2007 ISUZU KB P190 ignition

Engine Management – V6 – Service Operations Page 6C1-3–22

3 Road test the vehicle and check for correct operation.
2.9 Engine Oil Level and Temperature
Sensor

To avoid personal injury, take care when
draining the engine oil or removing the engine
oil level and temperature sensor whilst the
engine is hot. Allow the engine to cool before
performing this procedure.
Remove
1 Turn the ignition switch off.
2 Raise the front and rear of the vehicle and support on safety stands, refer to 0A General Information for location of the jacking points.
3 Drain the engine oil, refer to 6A1 Engine Mechanical – V6.

Clean the area around the engine oil level
and temperature sensor (1) before removal to
avoid debris from entering the engine.
4 Disconnect the wiring harness connector (2) from the engine oil level and temperature sensor.

Figure 6C1-3 – 19
5 Using a 11/8" deep socket and socket bar, remove the engine oil level and temperature sensor (1).
6 If required, test the Engine Oil Level and Temperature sensor as follows, refer to the Test in this Section.
Figure 6C1-3 – 20

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Engine Management – V6 – Service Operations Page 6C1-3–23

Test
Engine Oil Level Sensor Check
1 W ith the aid of an assistant, perform the following:
a W hilst holding the engine oil level and temperature sensor (1) in a level position, connect a digital ohmmeter using connector test adaptor kit J 35616-A to terminals A and C, refer to Figure 6C1-3 – 21.
b W ith the flat surface of the float (2) positioned at the bottom, ensure continuity does not exist.
c Push the float upwards so the magnetic pin (3), on the inside of the float (the side of the float with the flat side) contacts the engine oil level sensor. Check for continuity whilst holding the float in this position.

Figure 6C1-3 – 21
2 If any of the above tests fail, replace the engine oil level sensor.
Reinstall
Reinstallation of the engine oil level and temperature sensor is the reverse of the removal procedure, noting the
following:
1 Lubricate the O-ring and threaded portion of the sensor with clean engine oil.
2 Tighten the engine oil level and temperature sensor to the correct torque specification.
Engine oil level and temperature sensor
torque specification – wet........................11.0 – 15.0 Nm
3 Refill the engine with engine oil, refer to 6A1 Engine Mechanical – V6.
4 Road test the vehicle and check for correct operation, taking particular note there is no engine oil leakage from the oil level and temperature sensor.
2.10 Engine Oil Pressure Sensor

To avoid personal injury, take care when
removing the engine oil pressure sensor
when the engine is hot. Allow the engine to
cool before performing this procedure.
Remove
1 Turn the ignition switch off.

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Engine Management – V6 – Service Operations Page 6C1-3–26

2 Push the hose quick connect fitting onto the purge
valve fitting. There will be an audible click as the quick
connect fitting engages.
3 Check the locking lever has returned to its rest position.
4 Check the quick connect fittings have fully engaged by gently pulling the quick connect fitting away from the
purge valve.
Figure 6C1-3 – 26
2.12 Evaporative Emission Canister Purge
Valve
Remove
1 Turn the ignition switch off.
2 Disconnect the wiring harness connector (1) from the evaporative emission (EVAP) canister purge valve (2).
3 Disconnect the two EVAP canister purge valve hoses (3 and 4), refer to 2.11 Evaporative Emission
(EVAP) Canister Purge Valve Quick Connect Fittings.
Figure 6C1-3 – 27
4 Slide the EVAP canister purge valve (1) from the purge valve mounting bracket (2).
5 If required, test the EVAP canister purge valve, refer to the Test in this Section.
Figure 6C1-3 – 28

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Engine Management – V6 – Service Operations Page 6C1-3–28

2 Using connector test adaptor kit J 35616-A, connect a
12 V battery, an on / off switch and a 3 A fused wire to
the EVAP canister purge valve terminals as follows:
• Positive lead to terminal 1.
• Negative lead to terminal 2.

