start ISUZU KB P190 2007 Workshop Repair Manual

11A-32 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
DTC B0012
Description
When a transponder key is replaced or added,
transponder key information must be programmed into
the ICU. If the ICU detects a default transponder key,
this DTC set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ICU detects a non-programmed (new) 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.
Circuit/ System Testing DTC B0012
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 Step 4
3 Program transponder key 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

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-33
DTC B0013
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 response signal
that was previously erased transponder key, this DTC
will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ICU detects a previously erased 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 • This DTC is caused by a transponder key that was previously erased by some reason.
Circuit/ System Testing DTC B0013
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 transponder key 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-34 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
DTC B0014
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
receives a wrong request signal from the ECM, this
DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ICU detects a wrong 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 • Non-programmed ECM may set this DTC.
• If the ECM is transferred (swapped) from another vehicle, this DTC will set.
Circuit/ System Testing DTC B0014
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
ECM. 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

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-35
DTC U0100
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. The ICU
monitors CAN operational status by expecting a
constant flow of messages from the ECM. If the ICU
fails to send an expected message to the ECM, this
DTC will set.
Condition for Setting the DTC • The ICU detects that the CAN Bus OFF status. 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.
• Any communication fault with the ECM may set this DTC.
Circuit/ System Testing DTC U0100
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

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-39
Notice:Keep away another key, another transponder
key, key number plate or other metal items from the
transponder key that is going to program.
11. The on-screen displays a message "Program more Transponder Keys?" If all transponder key(s) has
been programmed, press No and go to next step. If
more transponder key(s) need to be programmed,
press Yes and repeat from previous step.
12. The on-screen displays a message "Program Transponder Keys Programming Completed
Successfully!" if all transponder key(s)
programming has been completed, then press
Confirm.
13. Turn OFF the ignition for 30 seconds.
14. Verify the engine starts using all programmed transponder key(s).
ICU Resetting Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Additional
Functions > Reset Immobilizer.
4. The on-screen displays a message "See Checking Procedure Before Programming!", then press
Confirm.
5. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions.
Notice: An incorrect security code input causes a
security wait time.
6. The on-screen displays a message "Warning Engine will not start after Reset!", then press
Confirm.
7. The on-screen displays a message "Reset Immobilizer Reset Completed Successfully!" if ICU
resetting has been completed, then press Confirm.
8. Turn OFF the ignition for 30 seconds.
9. Verify the engine fails to run using all transponder key(s).
ICU Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Program Immobilizer Function or Immobilizer
Link To ECM/ PIM.
4. In order to get a programming approval, the on- screen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure: a. Connect a scan tool to the terminal that
installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.
e. Highlight "Tech 2" on the Diagnostic Tool Selection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Program Immobilizer Function or Immobilizer
Link To ECM/ PIM.
8. The on-screen displays a message "See Checking Procedure Before Programming!", then press
Confirm.
9. Select "Immobilizer Installed" or select "Imoobilizer Replaced" Yes.
10. Select "PIM or ECM Replaced" No, if displayed.
11. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction may repeat
twice.
Notice: An incorrect security code input causes a
security wait time.
12. Input 17 digits of correct VIN that is based on stamped VIN or affixed VIN plate on this vehicle.
13. Operate the ignition switch by following the on- screen instructions.
Notice: Keep away another key, another transponder
key, key number plate or other metal items from the
transponder key that is going to program.
14. The on-screen displays a message "Program more Transponder Keys?" If all transponder key(s) has
been programmed, press No and go to next step. If
more transponder key(s) need to be programmed,
press Yes and repeat from previous step.
15. The on-screen displays a message "Programming Successfully!" if ICU and all transponder key(s)
programming has been completed, then press
Confirm.
16. Turn OFF the ignition for 30 seconds.
17. Verify the engine starts using all programmed transponder key(s).
ECM Resetting Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.

