Circuit ISUZU KB P190 2007 Workshop Repair Manual
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Page 3714 of 6020
Powertrain Interface Module – V6 Page 6E1–53
9.13 DTC P0500, P0502 or P0503 – Vehicle
Speed Sensor Signal Malfunction
DTC Descriptors
This diagnostic procedure supports the following DTC’s:
• DTC P0500 – Vehicle speed sensor open circuit, short circuit to battery voltage, short circuit to ground, or
undefined error
• DTC P0502 – Vehicle speed sensor sensor low voltage
• DTC P0503 – Vehicle speed sensor intermittant fault
Circuit Description
The PIM applies the ground to the vehicle speed sensor (VSS) low reference circuit.
The VSS in conjunction with the 40X reluctor wheel generates an AC signal voltage. The amplitude and frequency of the
signal generated is proportional to the vehicle speed. The PIM uses this signal from the VSS signal circuit to determine
the vehicle speed.
A VSS DTC sets if the PIM detects a fault condition in the VSS signal circuit.
Conditions for Running the DTC
DTC P0500
Runs continuously once the following condition is met:
• The ignition is on and the vehicle is stationary.
DTC P0502
Runs continuously once the following condition is met:
• The first time the ignition is on and the vehicle starts to move from the stationary position.
DTC P0503
Runs continuously once the following condition is met:
• The ignition is on and the vehicle is mobile.
Conditions for Setting the DTC
DTC P0500
W hen the PIM reads back the 15 consecutive readings within 0.5 seconds.
DTC P0502
If the reading is >9.1 Km/Hr the DTC will be set.
DTC P0503
The DTC will set when the sensor detects an occurance of 15 times within 0.5 seconds.
Conditions for Clearing DTC
The DTC’s will clear on the next ignition cycle.
Additional Information
• Refer to 7B1_Manual Transmission.
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Page 3715 of 6020
Powertrain Interface Module – V6 Page 6E1–54
• For an intermittent fault condition, refer to Intermittent Fault Conditions in this Section.
• The VSS in conjunction with the 40X reluctor wheel generates an AC signal voltage. The amplitude and frequency
of the signal generated is proportional to the vehicle speed. The PIM uses this signal from the VSS signal circuit to
determine the vehicle speed.
• Since 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.
• To assist diagnosis, refer to 6 W iring Diagram and Connector Chart in this Section, for the system wiring diagram
and connector charts.
Test Description
The following numbers refer to the step numbers in the diagnostic table:
3 The PIM supplies 2.5 V to signal circuit of the VSS circuit to reduce the Electro Magnetic interference (EMI). If the voltage is not within range, this indicates there is an PIM fault or a PIM circuit fault condition.
4 The PIM supplies 2.5 V to low reference circuit of the VSS circuit to reduce the Electro Magnetic interference (EMI). If the voltage is not within range, this indicates there is a PIM fault or a PIM circuit fault condition.
DTC P0335 to P0338 Diagnostic Table
Step Action Yes No
1
Has the Diagnostic System Check been performed?
Go to Step 2 Refer to additional
information
2 1 Switch off the ignition for 30 seconds.
2 Start the engine.
3 Using Tech 2, select the DTC display function.
Does DTC P0500, P0502, P0503 fail this ignition cycle? Go to Step 3 Refer to
Additional
Information in this DTC
3 1 Disconnect the VSS connector.
2 Switch on the ignition with the engine not running.
3 Using a digital multimeter, measure the voltage between the signal circuit of the sensor connector and a good ground.
Does the multimeter display 2 – 3 V? Go to Step 4 Go to Step 7
4 Using a digital multimeter, measure the voltage between the VSS low
reference circuit and a good ground.
Does the multimeter display 2 – 3 V? Go to Step 5 Go to Step 7
5 Using a digital multimeter, measure the resistance between the
ground shield circuit of the VSS at the PIM connector and the PIM
housing.
Does the multimeter display approximately 5 Ω? Go to Step 6 Go to Step 7
6
Perform the following VSS inspection:
• Inspect the sensor wiring harness for conditions that may induce
electromagnetic interference. Refer to Intermittent Fault
Conditions in this Section.
• Inspect the sensor for incorrect sensor installation or incorrect
attaching bolt torque value. Refer to 7B1_Manual Transmission.
W as any fault found and rectified? Go to Step 11 Go to Step 9
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Page 3716 of 6020
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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Page 3718 of 6020
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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Page 3719 of 6020
Powertrain Interface Module – V6 Page 6E1–58
• For intermittent fault conditions, refer to Intermittent Fault Conditions.
• Since fault conditions 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.
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
An incorrect security code is entered into Tech 2 when attempting to program the PIM.
Action Taken When the DTC Sets
W hen the DTC sets, the following action is taken:
• The vehicle will not start whilst the PIM is in a lock-out state.
NOTE
When the DTC sets, there is no warning lamp
displayed on the instrument cluster.
