2007 ISUZU KB P190 engine oil

Engine Management – V6 – Diagnostics Page 6C1-2–236

(1) Actual Gear -1- / -2- / -3- / -4- / -
5- / -P/N- / -R- / -Invalid- -P/N- -P/N-
Coolant Temperature
°C 36 105
Fuel Level
L 17 11
Fuel Level Sensor V 2.37 2.39
Engine Oil Pressure Sensor Low / High High High
Engine Oil Pressure kPa 24 120
Oil Level Normal / Low Normal Normal
Oil Temperature Sensor
°C 34 89
Malfunction Indicator (MI)
Off / On / Flashing On Off
Cruise Control Active No / Yes No No
Reduced Engine Power Inactive / Active Inactive Inactive
ECM Immobilized No / Yes No No
(1) Automatic Transmission Only (2) Manual Transmission Only
ODM Data (Output Driver Module)
Tech 2 Display Units Displayed Ignition On Engine Running
A/C Relay Status OK / Fault /
Undefined Status Undefined
Status Undefined
Status
Cylinder 1 Injector Circuit Status OK / Fault /
Undefined Status Undefined
Status OK
Cylinder 2 Injector Circuit Status
OK / Fault /
Undefined Status Undefined
Status OK
Cylinder 3 Injector Circuit Status
OK / Fault /
Undefined Status Undefined
Status OK
Cylinder 4 Injector Circuit Status
OK / Fault /
Undefined Status Undefined
Status OK
Cylinder 5 Injector Circuit Status
OK / Fault /
Undefined Status Undefined
Status OK
Cylinder 6 Injector Circuit Status
OK / Fault /
Undefined Status Undefined
Status OK
EVAP Purge Solenoid Valve Circuit Status (Evaporative
Emission) OK / Fault /
Undefined Status Undefined
Status OK
Fuel Pump Relay Circuit Status
OK / Fault /
Undefined Status Undefined
Status Undefined
Status
B1S1 O2 Sensor Heater Circuit Status (Bank 1 Sensor 1) OK / Fault /
Undefined Status Undefined
Status Undefined
Status
B1S2 O2 Sensor Heater Circuit Status (Bank 1 Sensor 2) OK / Fault /
Undefined Status Undefined
Status Undefined
Status
B2S1 O2 Sensor Heater Circuit Status (Bank 2 Sensor 1) OK / Fault /
Undefined Status Undefined
Status Undefined
Status
B2S2 O2 Sensor Heater Circuit Status (Bank 2 Sensor 2) OK / Fault /
Undefined Status Undefined
Status Undefined
Status
Malfunction Indicator (MI) Circuit Status OK / Fault /
Undefined Status Undefined
Status Undefined
Status

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ISUZU KB P190 2007

Engine Management – V6 – Diagnostics Page 6C1-2–237

Starter Relay Circuit Status OK / Fault /
Undefined Status Undefined
Status Undefined
Status
Engine Runtime h:m:s 00:00:00 00:23:02
(1) Automatic Transmission Only (2) Manual Transmission Only
Misfire Data
Tech 2 Display Units Displayed Ignition On Engine Running
Cycles of Misfire Counts 0 0 – 3000
(Increments)
Total Misfire Counts 0 0
Misfire Current Cyl. #1 Counts 0 0
Misfire Current Cyl. #2 Counts 0 0
Misfire Current Cyl. #3 Counts 0 0
Misfire Current Cyl. #4 Counts 0 0
Misfire Current Cyl. #5 Counts 0 0
Misfire Current Cyl. #6 Counts 0 0
Misfire History Cyl. #1 Counts 0 0
Misfire History Cyl. #2 Counts 0 0
Misfire History Cyl. #3 Counts 0 0
Misfire History Cyl. #4 Counts 0 0
Misfire History Cyl. #5 Counts 0 0
Misfire History Cyl. #6 Counts 0 0
A/C Relay (Air Conditioning) Off / On Off Off
Barometric Pressure kPa 102 102
B1 Catalyst Temperature (Bank 1) °C 300 300
B2 Catalyst Temperature (Bank 2) °C 300 300
Catalyst Protection Mode Inactive / Active Inactive Inactive
(1) Transmission Gear P-N / In Gear P-N P-N
Coolant Temperature
°C 36 101
Engine Load % 100 19
Engine Oil Pressure kPa 24 120
Engine Runtime h:m:s 00:00:00 00:37:48
Ignition On Signal Off / On On On
Injection Time Cylinder 1 ms 0.0 1.9
Injection Time Cylinder 2 ms 0.0 1.9
Injection Time Cylinder 3 ms 0.0 1.9
Injection Time Cylinder 4 ms 0.0 1.9
Injection Time Cylinder 5 ms 0.0 1.9
Injection Time Cylinder 6 ms 0.0 1.9
B1 Average Injection Time (Bank 1) ms 0.0 1.9

