2007 ISUZU KB P190 key

11A-10 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
Scan Tool Data List
The Immobilizer Scan Tool Data List contains all
immobilizer related parameters that are available on
the scan tool. Use the Immobilizer Scan Tool Data List
only after the following is determined:
• The Immobilizer Controls - Diagnostic System Check is completed. • On-board diagnostics are functioning properly.
A scan tool that displays faulty data should not be used.
Use of a faulty scan tool can result in misdiagnosis and
unnecessary parts replacement.
Only the parameters listed below are referenced in this
service manual for use in diagnosis.
Scan Tool Data Definitions
This information will assist in immobilizer problems.
Always perform the Diagnostic System Check -
Immobilizer Controls first. The Diagnostic System
Check will confirm proper system operation.
Ignition Status
This parameter displays the state of the ignition switch
input to the ICU. On indicates the ignition switch is
turned ON position.
Transponder Key
This parameter displays the state of the transponder
key in the steering lock. Transponder Key 1 to 5
indicates a correctly programmed transponder key is
used. The number 1 to 5 indicates which transponder
key is used. Invalid indicates an incorrect key is in
used. Not Programmed Key indicates a non-
programmed new transponder key is used. No
Transponder Key indicates ICU does not recognize a
transponder key. Transponder Status
This parameter displays the state of the transponder
key in the steering lock. Correct Transponder-Key
indicates a correctly programmed transponder key is
used. Wrong Transponder-Key indicates an incorrect
key is in used. New Transponder-Key indicates a non-
programmed new transponder key is used. No
Transponder Detected indicates ICU does not
recognize a transponder key.
Transponder-Key 1 to 5 Status
This parameter displays the state of number of
programmed transponder key(s). Programmed
indicates transponder key 1 to 5 is correctly
programmed. The number 1 to 5 indicates programmed
order.
Security Code Programmed
This parameter displays the state of the security code
programming. Yes indicates a security code is correctly
programmed. No indicates a security code is not
programmed.
Scan Tool Parameter Units DisplayedTypical Data Value
Operating Conditions: Ignition switch ON/ Two transponder keys programmed
Ignition Status On/ OffOn
Transponder Key Transponder Key 1 to 5/ Invalid/ Not
Programmed Key/ No Transponder Key Transponder Key 1 or 2
Transponder Status Correct Transponder-Key/ Wrong
Transponder-Key/ New Transponder- Key/ No Transponder Detected Correct Transponder-Key
Transponder-Key 1 Status Programmed/ Not Programmed Programmed
Transponder-Key 2 Status Programmed/ Not Programmed Programmed
Transponder-Key 3 Status Programmed/ Not Programmed Not Programmed
Transponder-Key 4 Status Programmed/ Not Programmed Not Programmed
Transponder-Key 5 Status Programmed/ Not Programmed Not Programmed
Security Code Programmed Yes/ NoYes
Security Wait Time Inactive/ Time (hour: minute: second) Inactive
While Security Lock Inactive/ Active Inactive

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ISUZU KB P190 2007

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-21
Diagnostic Trouble Code (DTC) List
DTCDTC Descriptor
B0001 Replace Electronic Control Unit (ECU)
B0002 Immobilizer Not Programmed
B0003 Transponder Key Problem
B0004 Immobilizer Coil Circuit
B0007 No Engine Request Received
B0008 Wrong Transponder Key
B0009 No Transponder Key Programmed
B0010 Unknown Transponder Key
B0012 Default Transponder Detected
B0013 Previously Erased Transponder
B0014 Secret Key Error
U0100 Lost Communication With ECM

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ISUZU KB P190 2007

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-23
DTC B0002
Description
The electrically erasable programmable read only
memory (EEPROM) memorizes immobilizer security
code and transponder key information. If the ICU
detects immobilizer security code is not programmed
into the ICU, this DTC will set.
Condition for Setting the DTC • The ICU detects that the security code is not programmed.
Action Taken When the DTC Sets • The engine will fail to run if the fault occurs before starting the engine. Condition for Clearing the DTC
• A current DTC clears once ignition cycle has occurred without the fault recurring.
• A history DTC will clear after 50 consecutive ignition cycles, if the condition for malfunction is no
longer present.
• Use a scan tool to clear the DTC.
Diagnostic Aids • Non-programmed ICU sets this DTC.
Circuit/ System Testing DTC B0002
Step Action Value(s)Yes No
1 Did you perform the Diagnostic System Check -
Immobilizer Controls? —
Go to Step 2 Go to Diagnostic
System Check - Immobilizer Controls
2 1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with a scan tool.
Does the DTC fail this ignition? —
Go to Step 3 Go to Diagnostic
Aids
3 Program immobilizer security information into the
ICU. Refer to Resetting and Programming
Guidelines in this section.
Did you complete the programming? —
Go to Step 4
—
41. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition.
Did the DTC fail this ignition? —
Go to Step 3 Go to Step 5
5 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK