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ISUZU KB P190 2007

11A-40 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
3. Select Diagnostics > Appropriate vehicleidentification > Body > Immobilizer > Additional
Functions > Reset Engine Control Module. (4JK1/
4JJ1)
Select Diagnostics > Appropriate vehicle
identification > Engine > V6 Engine >
Programming > Reset ECU. (HFV6)
4. The on-screen may display a message "See Checking Procedure Before Programming!", then
press Confirm.
5. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions.
Notice: An incorrect security code input causes a
security wait time.
6. The on-screen displays a message "Warning! Engine will not start after Reset!", then press
Reset.
7. The on-screen displays a message "Reset Successfully!" if ECM resetting has been
completed, then press Confirm.
8. Turn OFF the ignition for 30 seconds.
9. Verify the engine fails to run using all transponder key(s).
ECM Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Program Immobilizer Function or Immobilizer
Link To ECM/ PIM.
4. In order to get a programming approval, the on- screen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:
a. Connect a scan tool to the terminal that installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.
e. Highlight "Tech 2" on the Diagnostic Tool Selection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Program Immobilizer Function or Immobilizer
Link To ECM/ PIM. 8. The on-screen may display a message "See
Checking Procedure Before Programming!", then
press Confirm.
9. Select "Imoobilizer Replaced" No and select "PIM or ECM Replaced" Yes, if displayed.
10. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction may repeat
twice.
Notice: An incorrect security code input causes a
security wait time.
11. Select "Engine Controller Installed" or select "ECM Replaced".
12. Operate the ignition switch by following the on- screen instructions.
13. The on-screen displays a message "Programming Successfully!" if ECM programming has been
completed, then press Confirm.
14. Turn OFF the ignition for 30 seconds.
15. Verify the engine starts using all transponder key(s).
PIM Resetting Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Powertrain Interface
Module > Security > Reset PIM.
4. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions.
Notice: An incorrect security code input causes a
security wait time.
5. The on-screen displays a message "Warning! Engine will not start after Reset!", then press
Reset.
6. The on-screen displays a message "Reset Completed Successfully!" if PIM resetting has
been completed, then press Confirm.
7. Turn OFF the ignition for 30 seconds.
PIM Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
4. In order to get a programming approval, the onscreen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:

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ISUZU KB P190 2007

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-41
a. Connect a scan tool to the terminal thatinstalled TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.
e. Highlight "Tech 2" on the Diagnostic Tool Selection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
8. Select "Immobilizer Replaced" No and select "PIM or ECM Replaced" Yes.
9. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction repeats
twice.
Notice: An incorrect security code input causes a
security wait time.
10. Select "PIM Replaced". 11. Operate the ignition switch by following the on- screen instructions.
12. The on-screen displays a message "Programming Successfully!" if PIM programming has been
completed, the press Confirm.
ICU & PIM Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
4. In order to get a programming approval, the onscreen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:
a. Connect a scan tool to the terminal that installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.
e. Highlight "Tech 2" on the Diagnostic Tool Selection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen. g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
8. Select "Immobilizer Replaced" Yes and select "PIM or ECM Replaced" Yes.
9. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction repeats
twice.
Notice: An incorrect security code input causes a
security wait time.
10. Select "PIM Replaced". 11. Input 17 digits of correct VIN that is based on stamped VIN or affixed VIN plate on this vehicle.
12. Operate the ignition switch by following the onscreen instructions.
Notice: Keep away another key, another transponder
key, key number plate or other metal items from the
transponder key that is going to program.
13. The on-screen displays a message "Program more Transponder Keys?" If all transponder key(s) has
been programmed, press No and go to next step. If
more transponder key(s) need to be programmed,
press Yes and repeat from previous step.
14. The on-screen displays a message "Programming Successfully!" if ICU, PIM and all transponder
key(s) programming has been completed, the
press Confirm.
15. Turn OFF the ignition for 30 seconds.
16. Verify the engine starts using all programmed transponder key(s).
ECM & PIM Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
4. In order to get a programming approval, the onscreen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:
a. Connect a scan tool to the terminal that installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.

