2007 ISUZU KB P190 torque

Engine Management – V6 – Service Operations Page 6C1-3–24


Clean the area around the engine oil pressure
sensor before removal to avoid debris from
entering the engine.
2 Disconnect the wiring harness connector (1) from the engine oil pressure sensor. NOTE
A small amount of oil will drain from the oil filter
housing when the engine oil pressure sensor is
removed. Use a shop towel to absorb the oil.
3 Using special tool J 41712 or a 11/16" deep socket and socket bar, remove the engine oil pressure
sensor (1).
Figure 6C1-3 – 22
Reinstall
Reinstallation of the engine oil pressure sensor is the reverse of the removal procedure, noting the following:
1 Tighten the engine oil pressure sensor to the correct torque specification.
Engine oil pressure sensor
torque specification .................................12.0 – 14.0 Nm
2 Check the engine oil level and top up if necessary, refer to 6A1 Engine Mechanical – V6.
2.11 Evaporative Emission (EVAP) Canister Purge Valve Quick Connect Fittings
Disconnect

Clean the area around the evaporative
emission (EVAP) canister purge valve before
disconnecting the quick connect fitting to
avoid debris from entering EVAP canister
purge valve.

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Engine Management – V6 – Service Operations Page 6C1-3–33

Reinstall
Reinstallation of the fuel injector wiring harness assembly is the reverse of the removal procedure, noting the following:

Ensure there is no undue strain placed on the
fuel injector wiring harness (1) once it has
been positioned in the tray (2).
1 Lay the fuel injector wiring harness in the lower tray.
2 Clip the upper and lower fuel injector harness trays together, ensuring that all eight retainers are correctly
seated.
Figure 6C1-3 – 41
Reinstall
Reinstallation of the fuel rail assembly is the reverse of the removal procedure, noting the following:
1 Lubricate the fuel injector O-rings with engine oil.
2 Carefully reinstall the fuel rail and injector assembly.

Ensure the fuel injectors are correctly seated
in the lower intake manifold, and the fuel rail
attaching brackets are correctly located prior
to tightening the attaching bolts.
3 Reinstall the fuel rail attaching bolts and tighten to the correct torque specification. Fuel rail attaching bolt
torque specification ..................................8.0 – 12.0 Nm
4 Reconnect the fuel feed hose to the fuel rail, refer to 6C Fuel System - V6.
5 Inspect the fuel rail and quick connect fitting for leaks, refer to 6C Fuel System - V6.
6 Road test the vehicle and check for correct operation.
2.14 Heated Oxygen Sensor

To avoid the possibility of personal injury,
allow the exhaust pipe to cool to ambient
temperature (less than 50 °
°°
°
C) before
attempting to remove the oxygen sensor.
Service Precautions
• Handle the HO2S carefully. Do not drop it, and keep it free of grease, dirt and other contaminants. Do not use
cleaning solvents of any type on the HO2S.
• Do not repair the HO2S or any of its parts. Replace the HO2S if any damage is evident.
• The HO2S may be difficult to remove when the engine is cold. Excessive force may damage the threads in the
exhaust manifold or exhaust pipe.

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ISUZU KB P190 2007

Engine Management – V6 – Service Operations Page 6C1-3–35

6 Unscrew the HO2S (1) from the exhaust pipe and
remove.
7 If required, test the HO2S, refer to the Test in this Section.

Figure 6C1-3 – 44
Reinstall
Reinstallation of the heated oxygen sensor (HO2S) is the reverse of the removal procedure, noting the following:
1 Ensure the protective cover (1) is securely in place, and the gortex filter (2) has not been covered or
sealed.
Figure 6C1-3 – 45

A special anti-seize compound is used on the
HO2S threads. A new HO2S will already have
the anti-seize compound applied to the
threads.
If a HO2S has been removed, but not replaced,
an anti-seize compound must be applied to
the threads prior to installation.
2 Coat the cleaned threads of the HO2S with anti-seize compound.
3 Tighten the HO2S to the correct torque specification.
Heated oxygen sensor
torque specification .................................40.0 – 50.0 Nm
4 Road test the vehicle and check for correct operation, taking particular note that no exhaust leakage is evident.
Four Wire Sensor
The replacement procedure for Bank 1 (RHS) and Bank 2 (LHS) four wire heated oxygen sensor (HO2S) are typically the
same, with the following procedure being specific to Bank 2.

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Engine Management – V6 – Service Operations Page 6C1-3–36

Remove
1 Turn the ignition switch off.
2 Raise the vehicle and support on safety stands, refer to 0A General Information for location of the jacking points.
3 Unclip the HO2S wiring harness (1) from the transmission.
4 Depress the harness connector retaining clip (2) and separate the harness connectors.
5 Unscrew the HO2S (3) from the exhaust pipe and remove.
6 If required, test the HO2S, refer to the Test in this Section.
Figure 6C1-3 – 46
Reinstall
Reinstallation of the heated oxygen sensor (HO2S) is the reverse of the removal procedure, noting the following:

A special anti-seize compound is used on the
HO2S threads. A new HO2S will already have
the anti-seize compound applied to the
threads.
If a HO2S has been removed, but not replaced,
then anti-seize compound must be applied to
the threads prior to installation.
1 Coat the cleaned threads of the sensor with anti-seize compound.
2 Tighten the HO2S to the correct torque specification.
Heated oxygen sensor
torque specification .................................40.0 – 50.0 Nm
3 Road test the vehicle and check for correct operation, taking particular note that no exhaust leakage is evident.