Figure 6C1-3 – 31

Do not apply 12 V to the EVAP canister purge
valve continuously for more than three
seconds as the EVAP canister purge valve
will be damaged.
3 Turn the switch on, and listen for an audible click as the EVAP canister purge valve operates. W hilst the switch is in the on position, blow air through the inlet port.
4 If no air passes through the EVAP canister purge valve, check the valve inlet and outlet ports for any obstructions and rectify if necessary. If there are no obstructions, replace the valve.
Reinstall
Reinstallation of the evaporative emission canister purge valve is the reverse of the removal procedure, noting the
following:
1 Connect the purge valve hose quick connect fittings, refer to 2.11 Evaporative Emission (EVAP) Canister Purge Valve Quick Connect Fittings.
2 Road test the vehicle and check for correct operation, taking particular note that no air leaks are evident.
2.13 Fuel Rail Assembly

A depressurised fuel system contains
residual fuel that can be spilled during service
operations, refer to 6C Fuel System – V6 for
further information on handling fuel.
Remove
1 Depressurise the fuel system, refer to 6C Fuel System - V6.
2 Turn the ignition switch off.

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Engine Management – V6 – Service Operations Page 6C1-3–34

• If the HO2S has been removed, but not replaced, anti-seize compound must be applied to the threads prior to
installation. New HO2S will already have the anti-seize compound applied.
• For vehicles with the six wire HO2S sensor, under no
circumstances should the protective cover (1) be
removed, or the gortex filter (2) be covered and / or
sealed.
Figure 6C1-3 – 42
Six Wire Sensor
The replacement procedure for Bank 1 and Bank 2 six wire heated oxygen sensor (HO2S) are typically the same, with
the following procedure being specific to Bank 1.
Remove
1 Turn the ignition switch off.
2 Unclip the HO2S wiring harness connector assembly (1) from the ignition coil wiring harness tray, refer to Figure 6C1-3 – 43. View A refers to Bank 1, and View B refers to Bank 2.
3 Slide the connector locking tang (2) away from the harness connector.
4 Separate the harness connector (3).

Figure 6C1-3 – 43
5 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 6C1-3–36

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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Engine Management – V6 – Service Operations Page 6C1-3–38

2.15 Ignition Coil
Ignition Coils
The replacement procedure for all ignition coils is the same except for the removal of the ignition coil on cylinder No's 1,
3 and 4, it is necessary to remove the upper intake manifold assembly.
Remove
1 Turn the ignition switch off.
NOTE
If the upper intake manifold has been removed,
plug the lower manifold openings to prevent dirt
and other contaminants from entering.
2 If required, remove the upper intake manifold assembly, refer to 6A1 Engine Mechanical – V6.
3 Using a flat-blade screwdriver, slide the connector retaining latch (1) in the direction of the arrow.
4 Remove the wiring harness connector from the ignition coil (2).
Figure 6C1-3 – 49

Clean the area around the ignition coil before
removal to avoid debris from entering the
engine.
5 Fully loosen the bolt (1) attaching the ignition coil (2) to the camshaft cover.
NOTE
The ignition coil bolts are captive. Do not attempt
to remove the bolts from the ignition coil.
6 Remove the ignition coil by first, twisting the coil to release it, and then pulling the ignition coil upwards to
remove it.
Figure 6C1-3 – 50

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Engine Management – V6 – Service Operations Page 6C1-3–39

Disassemble

Do not use a sharp implement such as a knife
to cut the ignition coil boot (1) from the
ignition coil. Using a sharp implement may
damage the ignition coil insulator (2).
1 Using your thumb, work the ignition coil boot off the ignition coil insulator.
NOTE
Take care the spring (3) does not become
dislodged as the boot is removed.
To aid removal of the boot, use a blunt
instrument to lift the boot edge away from the
coil insulator and spray a release agent between
the boot and the coil insulator.
2 Remove the spring from the ignition coil insulator.
Figure 6C1-3 – 51
Reassemble
1 Position the spring (3) in the insulator recess, refer to Figure 6C1-3 – 51.
2 Lubricate the ignition coil insulator (1) with talcum powder.
3 Fit the ignition coil boot, ensuring it is fully seated at the top of the insulator.
Figure 6C1-3 – 52
Test

Never probe the ignition coil with a 12 V tester
as the ignition coil will be damaged.
Due to the internal components of the ignition coil assembly, it is not possible to perform any primary and / or secondary
resistance checks. For further information on the ignition coil operation, refer to 6C1-1 Engine Management – V6 –
General Information.

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