
(20) Battery
(21) H±13, H±15, H±26
(22) Fuse Box
(23) B±67, B±68

5A±5 BRAKE CONTROL SYSTEM
FR
Front Right
GEN
Generator
MV
Millivolts
RL
Rear Left
RR
Rear RightRPS
Revolution per Second
VDC
Volts DC
VA C
Volts AC
W/L
Warning Light
WSS
Wheel Speed Sensor
General Diagnosis
General Information
ABS malfunction can be classified into two types, those
which can be detected by the ABS warning light and those
which can be detected as a vehicle abnormality by the
driver.
In either case, locate the fault in accordance with the
ªBASIC DIAGNOSTIC FLOWCHARTº and repair.
Please refer to Section 5C for the diagnosis of
mechanical troubles such as brake noise, brake judder
(brake pedal or vehicle vibration felt when braking),
uneven braking, and parking brake trouble.
ABS Service Precautions
Required Tools and Items:

Box Wrench

Brake Fluid

Special Tool
Some diagnosis procedures in this section require the
installation of a special tool.
J-39200 High Impedance Multimeter
When circuit measurements are requested, use a circuit
tester with high impedance.
Computer System Service Precautions
The Anti-lock Brake System interfaces directly with the
Electronic Hydraulic Control Unit (EHCU) which is a
control computer that is similar in some regards to the
Powertrain Control Module. These modules are designed
to withstand normal current draws associated with
vehicle operation. However, care must be taken to avoid
overloading any of the EHCU circuits. In testing for opens
or shorts, do not ground or apply voltage to any of the
circuits unless instructed to do so by the appropriate
diagnostic procedure. These circuits should only be
tested with a high impedance multimeter (J-39200) or
special tools as described in this section. Power should
never be removed or applied to any control module with
the ignition in the ªONº position.
Before removing or connecting battery cables, fuses or
connectors, always turn the ignition switch to the ªOFFº
position.
General Service Precautions
The following are general precautions which should be
observed when servicing and diagnosing the Anti-lock
Brake System and/or other vehicle systems. Failure toobserve these precautions may result in Anti-lock Brake
System damage.

If welding work is to be performed on the vehicle using
an electric arc welder, the EHCU and valve block
connectors should be disconnected before the
welding operation begins.

The EHCU and valve block connectors should never
be connected or disconnected with the ignition ªONº .

EHCU of the Anti-lock Brake System are not
separately serviceable and must be replaced as
assemblies. Do not disassemble any component
which is designated as non-serviceable in this
Section.

If only rear wheels are rotated using jacks or drum
tester, the system will diagnose a speed sensor
malfunction and the ªABSº warning light will
illuminate. But actually no trouble exists. After
inspection stop the engine once and re-start it, then
make sure that the ªABSº warning light does not
illuminate.
If the battery has been discharged
The engine may stall if the battery has been completely
discharged and the engine is started via jumper cables.
This is because the Anti-lock Brake System (ABS)
requires a large quantity of electricity. In this case, wait
until the battery is recharged, or set the ABS to a
non-operative state by removing the fuse for the ABS
(40A). After the battery has been recharged, stop the
engine and install the ABS fuse. Start the engine again,
and confirm that the ABS warning light does not light.
Note on Intermittents
As with virtually any electronic system, it is difficult to
identify an intermittent failure. In such a case duplicating
the system malfunction during a test drive or a good
description of vehicle behavior from the customer may be
helpful in locating a ªmost likelyº failed component or
circuit. The symptom diagnosis chart may also be useful
in isolating the failure. Most intermittent problems are
caused by faulty electrical connections or wiring. When
an intermittent failure is encountered, check suspect
circuits for:

Suspected harness damage.

Poor mating of connector halves or terminals not fully
seated in the connector body (backed out).

Improperly formed or damaged terminals.

5A±20
BRAKE CONTROL SYSTEM
Part Location (LHD model)
D08RW808
Legend
(1) F±2
(2) F±3
(3) H±33
(4) H±7, H±8, H±25
(5) H±46
(6) C±16
(7) C±63
(8) Fuse Box
(9) B±13 or B±14
(10) C±13
(11) H±5
(12) H±10, H±11(13) E±30
(14) C±41
(15) H±42
(16) C±85
(17) C±4 (EHCU)
(18) Relay & Fuse Box
(19) C±39
(20) H±12, H±13, H±15, H±16
(21) E±47, E±48, M±1
(22) E±42, E±43, M±8
(23) B±25
(24) I±10
(25) I±9

5A±34
BRAKE CONTROL SYSTEM
Part Location (RHD model)
D08RW623
Legend
(1) F±2
(2) F±3
(3) H±33
(4) H±7
(5) H±46
(6) C±16
(7) E±42, E±43, M±8
(8) E±47, E±48, M±1
(9) B±13 or B±14
(10) C±13
(11) H±4, H±5, H±6
(12) H±10, H±11
(13) E±4 (4JX1)(14) E±30 (4GJ2, 6VD1/6VE1)
(15) Fuse Box
(16) H±42
(17) C±41
(18) C±85
(19) C±4 (EHCU)
(20) Relay & Fuse Box
(21) C±39
(22) H±13, H±15, H±16, H±26, H±27
(23) I±10
(24) I±9
(25) H±12
(26) C±63
(27) B±25