2007 ISUZU KB P190 IMMOBILISER

Powertrain Interface Module – V6 Page 6E1–49

9.11 DTC B3902 – Immobiliser Malfunction
DTC Descriptors
This diagnostic procedure supports DTC B3902 – Immobiliser Malfunction.
Circuit Description
The engine control module (ECM), the powertrain interface module (PIM) and the immobiliser control unit (ICU) are
integral parts of the vehicle immobiliser system. The immobiliser system authenticates the security code programmed
into each of these modules to prevent unauthorised vehicle operation. This authentication process includes the following
steps:
1 At predetermined situations, the ICU sends a security code to the PIM.
2 W hen the ignition is switched ON, the PIM receives and compares this security code from the ICU against the security code programmed into the PIM.
3 Once the PIM receives the correct security code from the ICU, it sends a security code to the ECM.
4 The ECM receives and compares this security code from the PIM against the security code programmed into the ECM.
5 The authentication process is complete once the ECM receives the correct security code from the PIM within the specified time frame.
6 The ECM allows normal vehicle operation.
NOTE
If any of these authentication processes fail, the
vehicle will not start and DTCs will set. For further
information on the immobiliser system, refer to
11A Immobiliser.
Conditions for Running the DTC
Conditions for running the DTC are:
• The ignition is switched on.
• The ignition voltage is 10.0 – 16.0 V.
Conditions for Setting the DTC
B3902
Ignition set to the ON position.
Conditions for Clearing the DTC
Refer to 4.1 Diagnostic General Descriptions for information on the conditions for clearing DTCs.
Additional Information
• Refer to 6C1-1 Engine Management –V6 – General Information for details of the ECM operation.
• Refer to 11A Immobiliser for immobiliser system information:
• Refer to 12.4 Immobiliser Link to ECM / PIM for immobiliser link to ECM / PIM.
• Since a fault condition in a wiring connector may trigger DTCs, always test the connectors related to this diagnostic
procedure for shorted terminals or poor wiring connection before replacing any component. Refer to 8A Electrical -
Body and Chassis for information on electrical fault diagnosis.
• For an intermittent fault condition, refer to Intermittent Fault Conditions in this section.

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–50

• To assist diagnosis, refer to 6 W iring Diagram and Connector Chart for the system wiring diagram and
connector charts in this section.
DTC B3902 Diagnostic Table
Step Action Yes No
1
Has the Diagnostic System Check been performed?
Go to Step 2 Refer to
7.2 Diagnostic System Check
2 Using Tech 2, perform the ICU ID check procedure.
Is the ID number displayed by Tech 2? Go to Step 3
Go to Step 5
3 1 Switch off the ignition for 30 seconds.
2 Operate the vehicle within the conditions for setting the DTC.
3 Using Tech 2, select the DTC display function.
Does DTC B3902 fail this ignition cycle? Go to Step 4 Refer to
Additional
Information in this Section
4 Test the Immobiliser system. Refer to 11A Immobiliser.
Has any fault been found and rectified? Go to Step 8 Go to Step 7
5 1 Test all ground circuits of the ICU for a high resistance or an
open circuit fault condition. Refer to 8A Electrical - Body and
Chassis for information on electrical fault diagnosis.
2 Test the ICU ignition supply voltage circuit for a high resistance, open circuit or short to ground fault condition. Refer to 8A
Electrical - Body and Chassis for information on electrical fault
diagnosis.
Has any fault been found and rectified? Go to Step 8 Go to Step 6
6 Replace the ICU. Refer to 11A Immobiliser.
W as the repair completed? Go to Step 8 —
7 Replace the PIM. Refer to 11.2 Powertrain Interface Module.
W as the repair completed? Go to Step 8 —
8 1 Using Tech 2, clear the DTCs.
2 Switch off the ignition for 30 seconds.
3 Start the engine.
4 Operate the vehicle within the conditions for running the DTC.
Do any of the immobiliser DTCs fail this ignition cycle? Go to Step 2 Go to Step 9
9
Using Tech 2, select the DTC display function.
Does Tech 2 display any DTCs? Go to the
appropriate DTC Table System OK
When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.
9.12 DTC P0318 – Vertical Acceleration
Sensor
DTC Description
This diagnostic procedure supports the Vertical Acceleration Sensor (VAS).
Circuit Description
The vertical acceleration sensor monitors vertical movement of the vehicle. The powertrain interface module (PIM)
converts the signal voltage input into serial data, which is used by.