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ISUZU KB P190 2007

11A-24 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
DTC B0003
Description
When the ignition switch is ON, the ICU begins
authentication of the transponder key in the steering
lock through the antenna coil. Once the ICU transmits a
signal, the transponder must send back a specific
response signal. If the ICU never receives a response
signal from the transponder, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ICU does not receive a response signal from the transponder key.
Action Taken When the DTC Sets • The engine will fail to run if the fault occurs before starting the engine. Condition for Clearing the DTC
• A current DTC clears once ignition cycle has occurred without the fault recurring.
• A history DTC will clear after 50 consecutive ignition cycles, if the condition for malfunction is no
longer present.
• Use a scan tool to clear the DTC.
Diagnostic Aids • Electromagnetic interference may affect intermittent condition.
• An antenna coil problem may set this DTC.
• Objects that block transponder key in the steering lock may set this DTC.
• Another key that is attached to the key ring may affect this DTC to set.
• If the ignition switch has been turned ON without transponder key this DTC sets.
Circuit/ System Testing DTC B0003
Step Action Value(s)Yes No
1 Did you perform the Diagnostic System Check -
Immobilizer Controls? —
Go to Step 2 Go to Diagnostic
System Check -
Immobilizer Controls
2 1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with a scan tool.
Is DTC B0004 also set? —
Go to DTC B0004 Go to Step 3
3 1. Inspect the transponder key(s) and the ICU for
the following conditions:
• Physical damage of transponder key(s) or ICU
• Improper installation of ICU
• Improper transponder key
• Objects such as key ring or metal that touch transponder key or antenna coil
• Objects such as key ring or metal that cover transponder key or antenna coil
2. Repair the condition(s) as necessary.
Did you find and correct the condition? —
Go to Step 8 Go to Step 4
4 Inspect all programmed transponder key while
observing the Transponder Key parameter with a
scan tool.
Is there a transponder key that indicates No
Transponder Key when ignition switch is ON? —
Go to Step 5 Go to Diagnostic
Aids
5 Does only specific transponder key indicate No
Transponder Key? —
Go to Step 6 Go to Step 7

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ISUZU KB P190 2007

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-25
6Important
: Replacement transponder key must be
programmed.
Replace the transponder key that indicates No
Transponder Key at Step 4. Refer to Resetting and
Programming Guidelines in this section.
Did you complete the replacement? —
Go to Step 8
—
7Important
: Replacement ICU must be
programmed.
Replace the ICU. Refer to ICU Replacement.
Did you complete the replacement? —
Go to Step 8
—
81. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition.
Did the DTC fail this ignition? —
Go to Step 2 Go to Step 9
9 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK
Step
Action Value(s)Yes No

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11A-26 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
DTC B0004
Circuit Description
An antenna coil is a part of the ICU and it is located
around steering key lock cylinder. An antenna coil is
energized when the ICU is performing an
authentication of the transponder key. If the ICU
detects an open circuit or short circuit on the antenna
coil circuit, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ICU detects an open circuit or short circuit on the antenna coil circuit. Action Taken When the DTC Sets
• The engine will fail to run if the fault occurs before starting the engine.
Condition for Clearing the DTC • A current DTC clears once ignition cycle has occurred without the fault recurring.
• A history DTC will clear after 50 consecutive ignition cycles, if the condition for malfunction is no
longer present.
• Use a scan tool to clear the DTC.
Diagnostic Aids • Improper installation of ICU will set this DTC.
Circuit/ System Testing DTC B0004
Step Action Value(s)Yes No
1 Did you perform the Diagnostic System Check -
Immobilizer Controls? —
Go to Step 2 Go to Diagnostic
System Check - Immobilizer Controls
2 1. Inspect the ICU for the following conditions:
• Physical damage of ICU
• Improper installation of ICU
2. Repair or replace as necessary.
Did you find and correct the condition? —
Go to Step 4 Go to Step 3
3 Important
: Replacement ICU must be
programmed.
Replace the ICU. Refer to ICU Replacement.
Did you complete the replacement? —
Go to Step 5
—
41. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition.
Did the DTC fail this ignition? —
Go to Step 2 Go to Step 5
5 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK