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ISUZU KB P190 2007

Engine Management – V6 – Diagnostics Page 6C1-2–240

Cruise Control Switch: This parameter displays the state of the cruise control on/off switch input to the control module.
Cruise Control Disengagement Reason: The parameter displays which of a possible 28 causes for the cruise control
to disengage.
CC Disengagement 1 – 8 History (Cruise Control): The parameter displays the last 8 cruise control disengages in
order from 1 to 8, with 8 being the most recent. There are about 28 possible causes for the cruise control to disengage.
Cruise Resume/Acceleration Switch: This parameter displays the state of the cruise control resume/accel switch
position input to the ECM.
Cruise Set / Coast Switch: This parameter displays the state of the cruise controls set/decel. switch position input to
the ECM.
Cycles of Misfire: This parameter displays the number of misfire tests during 200 engine revolutions.
Cylinder 1 – 6 Injector Circuit Status: This parameter displays the state of the fuel injector control circuit. The
parameter displays ‘Fault’ if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This
parameter displays ‘Undefined Status’ until the control circuit has been commanded ‘On’.
Dec. Fuel Cutoff (Deceleration): This parameter displays the status of the ECM operating mode, used to turn off the
fuel injectors and the evaporative emission (EVAP) canister purge valve during certain deceleration conditions.
Desired Engine Idle Speed: This parameter displays the desired engine idle speed as commanded by the ECM.
Desired Throttle Position: This parameter displays the desired throttle position (TP) angle commanded by the ECM.
Distance Since DTC Cleared: This parameter displays the distance (km) travelled since any diagnostic trouble code
(DTC) has been cleared from the ECM memory.
DTC Set This Ignition: This parameter displays Yes if a DTC set on the current ignition cycle.
ECM Immobilized: This parameter displays ‘Yes’ when an internal control module reset occurs. Tech 2 will display ‘No’
under normal operating conditions.
Electronic Throttle Control Learn Counter: W hen the ECM performs a throttle body relearn procedure, the throttle
plate is commanded to move from the rest position (7% open) to full closed (0%), then to around 10% open.
At the start of this procedure, the Tech 2 ‘TAC Learn Counter’ parameter should display 0, then count up to 11 after the
procedure is completed. If the counter did not start at 0 or if the counter did not end at 11, a fault has occurred and a
DTC should set.
Engine Control Ignition Relay: This parameter displays the state of the control circuit for control module power relay
as commanded by the ECM.
Engine Control Ignition Relay Feedback: This parameter displays the voltage available at the engine control ignition
relay pin of the control module.
Engine Load: This parameter displays the calculated engine load in percent based on inputs to the control module from
various engine sensors.
Engine Oil Life Remaining: This parameter displays the percentage of engine oil life remaining. The controller
calculates the engine oil life by monitoring engine load, collant temperature and engine speed.
Engine Oil Pressure: This parameter displays the oil pressure in kPa from the ECM, developed from the engine oil
pressure (EOP) sensor input.
Engine Oil Pressure Sensor: This parameter displays ‘High’ if the engine oil pressure is within the correct range. If the
ECM detects that the engine oil pressure is not within the correct range, Tech 2 will display ‘Low’.
Engine Runtime: This parameter displays the time elapsed since the engine was started.
Engine Speed: This parameter displays the speed of the engine crankshaft rotation from information received from the
CKP sensor. If there is a CKP sensor DTC, the ECM calculates the engine speed from one of the camshaft position
(CMP) sensors.
EVAP Purge Solenoid (Evaporative Emission): This parameter displays the on-time or duty cycle of the EVAP
canister purge solenoid commanded by the ECM. Zero percent indicates no purge. One hundred percent indicates full
purge.
EVAP Purge Solenoid Valve Circuit Status (Evaporative Emission): This parameter displays the state of the EVAP
purge solenoid control circuit. The parameter displays ‘Fault’ if the EVAP purge solenoid control circuit is open, shorted
to ground, or shorted to voltage. The parameter displays ‘Undefined Status’ until the circuit has been established as
‘OK’.
Cooling Fan Relay: This parameter displays the control module commanded state of the fan relay control circuit.