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–55

Step Action Yes No
7
Test the VSS signal circuit and low reference circuit for a high
resistance, open circuit, short to ground, short to voltage or shorted
together fault condition. Refer to 8A Electrical - Body and Chassis for
information on electrical fault diagnosis.
W as any fault found and rectified? Go to Step 11 Go to Step 10
8
Repair the open or high resistance fault condition in the VSS ground
shield circuit. Refer to 8A Electrical - Body and Chassis for information
on electrical repair procedures.
W as the repair completed? Go to Step 11 —
9 Replace the VSS. Refer to 7B1_Manual Transmission.
W as the repair completed? Go to Step 11 —
10 Replace the PIM. Refer to 11.2 Powertrain Interface Module.
W as the repair completed? Go to Step 11 —
11 1 Using Tech 2, clear the DTCs.
2 Switch off the ignition for 30 seconds.
3 Start the engine.
4 Operate the vehicle within the conditions for running the DTC.
Does any of the VSS circuit DTCs fail this ignition cycle? Go to Step 2 Go to Step 12
12
Using Tech 2, select the DTC display function.
Does Tech 2 display any DTCs? Go to the
appropriate DTC
Table in this Section System OK
When all diagnosis and repairs are completed, check the system for correct operation.
9.14 DTC P0633 – Immobiliser Function Not
Programmed
DTC Descriptors
This diagnostic procedure supports DTC P0633 – Immobiliser Function Not Programmed.
Circuit Description
The engine control module (ECM), the powertrain interface module (PIM) and the immobiliser control unit (ICU) are
integral parts of the vehicle immobiliser system. The immobiliser system authenticates the security code programmed
into each of these modules to prevent unauthorised vehicle operation. This authentication process includes the following
steps:
1 At predetermined situations, the ICU sends a security code to the PIM.
2 W hen the ignition is switched ON, the PIM receives and compares this security code from the ICU against the security code programmed into the PIM.
3 Once the PIM receives the correct security code from the ICU, it sends a security code to the ECM.
4 The ECM receives and compares this security code from the PIM against the security code programmed into the ECM.
5 The authentication process is complete once the ECM receives the correct security code from the PIM within the specified time frame.
6 The ECM allows normal vehicle operation.

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–56

NOTE
If any of these authentication processes fail, the
vehicle will not start and DTCs will set. For further
information on the immobiliser system, refer to
11A Immobiliser.
Conditions for Running the DTC
Conditions for running the DTC are:
• The ignition is switched on.
• The ignition voltage is 10.0 – 16.0 V.
Conditions for Setting the DTC
P0633
An attempt is made to start the engine before the immobiliser function has been programmed into a new PIM.
Conditions for Clearing the DTC
Refer to 4.1 Diagnostic General Descriptions for information on the conditions for clearing DTCs.
Additional Information
• Refer to 6C1-1 Engine Management –V6 – General Information for details of the ECM operation.
• Refer to 11A Immobiliser for immobiliser system information:
• Refer to 12.4 Immobiliser Link to ECM / PIM for immobiliser link to ECM / PIM.
• Since a fault condition in a wiring connector may trigger DTCs, always test the connectors related to this diagnostic
procedure for shorted terminals or poor wiring connection before replacing any component. Refer to 8A Electrical -
Body and Chassis for information on electrical fault diagnosis.
• For an intermittent fault condition, refer to Intermittent Fault Conditions.
• To assist diagnosis, refer to 6 W iring Diagram and Connector Chart for the system wiring diagram and
connector charts.
DTC P0633 Diagnostic Table
Step Action Yes No
1
Has the Diagnostic System Check been performed?
Go to Step 2 Refer to
7.2 Diagnostic System Check
2 1 Switch off the ignition for 30 seconds.
2 Operate the vehicle within the conditions for setting the DTC.
3 Using Tech 2, select the DTC display function.
Does DTC P0513, P1629, P1632, P0633, P1677, P1678 or P1679 fail
this ignition cycle? Go to Step 3 Refer to
Additional
Information in this Section
3 Using Tech 2, perform the ICU Link to ECM / PIM procedure. Refer to
12.4 Immobiliser Link to ECM / PIM.
Has the linking procedure been performed correctly? Go to Step 7 Go to Step 4
4 Test the Immobiliser system. Refer to 11A Immobiliser.
Has any fault been found and rectified? Go to Step 7 Go to Step 5