Conditions for Clearing the DTC
Refer to 4.1 Diagnostic General Descriptions for information on the conditions for clearing DTCs.
Test Description
The following number refers to the step numbers in the diagnostic table:
4 This step tests the PIM ground circuits and supply voltage.
DTC P1611 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 Using Tech 2, select the DTC display function.
NOTE
Do not attempt to perform any Tech 2 function that
requires the PIM security code to be entered.
Does DTC P1611 fail this ignition cycle? Go to Step 5 Go to Step 3
3 Using Tech 2, attempt a programming function that requires the PIM
security code to be entered. Refer to 12 PIM Security and
Programming.
Has the programming function been successfully performed? System OK Go to Step 4
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Page 3720 of 6020
Powertrain Interface Module – V6 Page 6E1–59
Step Action Yes No
4
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 6 Go to Step 5
5 Replace the PIM. Refer to 11.2 Powertrain Interface Module.
Has the repair been completed? Go to Step 6 —
6 1 Using Tech 2, clear the DTCs.
2 Switch off the ignition for 30 seconds.
Does DTC P1611 fail this ignition cycle? Go to Step 2 Go to Step 7
7 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.
9.16 DTC B0981 – 3rd Start Switch Signal
Malfunction
DTC Description
This diagnostic procedure supports DTC B0981 – 3rd Start Switch Signal Malfunction.
Circuit Description
The 3rd start mode switch is a normally open switch that closes when the switch is activated. W hen activated, the switch
supplies signal ground to the 3rd start ground signal circuit. The powertrain interface module (PIM) converts the signal
ground input into serial data, which is used by the automatic transmission control module (TCM) to enable or disable the
3
rd start mode, and by the instrument cluster to display power mode status.
Additional Information
• For the 4L60E automatic transmission, refer to 7C1 Automatic Transmission – 4L60E – General Information:
• Power mode switch description, operation and inspection procedure, and
• TCM wiring diagram.
• Refer to 6 W iring Diagram and Connector for the following information:
• PIM connector illustration and terminal assignment, and
• PIM wiring diagram.
• For intermittent fault conditions, refer to Intermittent Fault Conditions.
• Since fault conditions 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.
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.
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Page 3721 of 6020
Powertrain Interface Module – V6 Page 6E1–60
Conditions for Setting the DTC
The PIM detects the power mode switch is activated for 120 seconds or more.
Action Taken When the DTC Sets
W hen the DTC sets, there is no warning lamp displayed on the instrument cluster.
Conditions for Clearing the DTC
Refer to 4.1 Diagnostic General Descriptions for information on the conditions for clearing DTCs.
Test Description
The following numbers refer to the step numbers in the diagnostic table:
2 This step tests the power mode switch using Tech 2.
6 This step tests the power mode switch signal circuit.
DTC B0980 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, view the power mode switch status parameter in the
PIM data list.
Does Tech 2 display Power?
Go to Step 4 Go to Step 3
3
1 Switch off the ignition for 10 seconds.
2 Operate the vehicle within the conditions for setting DTC B0980.
3 Using Tech 2, select the DTC display function.
Does DTC B0980 fail this ignition cycle? Go to Step 4 Refer to
Additional
Information in this
Section
4 1 Disconnect connector S22 – X1 from the power mode switch.
2 Using Tech 2, view the power mode switch status parameter in the PIM data list.
Does Tech 2 display Power?
Go to Step 6 Go to Step 5
5
Replace the power mode switch. Refer to 10 Cab.
Has the repair been completed? Go to Step 8 —
6 Test the power mode switch ground signal circuit for a short to ground.
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 7
7
Replace the PIM. Refer to 11.2 Powertrain Interface Module.
Has the repair been 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.
Does DTC B0980 fail this ignition cycle? Go to Step 2 Go to Step 9
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Page 3723 of 6020
Powertrain Interface Module – V6 Page 6E1–62
10 Diagnostics For Non DTC Faults
10.1 PRND32L Display Diagnostics
Circuit Description
The powertrain interface module (PIM) receives transmission gear status via the GM Lan serial data bus from the
transmission control module (TCM) it is then sent to the instrument cluster by the PIM via a series of hard wired
connections to illuminate the appropriate gear position indicator within the instrument cluster. Some of these components
do not set a DTC, in the event of a component failure. The following diagnostic procedures are devised to assist in these
cases.
Additional Information
• Refer to 7.2 Diagnostic System Check to monitor DTC’s.
• Refer to 8A Electrical Body and Chassis for the following information:
• Automatic transmission Neutral Start and Back-up Lamp Switch and wiring,
• TCM wiring diagram.
• Refer to 6 W iring Diagram and Connector Chart for the following information:
• PIM connector illustration and terminal assignment, and
• PIM wiring diagram.
• For intermittent faults, refer to Intermittent Fault Conditions.
• Check for an intermittent fault in the wiring harness or connectors, if a fault cannot be found the system is
serviceable.
