ESP ISUZU TROOPER 1998 Service Owners Manual

8DÐ20 WIRING SYSTEM
Connector terminal numbers (10) are clearly shown.
Male side connector (9) terminal numbers are in
sequence from upper right to lower left.
Female side connector (8) terminal numbers are in
sequence from upper left to lower right.
NOTE:
1. For those connectors on which specific terminal
numbers or symbols are shown (such as PCM), the
terminal numbers or symbols are used in the circuit
diagram, irrespective of the above rule.
Refer to the following figure.2. The connectors used for relays have their own terminal
number assignment, irrespective of the above rule.
Refer to the following figure.
Double Lock Type Connector
Double lock type yellow color connectors are used for
supplemental restraint systemÐair bag circuit. When
removing the cable harness, disconnect the connector by
unlocking at two places, outside (1) and inside (2). In such
a case, do not pull the cables. Otherwise, cable
disconnection may occur.
When connecting the connector, insert the connector
completely and lock at outside. Imperfect locking may
cause malfunction of SRS system circuit.
1234
56781 2 3 4
5 6 7 8
10 8
9
C1C2C3C4C5C6C7C8C9C10C11C12C13C14C15C16D1D2D3D4D5D6D7D8D9D10D11D12D13D14D15D162
1
24
136 5
65
1423

8DÐ80 WIRING SYSTEM
Powertrain Control Module (PCM)
General Description
The Powertrain Control Module (PCM) is located in
the passenger compartment.
The PCM constantly monitors the information from
various sensors, and controls the systems that affect
vehicle performance.
The PCM performs the diagnostic function of the
system. It can recognize operational problems, alert
the driver through the Malfunction Indicator Light
(MIL) and store a Diagnostic Trouble Code (DTC) or
DTC(s) which identify the problem areas to aid the
technician in making repairs.
The PCM is designed to process the various input
informations and then sends the necessary
electrical responses to control fuel delivery, spark
timing and other emission control systems. The
input information has an interrelation to more than
one output, therefore, if the one input failed, it could
affect more than one system operation.
Refer to Driveability and Emission in Engine section
and Automatic Transmission in Transmission
section.

WIRING SYSTEM 8DÐ153
Headlight Leveling
General Description
The circuit consists of the headlight leveling SW and
headlight leveling actuators. The actuator is made
up of a motor, two relays and disk-type sensor. The
sensor rotates in accordance with the rotation of the
motor and stops the rotation of the motor at each
position corresponding to the levels 0 to 3.

WIRING SYSTEM 8DÐ237
Dome Light, Luggage Room Light,
Courtesy Light and Map Light
General Description
This circuit consists of the starter switch, door
switch, dome light, luggage room light, courtesy
light, map light, and alarm & relay control unit.
The dome light lights up when any one of doors
except the tailgate is opened with the switch set at
the door mode.
The courtesy lights for the front doors are controlled
by front door switchÐLH.
The luggage room light illuminates by opening the
tailgate when the switch is set at the door mode.
The map light illuminates by turning the switch on.
All these lights light up by turning on respective
switches regardless of the position of the starter
switch key.
The buzzer in the alarm & relay control unit sounds
to remind the driver to turn off the lights when the
starter switch is turned off.

8DÐ406 WIRING SYSTEM
ID Code Registration
There are four kinds of ID codes which can be registered,
for which these three modes, ID code new registration, ID
code additional registration and ID code check, are
available.
ID Code New Registration
This procedure erases all registered ID codes and
registers a new received ID code instead.
Step Action Yes No
1. Open the driverÕs side door.
2. Turn the starter switch off.
Is the action complete?
Turn the starter switch to ACC position and then off three times
within five seconds after step 1.
Is the action complete within five seconds?
Close the door and then open it two times within ten seconds after
step 2.
Is the action complete within ten seconds?
1. Turn the starter switch to ACC position and then off five times.
2. Close the door and then open it.
NOTE: This step must be performed within ten seconds after step
3.
Is the action complete?
The control unit makes lock/unlock response once with interval of
one second.
Is the response complete?
Operate the lock or unlock button of transmitter within twenty
seconds after step 5.
Is the action complete?
The control unit makes lock/unlock response once with interval of
one second as ID temporary registration.
Is the response complete?
Operate the lock or unlock button of transmitter within twenty
seconds after step 7.
Is the action complete?
The control unit compares temporary registered ID code with
receiving ID code.
Is temporary registered ID code the same as receiving ID code?
The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete?
The control unit erases all registered ID codes and registers new
ID code.
Is the registration complete? 1
2
3
4
5
6
7
8
9
10
11Go to Step 2
Go to Step 3
Go to Step 4
Go to Step 5
Go to Step 6
Go to Step 7
Go to Step 8
Go to Step 9
Go to Step 11
Finished
Go to Step 12Ñ
Finished
Finished
Finished
Ñ
Finished
Ñ
Finished
Go to Step 11
Ñ
Go to Step 13