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ISUZU KB P190 2007

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-27
DTC B0007
Circuit Description
When the transponder key authentication is completed,
the ICU begins authentication of the ECM. The ECM
transmits a specific request signal to the ICU and the
ICU sends back a response signal to the ECM. Both
communication signals are carried out via a controller
area network (CAN) communication bus. If the ICU
does not detect a request signal from the ECM, this
DTC will set.
Condition for Setting the DTC • The ICU does not receive a request signal from the ECM.
Action Taken When the DTC Sets • The engine will fail to run if the fault occurs before starting the engine. Condition for Clearing the DTC
• A current DTC clears once ignition cycle has occurred without the fault recurring.
• A history DTC will clear after 50 consecutive ignition cycles, if the condition for malfunction is no
longer present.
• Use a scan tool to clear the DTC.
Diagnostic Aids • Electromagnetic interference may affect intermittent condition.
• If the ignition switch is cycled (ON > OFF > ON) rapidly, this DTC may set but engine starts. This is
normal and a current DTC clears once ignition
cycle has been normally occurred.
Circuit/ System Testing DTC B0007
Step Action Value(s)Yes No
1 Did you perform the Diagnostic System Check -
Immobilizer Controls? —
Go to Step 2 Go to Diagnostic
System Check - Immobilizer Controls
2 1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the Engine in the system selection menu.
5. Attempt to communicate with the ECM via the Engine Data table.
Does the scan tool communicate with the ECM? —
Go to Step 3 Go to Diagnostic
System Check -
Engine Controls
3 Monitor the ECM DTC Information with a scan tool.
Is DTC U0001 set? —Go to DTC U0001 in
Engine Control
Section Go to Step 4
4 Refer to Scan Tool Does Not Communicate with
The CAN Device in this section.
Did you complete the action? —
Go to Step 5
—
51. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition.
Did the DTC fail this ignition? —
Go to Step 2 Go to Step 6
6 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK

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ISUZU KB P190 2007

11A-28 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
DTC B0008
Description
When the ignition switch is ON, the ICU begins
authentication of the transponder key in the steering
lock through the antenna coil. Once the ICU transmits a
signal, the transponder must send back a specific
response signal. If the ICU receives a wrong response
signal from the transponder, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ICU receives a wrong response signal from the transponder key. Action Taken When the DTC Sets
• The engine will not start if the fault occurs before starting the engine.
Condition for Clearing the DTC • A current DTC clears once ignition cycle has occurred without the fault recurring.
• A history DTC will clear after 50 consecutive ignition cycles, if the condition for malfunction is no
longer present.
• Use a scan tool to clear the DTC.
Diagnostic Aids • If the transponder key or ICU is transferred (swapped) from another vehicle, this DTC will set.
Circuit/ System Testing DTC B0008
Step Action Value(s)Yes No
1 Did you perform the Diagnostic System Check -
Immobilizer Controls? —
Go to Step 2 Go to Diagnostic
System Check - Immobilizer Controls
2 1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with a scan tool.
Is DTC B0009 also set? —
Go to DTC B0009 Go to Step 3
3 Inspect all programmed transponder keys while
observing the Transponder Key parameter with a
scan tool.
Is there a transponder key that indicates Invalid
when ignition switch is ON? —
Go to Step 4 Go to Diagnostic
Aids
4 Does only specific transponder key indicate
Invalid? —
Go to Step 5 Go to Step 6
5 Important
: Replacement transponder key must be
programmed.
Replace the transponder key that indicates Invalid
at Step 3. Refer to Resetting and Programming
Guidelines in this section.
Did you complete the replacement? —
Go to Step 7
—
6Important
: Replacement ICU must be
programmed.
Replace the ICU. Refer to ICU Replacement.
Did you complete the replacement? —
Go to Step 7
—
71. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition.
Did the DTC fail this ignition? —
Go to Step 2 Go to Step 8
8 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK

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ISUZU KB P190 2007