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11A-42 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
e. Highlight "Tech 2" on the Diagnostic ToolSelection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
8. Select "Immobilizer Replaced" No and select "PIM or ECM Replaced" Yes.
9. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction repeats
twice.
Notice: An incorrect security code input causes a
security wait time.
10. Select "PIM and ECM Replaced". 11. Operate the ignition switch by following the on- screen instructions.
12. The on-screen displays a message "Programming Successfully!" if ECM and PIM programming has
been completed, the press Confirm.
ICU & ECM Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Program Immobilizer Function or Immobilizer
Link To ECM/ PIM.
4. In order to get a programming approval, the on- screen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:
a. Connect a scan tool to the terminal that installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.
e. Highlight "Tech 2" on the Diagnostic Tool Selection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF. 7. Select Diagnostics > Appropriate vehicle
identification > Body > Immobilizer > Programming
> Program Immobilizer Function or Immobilizer
Link To ECM/ PIM.
8. The on-screen may display a message "See Checking Procedure Before Programming!", then
press Confirm.
9. Select "Immobilizer and ECM Installed" or select "Immobilizer Replaced" Yes.
10. Select "PIM or ECM Replaced" Yes, if displayed. 11. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction repeats
twice.
Notice: An incorrect security code input causes a
security wait time.
12. Select "ECM Replaced" if displayed.
13. Input 17 digits of correct VIN that is based on stamped VIN or affixed VIN plate on this vehicle.
14. Operate the ignition switch by following the on- screen instructions.
Notice: Keep away another key, another transponder
key, key number plate or other metal items from the
transponder key that is going to program.
15. The on-screen displays a message "Program more Transponder Keys?" If all transponder key(s) has
been programmed, press No and go to next step. If
more transponder key(s) need to be programmed,
press Yes and repeat from previous step.
16. The on-screen displays a message "Programming Successfully!" if ICU, ECM and all transponder
key(s) programming has been completed, then
press Confirm.
17. Turn OFF the ignition for 30 seconds.
18. Verify the engine starts using all programmed transponder key(s).
ICU, ECM & PIM Programming Procedure
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
4. In order to get a programming approval, the onscreen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:
a. Connect a scan tool to the terminal that installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.

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IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-43
e. Highlight "Tech 2" on the Diagnostic ToolSelection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > Appropriate vehicle identification > Body > Immobilizer > Programming
> Immobilizer Link To ECM/ PIM.
8. Select "Immobilizer Replaced" Yes and select "PIM or ECM Replaced" Yes.
9. Input four digits of correct security code that belongs to this vehicle and follow the on-screen
instructions. The on-screen instruction repeats
twice.
Notice: An incorrect security code input causes a
security wait time.
10. Select "PIM and ECM Replaced". 11. Input 17 digits of correct VIN that is based on stamped VIN or affixed VIN plate on this vehicle.
12. Operate the ignition switch by following the onscreen instructions.
Notice: Keep away another key, another transponder
key, key number plate or other metal items from the
transponder key that is going to program.
13. The on-screen displays a message "Program more Transponder Keys?" If all transponder key(s) has
been programmed, press No and go to next step. If
more transponder key(s) need to be programmed,
press Yes and repeat from previous step.
14. The on-screen displays a message "Programming Successfully!" if ICU, ECM, PIM and all
transponder key(s) programming has been
completed, the press Confirm.
15. Turn OFF the ignition for 30 seconds.
16. Verify the engine starts using all programmed transponder key(s).

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ISUZU KB P190 2007

IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6) 11A-45
Description and Operation
Immobilizer System Description
Legend1. Transponder key
2. ICU
3. Controller area network (CAN) communication bus lines 4. Anti-theft control unit (with anti-theft system)
5. Engine control module (ECM) (4JK1/ 4JJ1)
6. Powertrain interface module (PIM)
7. Engine control module (ECM) (HFV6)

The immobilizer controls engine starting along with the
engine control module (ECM). The main system
components are the ICU, the ECM, the PIM (HFV6)
and the transponder key. The immobilizer system is
activated (immobilized) by an incorrectly programmed
or non-programmed transponder key, the ICU or the
ECM. While this system is activated, the ECM controls
the fuel injection system and starter cut relay in order to
fail to engine running. A typical engine starting
sequence is below.
1. When the ignition switch is ON, the ICU begins authentication of the transponder key in the
steering lock. The ICU transmits a specific request
signal to the transponder key and the transponder
key sends back a response signal to the ICU. Both
communication signals are carried out via antenna
coil.
2. Because the anti-theft system alarms if a key or other methods unlock the door, when the
transponder key is correctly authenticated the ICU
transmits an alarm cancel (disarm) signal to the
anti-theft control unit. (With anti-theft system)
3. After 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. 4. After the ECM authentication is completed, the
ECM enables engine running.
Immobilizer System Componenet
Description
Immobilizer Control Unit (ICU)
RTW7BASH000101

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