WIRING SYSTEM 8DÐ407
Step Action Yes No
The control unit makes lock/unlock response once with interval of
one second.
Is the response complete?
The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete? 12
13Finished
FinishedÑ
Ñ
Step Action Yes No
1. Open the driverÕs side door.
2. Turn the starter switch off.
Is the action complete?
Turn the starter switch to ACC position and then off three times
within five seconds after step 1.
Is the action complete within five seconds?
Close the door and then open it two times within ten seconds after
step 2.
Is the action complete within ten seconds?
1. Turn the starter switch to ACC position and then off three
times.
2. Close the door and then open it.
NOTE: This step must be performed within ten seconds after step
3.
Is the action complete?
The control unit makes lock/unlock response two times with
interval of one second.
Is the response complete?
Operate the lock or unlock button of transmitter within twenty
seconds after step 5.
Is the action complete?
The control unit makes lock/unlock response two times with
interval of one second as ID temporary registration.
Is the response complete?
Operate the lock or unlock transmitter within twenty seconds after
step 7.
Is the action complete?
The control unit compares temporary registered ID code with
receiving ID code.
Is temporary registered ID code the same as receiving ID code?
The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete?
The control unit registers new ID code.
Is the registration complete? 1
2
3
4
5
6
7
8
9
10
11Go to Step 2
Go to Step 3
Go to Step 4
Go to Step 5
Go to Step 6
Go to Step 7
Go to Step 8
Go to Step 9
Go to Step 11
Finished
Go to Step 12Ñ
Finished
Finished
Finished
Ñ
Finished
Ñ
Finished
Go to Step 10
Ñ
Go to Step 13
ID Code Additional Registration
This procedure additionally registers a new received ID
code with holding registered ID codes. When total
number of registered ID codes and newly registered ID
code exceeds four, they are erased in order of older one.

8DÐ408 WIRING SYSTEM
Step Action Yes No
The control unit makes lock/unlock response once with interval of
one second.
Is the response complete?
The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete? 12
13Finished
FinishedÑ
Ñ
Step Action Yes No
1. Open the driverÕs side door.
2. Turn the starter switch off.
Is the action complete?
Turn the starter switch to ACC position and then off three times
within five seconds after step 1.
Is the action complete within five seconds?
Close the door and then open it two times within ten seconds after
step 2.
Is the action complete within ten seconds?
1. Turn the starter switch to ACC position and then off.
2. Close the door and then open it.
NOTE: This step must be performed within ten seconds after step
3.
Is the action complete?
The control unit makes lock/unlock response twice as many the
number of registered ID code with interval of two seconds. (In case
of no registered code, the response is made ten times.)
Is the response complete? 1
2
3
4
5Go to Step 2
Go to Step 3
Go to Step 4
Go to Step 5
FinishedÑ
Finished
Finished
Finished
Ñ
ID Code Check
This procedure checks how many kinds of ID code are
registered.
Step Action Yes No
Open the driverÕs side door.
Is the action complete?
Lock the door and then unlock it three times within ten seconds
after step 1.
Is the action complete within five seconds?
Close the door and then open it two times within ten seconds after
step 2.
Is the action complete within ten seconds? 1
2
3Go to Step 2
Go to Step 3
Go to Step 4Ñ
Finished
Finished AntiÐtheft horn, as an answer back function for the
transmitter operation, changes from available into
unavailing or from unavailing into available by this
procedure.
Answer Back (AntiÐtheft Horn Operation) Change Mode