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Engine Management – V6 – Diagnostics Page 6C1-2–241

Cooling Fan Relay Circuit Status: This parameter displays the state of the fan relay control circuit. The parameter
displays ‘Fault’ if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays
‘Undefined’ until the relay control circuit has been determined as being ‘OK’.
Fuel Level: This parameter displays the amount of fuel in the fuel tank in litres, as calculated by the ECM from data
received from the fuel level sensor.
Fuel Level Sensor: This parameter displays the voltage received from the fuel level sensor in the fuel tank, by the ECM.
Fuel Pump Relay Circuit Status: This parameter displays the state of the fuel pump relay control circuit. The
parameter displays ‘Fault’ if the fuel pump relay control circuit is open, shorted to ground, or shorted to voltage. The
parameter displays ‘Undefined’ until the relay control circuit has been determined as being ‘OK’.
Fuel Pump Relay: This parameter displays the ECM commanded state of the fuel pump relay control circuit.
Fuel Trim Learn: This parameter displays ‘Enabled’ when conditions are appropriate for enabling long term fuel trim
corrections. This indicates that the long term fuel trim is adapting continuing amounts of short term fuel trim. If Tech 2
displays ‘Disabled’, then long term fuel trim will not respond to changes in short term fuel trim.
Ignition Accessory Signal: This parameter displays ‘On’ when the control module detects a voltage at the
ignition ‘ACC’ terminal, X1-4 of the ignition switch.
Ignition On Signal: This parameter displays ‘On’ when the control module detects a voltage at the ignition ‘IGN’
terminal X1-3 of the ignition switch.
Initial Brake Apply Signal: This parameter displays the status of the brake lamp switch. Before the cruise control can
be activated, this switch contact must be open circuit when the brake pedal is pressed.
Injection Time Cylinder 1 – 6: This parameter displays the amount of fuel injector On-time or pulse width as
commanded by the ECM.
Intake Air Temperature: This parameter displays the temperature of the air entering the air induction system based on
input to the ECM from the intake air temperature (IAT) sensor.
Knock Sensor Signal (Bank 1 or Bank 2): This parameters displays the voltage input to the control module from the
knock sensor (KS).
Knock Retard: This parameter indicates the amount of spark advance in crankshaft degrees, that the ECM removes
from the ignition control (IC) spark advance in response to the signal from the knock sensors.
Knock Retard Cylinder 1 – 6: This parameter displays the knock retard as commanded by the ECM for cylinders 1-6.
Each cylinder is controlled individually based on both knock sensor signal inputs.
Loop Status B1S1 / B2S1 (Bank 1 or Bank 2 Sensor 1): This parameter displays the state of the fuel control system
as commanded by the ECM. ‘Closed’ Loop operation indicates that the ECM is controlling the fuel delivery based on the
oxygen sensors input signal. In ‘Open’ Loop operation the ECM ignores the oxygen sensor input signal and bases the
amount of fuel to be delivered on other sensor inputs.
LTFT Idle/Deceleration (Bank 1 or Bank 2) (Long Term Fuel Trim): This parameter displays the commanded Long
Term Fuel Trim correction by the ECM for bank 1 or bank 2 for idle and deceleration conditions.
LTFT Cruise/Acceleration (Bank 1 or Bank 2) (Long Term Fuel Trim): This parameter displays the commanded Long
Term Fuel Trim correction by the ECM for bank 1 or bank 2 for cruise and acceleration conditions.
Malfunction Indicator (MI): This parameter displays the commanded (‘On, ‘Off’ or ‘Flashing’) state of the malfunction
indicator lamp (MIL) control circuit by the ECM.
Malfunction Indicator (MI) Circuit Status: This parameter displays the state of the MIL control circuit. The parameter
displays ‘Fault’ if the MIL control circuit is open, shorted to ground, or shorted to voltage. This parameter displays
‘Undefined Status’ until the circuit has been determined as being ‘OK’.
Mass Air Flow: This parameter displays the measured quantity (g/s) of air flowing into the engine during all operating
conditions.
Mass Air Flow Sensor: This parameter displays the signal voltage from the mass air flow (MAF) sensor to the ECM.
Misfire Current Cyl. #1 – #6: Tech 2 displays a range of 0 – 200 counts. This parameter displays the number of
misfires that have been detected during the last 200 cylinder firing events. The counters may normally display some
activity, but the activity should be nearly equal for all of the cylinders, and in low numbers.
Misfire History Cyl. #1 – #6: Tech 2 displays a range of 0 – 65,535 counts. The misfire history counters display the total
level of misfire that has been detected on each cylinder. The misfire history counters will not update or show any activity
until a misfire DTC P0300 has become active. The misfire history counters will update every 200 cylinder firing events.
Oil Level: W hen the ECM receives information from the engine oil level switch, where the engine oil level is within
preset parameters, Tech 2 will display ‘Normal’. If not within preset parameters, the display will show ‘Low’.