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ISUZU KB P190 2007

Engine Management – V6 – Service Operations Page 6C1-3–40

Reinstall
Reinstallation of the ignition coil is the reverse of the removal procedure, noting the following:
1 Lubricate the ignition coil sealing rubber (1) with clean engine oil, and the inside of the ignition coil boot (2)
with talcum powder.
Figure 6C1-3 – 53
2 Reinstall the ignition coil by pushing down on the ignition coil to engage the sealing rubber in the camshaft cover.

Ensure the ignition coil is fully seated before
tightening the attaching bolt to the specified
torque.
3 Reinstall the ignition coil bolt and tighten to the correct torque specification. Ignition coil attaching bolt
torque specification ...................................7.0 – 11.0 Nm
4 Road test the vehicle and check for correct operation.
2.16 Intake Air Duct Assembly
Remove
1 Turn the ignition switch off.
2 Disconnect the crankcase ventilation hose (1) from the air intake duct (2).
3 Loosen the two air intake duct retaining clamps (3),
4 Pull the air intake duct away from the throttle body.
5 Pull the air intake duct away from the mass air flow sensor.
Figure 6C1-3 – 54


Reinstall
Reinstallation of the air intake duct is the reverse of the removal procedure, noting the following:

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ISUZU KB P190 2007

Engine Management – V6 – Service Operations Page 6C1-3–41


Ensure the air intake duct sealing rubber is
correctly positioned on the throttle body.
Failure to do this may result in engine
damage due to unfiltered air entering the
engine intake system.
1 Reinstall the air intake duct and tighten the retaining clamps to the correct torque specification. Air intake duct retaining clamp
torque specification .....................................1.8 – 2.2 Nm
2 Road test the vehicle and check for correct operation, taking particular note that no air leaks are evident.
2.17 Intake Air Temperature Sensor
The intake air temperature (IAT) sensor is part of the mass air flow (MAF) sensor assembly, refer to 2.20 Mass Air
Flow Sensor for the replacement procedure.
Test

To prevent component damage use connector
test adaptor kit J 35616-A.
Resistance Check

Do not use a high temperature heat gun as
damage to the MAF sensor will result.
1 Connect a digital ohmmeter using connector test adaptor kit J 35616-A to the MAF sensor.
2 W hilst holding a thermometer (3), use a commercially available hair dryer (4) to blow warm air through the
MAF sensor.
3 Measure the resistance across terminals 1 and 2.

Figure 6C1-3 – 55

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Engine Management – V6 – Service Operations Page 6C1-3–43

6 Remove the bolt (1) attaching the knock sensor (2) to
the engine block and remove the knock sensor.
Figure 6C1-3 – 57
Reinstall
Reinstallation of the knock sensor is the reverse of the removal procedure, noting the following:
1 Ensure the knock sensor mounting surface is flat and free of any dirt, oxidisation, etc.

Ensure the knock sensor is fully seated and
correctly aligned before tightening the
attaching bolt.
Do not over-tighten the attaching bolt as
incorrect operation of the knock sensor may
result.
2 Reinstall the knock sensor and bolt (1). Align the knock sensor so that it is parallel to the engine oil pan
mounting surface (2), ± 3° (3).
3 Tighten the knock sensor bolt to the correct torque specification.
Knock sensor attaching bolt
torque specification .................................21.0 – 25.0 Nm
4 Road test the vehicle and check for correct operation, taking particular note that no exhaust leaks are
evident.
Figure 6C1-3 – 58
2.19 Knock Sensor, Bank 1 (RHS)
Remove

1 Turn the ignition switch off.
2 Raise the front of the vehicle and support on safety stands, refer to 0A General Information for location of the jacking points.

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Engine Management – V6 – Service Operations Page 6C1-3–45


Ensure the knock sensor is fully seated
before tightening the attaching bolt.
Do not over-tighten the attaching bolt as
incorrect operation of the knock sensor may
result.
2 Reinstall the knock sensor and bolt (1). Align the knock sensor so that it is parallel to the engine oil pan
mounting surface (2), ± 3° (3).
3 Tighten the knock sensor bolt to the correct torque specification.
Knock sensor attaching bolt
torque specification .................................21.0 – 25.0 Nm
4 Road test the vehicle and check for correct operation.
Figure 6C1-3 – 61
2.20 Mass Air Flow Sensor
The intake air temperature (IAT) sensor is part of the mass air flow (MAF) Sensor. For the IAT sensor test procedure
refer to 2.17 Intake Air Temperature Sensor.
Handling Precautions

Under no circumstances should the MAF
sensor retaining screws (1) be loosened or
removed as the MAF will become
unserviceable and will require replacement.

Figure 6C1-3 – 62
Remove
1 Turn the ignition switch off.

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