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–57

Step Action Yes No
5
1 Test all ground circuits of the PIM for a high resistance or an
open circuit fault condition. Refer to 8A Electrical - Body and
Chassis for information on electrical fault diagnosis.
2 Test the PIM ignition supply voltage circuit for a high resistance, open circuit or short to ground fault condition. Refer to 8A
Electrical - Body and Chassis for information on electrical fault
diagnosis.
Has any fault been found and rectified? Go to Step 7 Go to Step 6
6 Replace the PIM. Refer to 11.2 Powertrain Interface Module.
Has the repair been completed? Go to Step 7 —
7 1 Using Tech 2, clear the DTCs.
2 Switch off the ignition for 30 seconds.
3 Start the engine.
4 Operate the vehicle within the conditions for running the DTC.
Do any of the immobiliser DTCs fail this ignition cycle? Go to Step 2 Go to Step 8
8
Using Tech 2, select the DTC display function.
Does Tech 2 display any DTCs? Go to the
appropriate DTC Table System OK
When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.
9.15 DTC P1611 – Wrong Security Code
Entered
DTC Description
This diagnostic procedure supports DTC P1611 – W rong Security Code Entered.
Circuit Description
Tech 2 is used to program the powertrain interface module (PIM). Before any programming, a security code must be
entered into Tech 2. The PIM will check if the code entered is correct before continuing. If the security code is incorrect,
DTC P1611 sets.
After an incorrect security code is entered, the PIM prevents any further attempts to enter a code until a predetermined
wait time elapses. There are several wait time stages, and for each stage, an incorrect security code may be entered
three times before the lockout time is escalated to the next stage. The lockout stages are as follows:
• Stage 1 wait time is 10 seconds.
• Stage 2 wait time is 10 seconds.
• Stage 3 wait time is 10 minutes.
• Stage 4 wait time is 20 minutes.
• Stage 5 wait time is 40 minutes.
• Stage 6 wait time is 80 minutes.
Additional Information
• Refer to 12.4 Immobiliser Link to ECM / PIM for PIM Security Code.
• Refer to 6 W iring Diagram and Connector for the following information:
• PIM connector illustration and terminal assignment, and
• PIM wiring diagram.

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–72

Remove
1 If replacing the PIM, reset the PIM prior to PIM removal. Refer to PIM Reset in this Section.
2 Turn the ignition switch off.
3 Remove Fuse EB-4, refer to 8A Electrical-Body and Chassis.
4 Remove the right-hand front body hinge pillar trim assembly, refer to 10 Cab.
5 Disconnect the wiring harness connector (1) from the powertrain interface module (PIM) (2).
6 Remove the bolt (3) attaching the PIM to the hinge pillar inner panel.

Figure 6E1 – 16
Reinstall
Reinstallation of the PIM is the reverse of the removal procedure, noting the following:
1 Tighten the attaching bolt to the correct torque specification.
PIM attaching bolt
torque specification ...................................8.0 – 12.0 Nm
2 If the PIM has been replaced, perform the following procedures: • PIM service programming, refer to 12.4 Immobiliser Link to ECM / PIM.
• PIM Configuration, refer to 12.3 PIM Configuration.
• Diagnostic system check, refer to 7.2 Diagnostic System Check.
3 Road test the vehicle and check for correct vehicle operation.