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Engine Management – V6 – Diagnostics Page 6C1-2–242

Oil Temperature Sensor: This parameter displays the engine oil temperature in degrees C.
Power Enrichment: This parameter displays the status of the operating mode of the ECM used to increase fuel delivery
during certain acceleration conditions.
Reduced Engine Power: This parameter displays when the ECM is commanding reduced engine power due to a
throttle actuator control (TAC) system condition.
Requested Torque: This parameter displays the calculated amount torque requested of the ECM by the Transmission
Control Module (TCM).
Short Term Fuel Trim (Bank 1 or Bank 2): This parameter displays the short-term correction to the fuel delivery by the
ECM in response to oxygen sensor 1 or 2. If the oxygen sensor indicates a lean air/fuel mixture, the control module will
add fuel, increasing the short term fuel trim above 0. If the oxygen sensor indicates a rich air/fuel mixture, the control
module will reduce fuel decreasing the short term fuel trim below 0.
Spark Advance: This parameter displays the amount of spark advance the ECM is commanding on the ignition control
circuits. The ECM determines the desired advance.
Starter Relay: This parameter displays the Em’s commanded state of the starter motor relay control circuit.
Starter Relay Circuit Status: This parameter displays the state of the starter relay control circuit. The parameter
displays ‘Fault’ if the starter relay control circuit is open, shorted to ground, or shorted to voltage. The parameter
displays Undefined Status’ until the circuit has been determined as being ‘OK’. This parameter may not change if Tech 2
is used to command the relay control circuit ON.
Start Up ECT (Engine Coolant Temperature): This parameter displays the temperature of the engine coolant on start
up based on input to the ECM from the ECT sensor.
Start Up IAT (Intake Air Temperature): This parameter displays the temperature of the intake air at start in the air
induction system based on input to the ECM from the IAT sensor.
Time Since Engine Off: This parameter displays the amount of time (hours:minutes:seconds) that has elapsed since
the engine was last cycled OFF.
Total Fuel Trim (Bank 1 or Bank 2): This parameter displays the overall fuel trim from the idle/decel cell and the
cruise/accel cell.
Total Misfire: This parameter displays the total number of cylinder firing events that the control module detected as
misfires for the last 200 crankshaft revolution sample period.
TP Sensor 1 (Throttle Position): This parameter displays the actual voltage on the TP sensor 1 signal circuit as
measured by the ECM.
TP Sensor 1 Learned Lower Position (Throttle Position): This parameter displays the learned minimum value of TP
sensor 1 as recorded by the ECM during the last learn procedure.
TP Sensor 2 (Throttle Position): This parameter displays the actual voltage on the TP sensor 2 signal circuit as
measured by the ECM.
TP Sensor 2 Learned Lower Position (Throttle Position): This parameter displays the learned minimum value of TP
sensor 2 as recorded by the ECM during the last learn procedure.
TP Sensor 1-2 Correlation (Throttle Position): This parameter displays ‘Fault’ when the ECM detects that TP sensor 1
voltage signal is not within the correct relationship to TP sensor 2. Tech 2 displays ‘Okay’ under normal operating
conditions.
Transmission Gear: This parameter displays the position of the transmission gear selector that is transmitted over the
serial data circuit from the TCM.
Transmission Gear Selector Signal: This parameter displays the position of the transmission gear selector that is
transmitted over the serial data circuit from the TCM.
Vehicle Speed: This parameter displays the speed of the vehicle as calculated by the TCM from information received
from the vehicle speed sensor (VSS).
Volumetric Efficiency: This parameter displays the volumetric efficiency of the engine as calculated by the control
module.
8.5 OBD Data
Typical Values Tech 2 Display Units Displayed
Ignition On Engine Running
B1S1 O2 Sensor (Bank 1 Sensor 1) mA 0.008 0

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Engine Management – V6 – Service Operations Page 6C1-3–2

Reinstall ................................................................................................................................................................ 20
ECM Reset ...................................................................................................................... ...................................... 20
2.8 Engine Control Module Bracket Assembly......................................................................................... ............... 21
Remove ................................................................................................................................................................. 21
Reinstall ................................................................................................................................................................ 21
2.9 Engine Oil Level and Temperature Sensor ........................................................................................ ................ 22
Remove ................................................................................................................................................................. 22
Test ....................................................................................................................................................................... 23
Engine Oil Level Sensor Check .................................................................................................. ...................... 23
Reinstall ................................................................................................................................................................ 23
2.10 Engine Oil Pressure Sensor..................................................................................................... ........................... 23
Remove ................................................................................................................................................................. 23
Reinstall ................................................................................................................................................................ 24
2.11 Evaporative Emission (EVAP) Canister Purge Valve Quick Connect Fittings ................................................ 24
Disconnect..................................................................................................................... ....................................... 24
Locking Lever Type ............................................................................................................. ............................. 25
Latch Type ....................................................................................................................................................... 25