WIRING SYSTEM 8DÐ409
Step Action Yes No
1. Lock the door and unlock it three times.
2. Close the door and then open it.
NOTE: This step must be performed within ten seconds after step
3.
Is the action complete?
Answer back mode changes.
Is this step complete?
The control unit makes lock/unlock response once with interval of
one second.
Is the response complete?
The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete? 4
5
6
7Go to Step 5
Go to Step 6
Finished
FinishedFinished
Go to Step 7
Ñ
Ñ
AntiÐtheft & Keyless Entry Control
Unit/Transmitter Replacement
AntiÐtheft & Keyless Entry Control Unit
Replacement
1. Remove and install the control unit.
cRefer to AntiÐtheft & Keyless Entry Control Unit
Removal and Installation in this section.
2. Register ID code.
cRefer to ID Code Registration in this section.
3. Check that the keyless entry system works normally.
Transmitter Replacement
1. Prepare a new transmitter.
2. Register ID code.
cRefer to ID Code Registration in this section.
3. Check that the keyless entry system works normally.
Transmitter Battery Replacement
1. Remove a screw to remove the cover.
2. Remove the batteries.
3. Set the new batteries into the transmitter.
4. Install the cover to the transmitter.
5. Check that the keyless entry system works normally.

8H±24SECURITY AND LOCKS
Keyless Entry System
ID Code Registration
There are four kinds of ID codes which can be registered,
for which these three modes, ID code new registration, ID
code additional registration and ID code check, are
available.
ID Code New Registration
This procedure erases all registered ID codes and
registers a new received ID code instead.
Step
ActionYe sNo
11. Open the driver's side door.
2. Turn the starter switch off.
Is the action complete?
Go to Step 2Ð
2Turn the starter switch to ACC position and then off three times
within five seconds after step 1.
Is the action complete within five seconds?
Go to Step 3Finished
3Close the door and then open it two times within ten seconds after
step 2.
Is the action complete within ten seconds?
Go to Step 4Finished
41. Turn the starter switch to ACC position and then off five times.
2. Close the door and then open it.
NOTE: This step must be performed within ten seconds after step
3.
Is the action complete?
Go to Step 5Finished
5The control unit makes lock/unlock response once with interval of
one second.
Is the response complete?
Go to Step 6Ð
6Operate the lock or unlock button of transmitter within twenty
senconds afer step 5.
Is the action complete?
Go to Step 7Finished
7The control unit makes lock/unlock response once with in terval of
one second as ID temprary registration.
Is the response complete?
Go to Step 8Ð
8Operate the lock or unlock button of transmitter within twenty
seconds after step 7.
Is the action complete?
Go to Step 9Finished
9The control unit compares temporary registered ID code with
receiving ID code
Is temporary registered ID code the same as receiving ID code?
Go to Step 10Go to Step 11
10The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete?
FinishedÐ
11The control unit erases all registered ID codes and registers new
ID code.
Is the registration complete?
Go to Step 12Go to Step 13

SECURITY AND LOCKS8H±25
StepNo Ye s Action
12The control unit makes lock/unlock response once with interval of
one second.
Is the response complete?
FinishedÐ
13The control unit makes lock/unlock response three times with
interval of one second.
Is the response complete?
FinishedÐ
ID Code Additional Registration
This procedure additionally registers a new received ID
code with holding registered ID codes. When total
number of registered ID codes and newly registered ID
code exceeds four, they are erased in order of older one.
Step
ActionYe sNo
11. Open the driver's side door.
2. Turn the starter switch off.
Is the action complete?
Go to Step 2Ð
2Turn the starter switch to ACC position and then off three times
within five seconds after step 1.
Is the action complete within five seconds?
Go to Step 3Finished
3Close the door and then open it two times within ten seconds after
step 2.
Is the action complete within ten seconds?
Go to Step 4Finished
41. Turn the starter switch to ACC position and then off three
times.
2. Close the door and then open it.
NOTE: This step must be performed within ten seconds after step
3.
Is the action complete?
Go to Step 5Finished
5The control unit makes lock/unlock response two times with
interval of one second.
Is the response complete?
Go to Step 6Ð
6Operate the lock or unlock button of transmitter within twenty
seconds afer step 5.
Is the action complete?
Go to Step 7Finished
7The control unit makes lock/unlock response two times with
interval of one second as ID temprary registration.
Is the response complete?
Go to Step 8Ð
8Operate the lock or unlock transmitter within twenty seconds after
step 7.
Is the action complete?
Go to Step 9Finished
9The control unit compares temporary registered ID code with
receiving ID code
Is temporary registered ID code the same as receiving ID code?
Go to Step 10Go to Step 11
10The control unit makes lock/unlock response with interval of one
second.
Is the response complete?
FinishedÐ
11The control unit registers new ID code.
Is the registration complete?
Go to Step 12Go to Step 13