1998 ISUZU TROOPER anti-theft

WIRING SYSTEM 8DÐ405
TERMINAL
CONNECTIONCHECK
OPERATIONCIRCUIT
NO. ITEM CONDITION
1 FRT door switchÐLH, RH ContinuityOpen door Continuity
Close door No continuity
2 RR door switchÐLH, RH ContinuityOpen door Continuity
Close door No continuity
3Ñ Ñ Ð Ð
4 Door lock key switchÐLH, RH Continuity Lock with key Continuity
5 FRT door lock switchÐLH, RH Continuity Lock Continuity
6 Tailgate switch ContinuityOpen tailgate Continuity
Close tailgate No continuity
8 AntiÐtheft horn Voltage Ð Approx. 12V
10 Battery Voltage Ð Approx. 12V
11 Door switch ContinuityUnlock with locking knob Continuity
Lock with locking knob No continuity
12 Engine hood switch ContinuityOpen engine hood Continuity
Close engine hood No continuity
13 Detect switch ContinuityUnlock with key Continuity
Lock with key No continuity
14 Door lock key switch Continuity Unlock Continuity
15 FRT door lock switchÐLH, RH Continuity Unlock Continuity
16 Tamper switch Continuity Ð No continuity
17 Ground Continuity Ð Continuity
18 Starter switch Voltage Starter switch ÒACCÓ Approx. 12V
19 Indicator light Voltage Ð Approx. 12V
20 Dome light Voltage Dome light ÒDOORÓ position Approx. 12V
21 Anti-theft relay Voltage Ð Approx. 12V
22 Starter relay VoltageMode switch ÒPÓ or ÒNÓ Approx. 12V
Clutch pedal depressed Approx. 12V
Connector Check Table
Check the antiÐtheft & keyless entry control unit harness side connector BÐ20 by using a circuit tester.

SECURITY AND LOCKS8H±1
BODY AND ACCESSORIES
SECURITY AND LOCKS
CONTENTS
Service Precaution 8H±2. . . . . . . . . . . . . . . . . . . . . .
Front Door Lock Assembly 8H±2. . . . . . . . . . . . . . .
Front Door Lock Assembly and
Associated Parts 8H±2. . . . . . . . . . . . . . . . . . . . . .
Removal 8H±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Outside Handle and Door Lock Cylinder 8H±4
Front Outside Handle, Door Lock Cylinder
and Associated Parts 8H±4. . . . . . . . . . . . . . . . . .
Removal 8H±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Door Lock Assembly 8H±7. . . . . . . . . . . . . . . .
Rear Door Lock Assembly and Associated
Parts 8H±7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8H±7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Outside Handle 8H±9. . . . . . . . . . . . . . . . . . . .
Rear Outside Handle and Associated Parts 8H±9
Removal 8H±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Door Inside Lock Knob Link 8H±10. . . . . . . . . .
Removal 8H±10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Inside Lock Knob 8H±11. . . . . . . . . . . . . . . . . . .
Removal 8H±11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Inside Handle 8H±11. . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 8H±11. . . . . . . . . . . . . . .
Tailgate Lock Assembly (LH) 8H±12. . . . . . . . . . . . . .
Tailgate Lock Assembly (LH) and
Associated Parts 8H±12. . . . . . . . . . . . . . . . . . . . . .
Removal 8H±12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Lock Assembly (RH) 8H±14. . . . . . . . . . . . .
Tailgate Lock Assembly (RH) and
Associated Parts 8H±14. . . . . . . . . . . . . . . . . . . . . .
Removal 8H±14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Inside Lock Knob 8H±15. . . . . . . . . . . . . . . .
Removal 8H±15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 8H±15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Inside Handle 8H±16. . . . . . . . . . . . . . . . . . .
Parts Location 8H±16. . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 8H±16. . . . . . . . . . . . . . .
Tailgate Outside Handle and/or Tailgate
Lock Cylinder 8H±17. . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Outside Handle and/or Tailgate
Lock Cylinder and Associated Parts 8H±17. . . . .
Removal 8H±17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8H±18. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key 8H±19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Coding 8H±19. . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Styles 8H±19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Door Lock System 8H±20. . . . . . . . . . . . . . . .
General Description 8H±20. . . . . . . . . . . . . . . . . . . . . .
Front Door Lock Actuator Removal 8H±20. . . . . .
Front Door Lock Actuator Installation 8H±20. . . . .
Rear Door Lock Actuator Removal 8H±20. . . . . . .
Rear Door Lock Actuator Installation 8H±21. . . . .
Tailgate Lock Actuator Removal 8H±21. . . . . . . . .
Tailgate Lock Actuator Installation 8H±21. . . . . . .
Anti-theft System 8H±22. . . . . . . . . . . . . . . . . . . . . . . .
General Description 8H±22. . . . . . . . . . . . . . . . . . . . . .
Anti-theft & Keyless Entry Control Unit
Removal 8H±22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-theft & Keyless Entry Control Unit
Installation 8H±22. . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-theft Indicator Removal 8H±22. . . . . . . . . . . . .
Anti-theft Indicator Installation 8H±23. . . . . . . . . . .
Anti-theft Horn Removal 8H±23. . . . . . . . . . . . . . . .
Anti-Theft Horn Installation 8H±23. . . . . . . . . . . . . .
Engine Hood Switch Removal 8H±23. . . . . . . . . . .
Engine Hood Switch Installation 8H±23. . . . . . . . .
Keyless Entry System 8H±24. . . . . . . . . . . . . . . . . . . .
ID Code Registration 8H±24. . . . . . . . . . . . . . . . . . .
Answer Back (Anti±theft Horn Operation)
Change Mode 8H±26. . . . . . . . . . . . . . . . . . . . . . . .
Anti±theft & Keyless Entry Control
Unit/Transmitter Replacement 8H±27. . . . . . . . . .
Main Data and Specifications 8H±28. . . . . . . . . . . . .

