2007 ISUZU KB P190 Workshop Repair Manual

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Page 5953 of 6020

ISUZU KB P190 2007 Workshop Repair Manual IMMOBILIZER SYSTEM (C24SE, 4JA1-T) 11A-55
B0055 EEPROM ERROR
Step Action Value(s) Yes No
1
W as the "Immobilizer System Check" performed? 
Go to Step 2 Go to Immobilizer
System Check
2

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ISUZU KB P190 2007 Workshop Repair Manual 11A-56 IMMOBILIZER SYSTEM (C24SE, 4JA1-T)
Special Tools

ILLUSTRATION PART NO.
PART NAME

5-8840-2835-0
(J-35616-C)
Connector Test Adapter Kit
(W ith Test Lamp)

Tech2

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ISUZU KB P190 2007 Workshop Repair Manual ANTITHEFT SYSTEM 11B-1
SECTION 11B
ANTITHEFT SYSTEM
TABLE OF CONTENTS

Service Precaution .................................................. 11B- 2
General Description .......................

ANTITHEFT SYSTEM 11B-1
SECTION 11B
ANTITHEFT SYSTEM
TABLE OF CONTENTS

Service Precaution .................................................. 11B- 2
General Description ................................................ 11B- 2
Diagrams And Schematics ................................. 11B- 5 System W iring Diagrams ................................ 11B- 5
Parts Location ................................................. 11B- 6
Circuit Diagram ..............................................11B-10
Antitheft control unit (A) ...................................11B-24
Pin-outs ...........................................................11B-24
Pin-Assignment ...............................................11B-25
lmportant information on Programming..............11B-26
Tech-2 Scan Tool ...............................................11B-27 Operating Procedure .......................................11B-27
Menu ...............................................................11B-28
DTC .................................................................11B-28
Clear DTC Information ....................................11B-28
Tech-2 Data Display........................................11B-28
Actuator Test ...................................................11B-28
Programming...................................................11B-30
Tech-2 Data List ..............................................11B-35
Diagnosis............................................................11B-36 Diagnostic procedure ......................................11B-36
Clearing Diagnostic Trouble Codes ................11B-36
Verifying Vehicle Repair ..................................11B-36
Diagnostic Aids................................................11B-36
Diagnostic Trouble Code (DTC) list
For Antitheft.....................................................11B-37
Antitheft System Check ...................................11B-38
No Antitheft Lamp ...........................................11B-39
DTC13 Security code not yet programmed .....11B-40
DTC14 No remote key programmed ...............11B-41
DTC16 Door lock actuators short circuit
to ground .........................................................11B-42
DTC20 Broken wire to door lock actuators .....11B-43
DTC21 Remote key 1 with random code
out of capture range ........................................11B-44
DTC22 Remote key 2 with random code
out of capture range ........................................11B-45
DTC23 Remote key 3 with random code
out of capture range ........................................11B-46

DTC24 Remote key 4 with random code
out of capture range ........................................ 11B-47
DTC25 Remote key 5 with random code
out of capture range ........................................ 11B-48
DTC28 Input immobilizer short circuit
to ground ......................................................... 11B-49
DTC29 Broken wire to immobilizer ................. 11B-50
DTC31 Actuator driver door defect ................. 11B-51
DTC32 Actuator passenger door defect ......... 11B-52
DTC36 Broken wire to driver door................... 11B-53
DTC37 Broken wire to passenger door........... 11B-54
DTC41 Driver door Lock switch unlock
defect .............................................................. 11B-55
DTC42 Driver door Lock switch lock defect .... 11B-56
DTC43 Driver door Lock switch Super lock
defect .............................................................. 11B-57
DTC44 Passenger door Lock switch lock
defect .............................................................. 11B-58
DTC45 Passenger door Lock switch unlock
defect .............................................................. 11B-59
DTC47 Battery voltage for door lock actuators
is missing ........................................................ 11B-60
DTC50 A/D converter defect or battery
voltage less than 9 volt.................................... 11B-61
DTC51 EEPROM defect ................................. 11B-62
DTC52 EEPROM not programmed
by ISUZU ......................................................... 11B-63
DTC55 Control unit defect............................... 11B-64
DTC123 Output flasher short circuit to ground
or broken wire ................................................. 11B-65
DTC125 Output alarm horn broken wire ......... 11B-66

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ISUZU KB P190 2007

Page 5956 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 11B-2 ANTITHEFT SYSTEM

Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU

11B-2 ANTITHEFT SYSTEM

Service Precaution
WARNING: THIS VEHICLE HAS 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 Antitheft system consists of the four major
components which are Antitheft Control Unit (ACU),
Antitheft horn, key (remote key), and scan tool (Tech-2).
This system can be activated by a correctly
programmed key (remote key) and starter switch is set
to OFF.
This system can be deactivated by a correctly
programmed key (remote key) connected with a
correctly programmed ACU and a correctly
programmed lCU.
W hen the vehicle doors, and engine hood are locked,
the antitheft alarm system is designed to protect your
vehicle and valuables from theft.
Any attempt to forcibly open any door, the engine hood
without using the vehicle key (or remote control) will
cause the hazard lights to flash on and off and the horn
to sound intermittently. This will continue for 30 seconds
(Hazard lamp flash; For 5 minutes) before the system
automatically shuts itself off.
Please operate the door either the key lock or remote
key after closing all doors to arm the alarm system.
Miss waning will be detected when the passenger door
is opened with locked condition and then this door is
closed.

During the first 10 seconds:
• LED lights up; Test, switch - on delay
• LED rapidly flashes (2Hz); Door, bonnet, open or
system fault

After approx. 10 seconds:
• LED slowly flashes; System on (0.5Hz)

RTU7Z0SH019101
Activating the anti-theft system
1. W hen the key switch is turned to the ACC position or
removed from the starter switch.
2. Closing and locking all the doors by the keylock o
r
remote key, and the engine hood will cause the
indicator light to come on.
3. Approximately 10 seconds later, the indicator light will slow flash. The anti-theft system is now in
operation.
Antitheft system alarm operating
conditions
W hen the antitheft system is engaged, the alarm will
operate under the following condition;

1. W henever some forcibly attempts to open a door, the engine hood without using the key.
2. W henever someone unlocks a door with door lock knob.
3. W henever the engine hood release handle is operated.

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ISUZU KB P190 2007

Page 5957 of 6020

ISUZU KB P190 2007 Workshop Repair Manual ANTITHEFT SYSTEM 11B-3
Function of a keyless entry system
W ith a keyless entry system the car can be locked or
unlocked from any position around the car up to a
specified distance, by using the

Page 5958 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 11B-4 ANTITHEFT SYSTEM
Transmitter (into remote key) power
The transmitted power is less than 10 m W .
Battery life time for transmitter power
The minimum life time of battery is 2 years with 15

11B-4 ANTITHEFT SYSTEM
Transmitter (into remote key) power
The transmitted power is less than 10 m W .
Battery life time for transmitter power
The minimum life time of battery is 2 years with 15
lock/unlock cycles per day.
W hile the battery is changed, the data retention will be
at least 3 minutes without pressing a button.
Super lock
(Mechanical anti-theft locking system)
To Lock:
All doors must be closed; press the lock button on the
remote control unit again within 10 seconds after
locking or turn key in driver's door lock towards rear of
vehicle again within 10 seconds after locking, then turn
it back to the vertical position and remove.
Lock buttons on all doors are positioned such that doors
cannot be opened.
To unlock:
Press unlock button on remote key or turn key in
driver's door lock towards front of vehicle, then turn it
back to the vertical position and remove. If the key is
used, antitheft alarm sound operate which continues
until ignition switch turn ON. If a problem is found, open
the driver door as necessary.

No proper transmitter is available, what
should be done for the system?
W hen any proper transmitter is not available, a new
transmitter should be programmed. Up to 5 transmitters
can be provided with a scan tool (Tech-2) and by proper
procedure.
In addition to the absence of proper transmitter, it may
happen particular secret code to the particular vehicle is
missing. ln this case, the secret code must be provided
by your organization.
Otherwise transmitter cannot be programmed in any
way.
lf the essential for a scan tool (Tech-2) for programming
and proper software for Tech-2 are not available, there
is no permanent way to fix system. Temporary replace
with new ACU, new ICU and new transmitter without
any secret code can make the system be deactivated,
but it does not last long. Such a replacement does not
solve any condition. Even after replacement, the system
is activated automatically in short time and then no
operation of the vehicle can be made in any way.
Tech-2 should be provided in your organization.

• Security code management
Your organization must keep security codes for all
vehicles as confidential data. Once the security codes
are lost, anybody who have the security code can
access antitheft system. Your organization has
responsibility of any missing vehicles caused by stolen
security code.

• Essential tool (Scan tool: Tech-2)
Your dealership must have Tech-2, and Tech-2 updated
software for immobilizer system.

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ISUZU KB P190 2007

Page 5959 of 6020

ISUZU KB P190 2007 Workshop Repair Manual ANTITHEFT SYSTEM 11B-5
Diagrams and Schematics
System Wiring Diagrams

RAW 4C0XF000101

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Page 5960 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 11B-6 ANTITHEFT SYSTEM
Parts Location (RHD) (1)

RTW 78AXF041301

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