Connect ............................................................................................................................................................ 25
2.12 Evaporative Emission Canister Purge Valve ...................................................................................... ............... 26
Remove ................................................................................................................................................................. 26
Test ....................................................................................................................................................................... 27
Resistance Check ............................................................................................................... ............................. 27
Functional Test................................................................................................................................................. 27
Reinstall ................................................................................................................................................................ 28
2.13 Fuel Rail Assembly ............................................................................................................. ................................. 28
Remove ................................................................................................................................................................. 28
Disassemble ......................................................................................................................................................... 30
Fuel Injector ..................................................................................................................................................... 30
Fuel Injector Wiring Harness Assembly.......................................................................................... .................. 32
Reinstall ................................................................................................................................................................ 33
2.14 Heated Oxygen Sensor........................................................................................................... ............................. 33
Service Precautions............................................................................................................................................. 33
Six Wire Sensor................................................................................................................................................ 34
Four Wire Sensor ............................................................................................................... .............................. 35
Test ....................................................................................................................................................................... 37
Heater Resistance Check – Six Wire HO2S........................................................................................ ............. 37
Heater Resistance Check – Four Wire HO2S ....................................................................................... ........... 37
2.15 Ignition Coil .......................................................................................................................................................... 38
Ignition Coils ................................................................................................................. ....................................... 38
Remove ............................................................................................................................................................ 38
Disassemble..................................................................................................................................................... 39
Reassemble ..................................................................................................................................................... 39
Test .................................................................................................................................................................. 39
Reinstall ........................................................................................................................................................... 40
2.16 Intake Air Duct Assembly....................................................................................................... ............................. 40
Remove ................................................................................................................................................................. 40
Reinstall ................................................................................................................................................................ 40
2.17 Intake Air Temperature Sensor .................................................................................................. ......................... 41
Test ....................................................................................................................................................................... 41
Resistance Check ............................................................................................................... ............................. 41
2.18 Knock Sensor, Bank 2 (LHS)..................................................................................................... .......................... 42
Remove ................................................................................................................................................................. 42
Reinstall ................................................................................................................................................................ 43
2.19 Knock Sensor, Bank 1 (RHS) ..................................................................................................... ......................... 43
Remove ................................................................................................................................................................. 43
Reinstall ................................................................................................................................................................ 44
2.20 Mass Air Flow Sensor........................................................................................................... ............................... 45
Handling Precautions .......................................................................................................................................... 45
Remove ................................................................................................................................................................. 45
Reinstall ................................................................................................................................................................ 46