Since fault conditions 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.
Test Description
The following numbers refer to the step numbers in the diagnostic table:
1 This step tests for DTC’s in the overall system.
2 This step manually tests the PRND32L display.
4 This step uses Tech 2 to drive each indicator on.
7 This step tests for shorts to voltage.
8 This step tests neutral start and back-up lamp switch and automatic transmission.
12 This step tests the instrument cluster circuits.
15 This step manually tests the PRND32L display.
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Powertrain Interface Module – V6 Page 6E1–63
PRND32L Display Diagnostic Table
Step Action Yes No
1
Has the Diagnostic System Check been performed?
Go to Step 2 Refer to
Diagnostic
System Check in this section
2 1 Turn the ignition to the ON position.
2 Move the gear select lever through each gear position and check the instrument cluster PRND32L display.
Does each indicator display an off to on condition? Refer to Additional
Information in this section Go to Step 3
3
Are any of the indicators permanently illuminated? Go to Step 5 Go to Step 4
4 1 Using Tech 2 select,
Body / PIM / Miscellaneous Tests / Status Indicators /
PRNDL Lamps.
2 Using the Tech 2 soft keys step through the sequence of illuminating each PRND32L indicator in turn.
Does each indicator display an off to on condition? Go to Step 8 Go to Step 10
5
Disconnect the TCM harness connector. Refer to 7C4 Automatic
Transmission – 4L60E – On-vehicle Servicing.
Is the indicator in Step 3 still permanently illuminated? Go to Step 6 Go to Step 8
6 Disconnect the PIM harness connector. Refer to 11.2 Powertrain
Interface Module in this Section.
Is the indicator in Step 3 still permanently illuminated? Go to Step 7 Go to Step 14
7
Turn the ignition to the ON position, test for a short to voltage of the
relevant circuits from the PIM to the instrument cluster. Refer to 6
W iring Diagram and Connector Chart.
W as any fault found and rectified? Go to step 15 Go to step 12
8
Check the neutral start and back-up lamp switch and automatic
transmission for correct operation. Refer to 7C2 Automatic
Transmission – 4L60E – Electrical Diagnosis.
W as any fault found and rectified? Go to Step 15 Go to 9
9 Replace the TCM. Refer to 7C4 Automatic Transmission – 4L60E –
On-vehicle Servicing.
Has the repair been completed? Go to Step 15 —
10 1 Disconnect the instrument cluster harness connector.
2 Turn the ignition to the ON position.
3 W hile sequencing each PRND32L indicator, back probe the relevant connector pins at the rear of the instrument cluster.
Refer to 6 W iring Diagram and Connector Chart.
Does the multimeter display a change from 0 to 10 Volts as each
PRND32L indicator position is selected? Go to Step 12 Go to 11
11 Test for high resistance, open circuit, a short to ground of the relevant
circuits from the PIM to the instrument cluster. Refer to 6 W iring
Diagram and Connector Chart.
W as any fault found and rectified? Go to Step 15 Go to Step 14
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Page 3725 of 6020
Powertrain Interface Module – V6 Page 6E1–64
Step Action Yes No
12
Test the following instrument cluster circuits for a high resistance,
open circuit or short to ground fault condition:
• all 12 V battery supply circuits
• all instrument cluster ground connections
W as any fault found and rectified? Go to Step 15 Go to Step 13
13 Replace the instrument cluster.
Has the repair been completed? Go to Step 15 —
14 Replace the PIM.
Has the repair been completed? Go to step 15 —
15 1 Turn the ignition to the ON position.
2 Move the gear select lever through each gear position and check the PRND32L display.
Does each indicator display an off to on condition? System OK Go to step 2
When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.
10.2 Warning Signal and Status Indicators Diagnostics
Circuit Description
The powertrain interface module (PIM) is connected to the instrument cluster by a series of hard wired connections to
illuminate the appropriate warnings and indicators within the instrument cluster. Some of these components do not set a
DTC, in the event of a component failure. The following diagnostic procedures are devised to assist in these cases.
Additional Information
• Refer to 7.2 Diagnostic System Check to monitor DTC’s.
• Refer to 8A Electrical Body and Chassis for the following information:
• Automatic transmission PRND32L switch and wiring,
• TCM wiring diagram.
• Refer to 6 W iring Diagram and Connector Chart for the following information:
• PIM connector illustration and terminal assignment, and
• PIM wiring diagram.
• For intermittent faults, refer to Intermittent Fault Conditions.
• Check for an intermittent fault in the wiring harness or connectors, if a fault cannot be found the system is
serviceable.
Test Description
The following numbers refer to the step numbers in the diagnostic table:
1 This step tests for DTC’s in the overall system.
2 This step manually tests the warning indicators.
5 This step uses Tech 2 to drive each status indicator on.
6 This step uses Tech 2 to drive each warning indicator on.
9 This step tests the wiring harness between the PIM and the Instrument Cluster.
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