8H±4SECURITY AND LOCKS
Front Outside Handle and Door Lock Cylinder
Front Outside Handle, Door Lock Cylinder and Associated Parts
632RS006
Legend
(1) Door Trim Panel
(2) Waterproof Sheet
(3) Outside Handle(4) Door Lock Cylinder
(5) Clip
(6) Key Switch (W/Anti-Theft)
Removal
1. Disconnect the battery ground cable.
2. Remove the door trim panel.
3. Remove the waterproof sheet.
Refer to the Window Regulator removal procedure in
Body Structure section.

SECURITY AND LOCKS8H±5
4. Disconnect the locking links (arrow marks positions)
and key switch connector (w/anti-theft) to remove the
outside handle.
632RS005
Legend
(1) Outside Handle
(2) To Door Lock Assembly
(3) Key Switch Connector (W/Anti±Theft)
5. Remove the key Switch.
632RS007
Legend
(1) Outside Handle
(2) Lock Cylinder
(3) Key Switch
6. Remove the fixing clip(1) to remove the door lock
cylinder(2).
632RS009
Installation
To install, follow the removal steps in the reverse order,
noting the following points.
1. Be sure to install the door lock cylinder(2) at a right
angle to the outside handle(1).
632RS008

8H±6SECURITY AND LOCKS
2. For the anti-theft system, be sure to install the push
rod(3) of key switch while pressing it to the door lock
cylinder(5) so that there is no continuity between the
key switch(4) side connector terminal No. D6±2 and
D6±4 (No. D16±2 and D16±4: passenger side).
632RS010
3. Tighten the outside handle and key switch fixing bolts
to the specified torque.
Torque: 9 N´m (0.9kg´m/78 lb in)
4. Check for smooth outside handle and lock cylinder
operation.

8H±18SECURITY AND LOCKS
5. Disconnect the locking links (arrow marks positions),
key switch connector (w/anti-theft) and remove three
fixing bolts to remove the tailgate outside handle.
683RW016
Legend
(1) To Actuator
(2) Key Switch Connector (W/Anti±Theft)
(3) To Lock Assembly
6. Remove the key switch fixing bolt(3) to remove the
key switch (w/anti-theft) (4) from the tailgate lock
cylinder (1).
And remove the tailgate lock cylinder fixing bolt(2) to
remove the tailgate lock cylinder.
683RS008
Installation
To install, follow the removal steps in the reverse order,
noting the following points.
1. For the anti-theft system, install the push rod(1) of the
key switch(3) to the key cylinder(2) while pressing it
so that there is not continuity between the key switch
side connector terminals No. G5±2 and G5±4 as
shown in the figure.
683RS009
2. Tighten the outside handle and key cylinder fixing
bolts to the specified torque.
Torque: 9 N´m (0.9kg´m/78 lb in)
3. Check that the outside handle and key cylinder
operate correctly after installing them.

8H±22SECURITY AND LOCKS
Anti-theft System
General Description
The circuit consists of the starter switch, anti-theft &
keyless entry control unit, anti-theft horn, front door and
tailgate key switch (detect and tamper switch), door lock
(& power window) switch, door lock actuator for each
door, engine hood switch, clutch start switch (M/T),
ANTI-THEFT indicator light and mode switch (A/T).
The system operates as follows: After locking the starter
switch and removing the starter key (this sets the alarm),
if the door is unlocked in any way other than with the
proper key, the headlights start flashing, the horn sounds,
and the starter circuit is disabled. (However, the engine
hood and all the doors must be locked and closed.)
Once the system has been placed in the warning or alarm
condition, it can be released only when the starter switch
is shifted from ªOFFº to ªACCº by the starter key, or when
the lock of the front door or the tailgate is released (to
activate the detect switch) by the starter key.
Anti-theft & Keyless Entry Control
Unit Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly.

Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly.

Refer to the Instrument Panel Assembly in Body
Structure section.
4. Disconnect the connector(2).
5. Remove four screws to remove the anti-theft &
keyless entry control unit with bracket(1).
825RW029
6. Remove two nuts from the anti-theft & keyless entry
control unit with bracket(3) to remove the anti-theft &
keyless entry controller(4).
825RW028
Anti-theft & Keyless Entry Control
Unit Installation
To install, follow the removal steps in the reverse order.
Anti-theft Indicator Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly(1).
Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly(2).
Refer to the Instrument Panel Assembly in Body
Structure section.
4. Remove the instrument panel driver lower cover
assembly(3).
Refer to the Instrument Panel Assembly in Body
Structure section.
821RW024

SECURITY AND LOCKS8H±23
5. Remove the instrument panel cluster assembly(4).
Refer to the Instrument Panel Assembly in Body
Structure section.
6. Remove two screws and then remove the anti-theft
indicator(5).
821RW032
Anti-theft Indicator Installation
To install, follow the removal steps in the reverse order.
Anti-theft Horn Removal
1. Disconnect the battery ground cable.
2. Disconnect the connector and remove the fixing bolt
to remove the anti-theft horn(1).
828RS007
Anti-Theft Horn Installation
To install, follow the removal steps in the reverse order.
Engine Hood Switch Removal
1. Disconnect the battery ground cable.
2. Remove the cap(1).
3. Remove the lock nut(2).
4. Disconnect the connector(4).
5. Remove the engine hood switch(3).
828RS011
Engine Hood Switch Installation
To install, follow the removal steps in the reverse order.