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Engine Management – V6 – Service Operations Page 6C1-3–13


Clean the area around the CMP sensor before
removal to avoid debris from entering the
engine.
3 Remove the CMP sensor attaching bolt (1).
4 Remove the CMP sensor (2) by first twisting the sensor to release it, and then pulling it away from the
front engine cover to remove it.

Figure 6C1-3 – 8
Reinstall
Reinstallation of the camshaft position (CMP) sensor is the reverse of the removal procedure, noting the following:
1 Lubricate the CMP sensor O-ring with clean engine oil.
2 Reinstall the CMP sensor by pushing in on the sensor to engage the sensor O-ring in the front engine cover.

Ensure the CMP sensor is fully seated before
tightening the attaching bolt to the specified
torque.
3 Reinstall the CMP sensor bolt and tighten to the correct torque specification. Camshaft position sensor attaching bolt
torque specification ...................................8.0 – 12.0 Nm
4 Road test the vehicle and check for correct operation, taking particular note there is no engine oil leak from the CMP sensor.
2.5 Crankshaft Position Sensor
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 6C1-3–15

Test

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

1 Connect a digital ohmmeter using connector test adaptor kit J 35616-A to the crankshaft position (CKP)
sensor.
2 Measure the resistance across terminals 1 and 2.
3 Compare the reading against the specification.
CKP sensor resistance @ 20°C ................ 850 – 1040 Ω
4 If the resistance is not within specification, replace the
CKP sensor.
Figure 6C1-3 – 11
Reinstall
Reinstallation of the crankshaft position (CKP) sensor is the reverse of the removal procedure, noting the following:
1 Lubricate the CKP sensor O-ring with clean engine oil.
2 Reinstall the CKP sensor by pushing down on the sensor to engage the sensor O-ring in the engine block.

Ensure the CKP sensor is fully seated before
tightening the attaching bolt to the specified
torque.
3 Reinstall the CKP sensor bolt and tighten to the correct torque specification. Crankshaft position sensor attaching bolt
torque specification ...................................8.0 – 12.0 Nm
4 Road test the vehicle and check for correct operation, taking particular note there is no engine oil leak from the CKP sensor.

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ISUZU KB P190 2007