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ISUZU KB P190 2007

Powertrain Interface Module – V6 Page 6E1–75

NOTE
The Tech 2 PIM Security Information Data List
typical display values are obtained from a
correctly operating vehicle under the following
conditions:
• ignition switched on,
• engine not running, and
• vehicle is stationary.
Tech 2 Parameter Units Displayed Typical Display Values
ICU / PIM Status Yes / No Yes
Security Code Programmed Yes / No Yes
Security W ait Time Inactive / Active Inactive
Security W ait Time Inactive / 0:00:00 Inactive
Security Code Correct Enter Yes / No Yes
Security Code Reset Counter 0 0
12.2 PIM Reset Procedure

Do not perform the reset procedure within
sixty seconds of turning the ignition switch
on. Failure to comply may result in the PIM
failing to reset.
W hen a PIM has been installed into a vehicle, it is security linked to the immobiliser control unit (ICU) and engine control
module (ECM). Once this linking has been performed, the PIM cannot be installed in any other vehicle, unless the
security linking between the ICU and the ECM has been reset using the following procedure:
1 Prior to resetting the PIM, obtain the Security Code. For further information, refer to 12.1 Security and Programming Information.
2 Connect Tech 2 to the data link connector (DLC) and turn the ignition switch on.
3 On Tech 2 select: Body / Powertrain Interface Module / Security / Reset PIM .
NOTE
When Tech 2 requests programming approval,
obtain TIS approval.
NOTE
If a Tech 2 screen displaying Security Wait Time
Active, Please Wait! appears after selecting the
Reset PIM option, an incorrect security code has
been previously entered. Refer to 12.1
Security and Programming Information for further
information.
4 W hen Tech 2 displays Enter Security Code, enter the security code, press the Enter key and then the Okay soft
key.

The engine will not start after the PIM has
been reset.
5 W hen Tech 2 displays Do you really want to Reset? , press the Reset soft key.

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Powertrain Interface Module – V6 Page 6E1–77


Do not turn the ignition switch off within 60
seconds of programming the VIN. Failure to
comply may result in the changes failing to be
programmed into the PIM.
5 W hen notified that the programming was successful, press the Confirm soft key to return to the Tech 2 Program
screen.
12.4 Immobiliser Link to ECM / PIM

Do not perform the Immobiliser Link to ECM /
PIM procedure within sixty seconds of turning
the ignition switch on. Failure to comply may
result in the PIM failing to link.
W hen the powertrain interface module (PIM) has been replaced, it is necessary to security link the PIM to the immobiliser
control unit (ICU) and engine control module (ECM) before the vehicle will start.
NOTE
This linking procedure between the ECM and PIM
is also known as the Immobiliser Function
Programming.
1 Prior to performing the linking procedure, obtain the security code. For further information, refer to 12.1Security and Programming Information.
2 Connect Tech 2 to the data link connector (DLC).
3 On Tech 2 select: Body / Powertrain Interface Module / Security / Immobiliser Link to ECM / PIM .
4 W hen Tech 2 displays Immobiliser Replaced, press the No soft key.
5 W hen Tech 2 displays PIM or ECM Replaced?, press the Yes soft key.
NOTE
When Tech 2 requests programming approval,
obtain TIS approval.
6 W hen Tech 2 displays Enter Security Code, enter the security code and press the Enter key and then the Okay
soft key.
7 W hen Tech 2 displays Confirm Security Code, re-enter the security code, press the Enter key and then the Okay
soft key.
8 W hen Tech 2 displays Select Immobiliser Programming Routine , use the up or down arrow selection keys, to
select the PIM Replaced option and press the Enter key.
9 W hen Tech 2 displays Stop Engine – Turn Off Ignition , turn the ignition switch off and press the Confirm soft key.
10 W hen Tech 2 displays Turn Ignition On, turn the ignition switch on and press the Confirm soft key.

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