2007 ISUZU KB P190 engine oil

7A3-12 ON-VEHICLE SERVICE (AW30–40LE)
Measure Line Pressure
1. Fully apply the parking brake and chock the four
wheels.
2. Start the engine and check idling rpm.
3. Select into “D" position, step down strongly on the brake pedal with your left foot and while
manipulating the accelerator pedal with the right
foot, measure the line pressures at the engine
speeds specified in the table.
4. In the same manner, perform the test in “R" position.


Line pressure kPa (kg/cm
2/psi) Engine
speed “D" position “R" position
Idling 349 – 408
(3.6 – 4.2 /51 – 59) 577 – 675
(5.9 – 6.9/84 – 98)
Stall 1,206 – 1,353
(12.3–13.8/175–196) 1,646 – 1,979
(16.8–20.2/239–287)

Evaluation
1. If the measured values at all positions are higher
than specified:
• Pressure control solenoid defective
• Primary regulator valve defective
2. If the measured values at all positions are lowe
r
than specified:
• Primary regulator valve defective
• Oil pump defective
• Pressure control solenoid defective
3. If pressure is low in “D" position only:
• “D" position circuit fluid leakage
4. If pressure is low in “R" position only:
• “R" position circuit fluid leakage
Road Test
NOTE: Perform the test at normal operating fluid
temperature (50 – 80 °C or 122 – 176 °F).
“D" Position Test in “NORMAL", and
“POWER" Pattern
Select into the “D" position and hold the accelerator
pedal constant at the 50% and 100% throttle valve
opening positions.
Push in one of the pattern selector buttons and check
the following:

1. 1–2, 2–3, 3–OD and lock-up, upshifts should take
place, and shift points should conform to those
shown in the automatic shift diagram.


RTW 77ASH003001



RUA37ASH000101



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ISUZU KB P190 2007

ON-VEHICLE SERVICE (AW30–40LE) 7A3-19
ATF Replacement
Inspection
NOTE: Do not overfill.
1. Remove the drain plug from oil pan and drain the
fluid.





RUW 17ASH013401
2. Reinstall the drain plug securely.
Torque: 19 N ⋅
⋅⋅
⋅
m (1.9 kgf ⋅
⋅⋅
⋅
m/14 Ib ⋅
⋅⋅
⋅
ft)
3. W ith the engine OFF, add new fluid through the fille
r
tube.



Drain and refill 5.2 liter
Dry fill 8.7 liter
Fluid Exxon Mobil ATF-3309
4. Start the engine and shift the selector into all
position from “P" through “L", and then shift into “P".
5. W ith the engine idling, check the fluid level. Add fluid up to the “COLD" level on the dipstick.
6. The ATF level must be checked again for correct level with the “HOT" level.
NOTE: To prevent fluid leaks, the drain plug gasket
must be replaced each time this plug is removed.



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7A3-32 ON-VEHICLE SERVICE (AW30–40LE)
Shift Solenoid and Lock-Up Solenoid
Removal
Preparation:
• Disconnect negative (–) battery cable.
• Drain the fluid.
Refer to ATF REPLACEMENT in this section.
1. Remove oil lever gage and oil filler tube.
2. Support transfer case (4
×4) or rear cover (4×2)
with a transmission jack.
3. Remove engine rear mounting nuts.


F07RW 008
4. Remove fule pipe heat protector on tansmission
corssmenber.
5. Remove fuel pipe from the crossmenber.
6. Remove transmission crossmenber.
7. Remove the nineteen bolts.
8. Remove oil pan, using seal cutter 5-8840-2153-0.





RUW 37ASH002901
NOTE: Do not turn over the transmission as this will
contaminate the valve body with foreign materials in the
bottom of the oil pan.
Remove oil pan by lifting the transmission case.
Oil pan seal cutter: 5-8840-2153-0
Examine particles in oil pan
Remove the magnet and use it to collect any steel
chips.
Look carefully at the chips and particles in the oil
pan and on the magnet to anticipate what type o
f
wear you will find in the transmission:
Steel (magnetic) .................. bearing, gear and
clutch plate wear
Brass (non-magnetic).......... bushing wear




240RY00008
9. Remove the oil strainer assembly.




244RY00003

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ISUZU KB P190 2007

ON-VEHICLE SERVICE (AW30–40LE) 7A3-45
3. Remove a engine jack.
4. Remove a transmission jack.
5. Connect the two fuel pipe clips (1) on the transmission crossmember left side.




RTW 77ASH002701
6. Install the torque converter bolts.
Torque: 29 N ⋅
⋅⋅
⋅
m(3.0 kgf ⋅m/22 lb ⋅ft)
NOTE: Do not reuse the torque converter bolts.
7. Install the under cover(1). Torque: 8 N ⋅
⋅⋅
⋅
m(0.8 kgf ⋅m/69 lb ⋅in)





RTW 77ASH002601
8. Connect two ATF pipes.
Torque: 44 N ⋅
⋅⋅
⋅
m(4.5 kgf ⋅m/33 lb ⋅ft)
9. Install the ATF pipe bolt (1).




RTW 77ASH002501
10.Connect the starter assembly with shift cable
bracket.
Torque: 76 N ⋅
⋅⋅
⋅
m(7.7 kgf ⋅m/56 lb ⋅ft)
11.Connect the shift cable bracket on the transmission side.
12.Install the fuel pipe bracket bolt (1) on clutch housing lower left side.
Torque: 76 N ⋅
⋅⋅
⋅
m(7.7 kgf ⋅m/56 lb ⋅ft)





RTW 77ASH002401
13.Install the oil level gauge and upper guide tube.



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7A4–98 UNIT REPAIR (AW30–40LE)
Main Data and Specifications
General Specifications
Remaks
Model AW30–40LE
Engine 4JJ1-TC High Output (3.0L)
Type Electronic control planetary gear type
3–element 1 –stage 2 –phase type
(with lock-up mechanism)
Gear ratio 1st 2.804
2nd 1.532
3rd 1.000
4th (O/D) 0.705
Reverse 2.394
Oil used Name Exxon Mobil ATF-3309
Q'ty (l) 8.7
Torque conver ter 2300 ± 200 Stall speed (rpm)
Friction element Forward clutch C–16
Number of discs
Direct clutch C–25
OD direct clutch C–03
Second coast brake B–1 40 mm Band width or
Number of discs
Second brake B–25
Number of discs
First and reverse brake B–37
Overdrive brake B–05
Clutch One-way clutch No.1 F–12 2
Number of
sprage
One-way clutch No.2
F–22 8
OD one-way clutch F–02 4
Planetary gear Front planetary Sun gear 42
Number of teeth
Pinion gear
19
Ring gear 79
Rear planetary Sun gear 33
Pinion gear 23
Ring gear 79
O/D planetary Sun gear 33
Pinion gear 23
Ring gear 79

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CONSTRUCTION AND FUNCTION 7A1-1

SECTION 7A1
CONSTRUCTION AND FUNCTION (JR405E)
TABLE OF CONTENTS
PAGE
Description ................................................................................................................... ...7A1- 3
Construction ...............................................................................................................7A1 - 3
Main Data and Specification .....................................................................................7A1- 4
Number Plate Location ..............................................................................................7A1- 5
Electronic Control Components Location ...............................................................7A1- 6
Transmission Control Module (TCM) Peripheral Circuit .........................................7A1- 7
Structure and Function of Component .........................................................................7A1- 8
Torque Converter (with Lock-up Function) .............................................................7A1- 8
Oil Pump .....................................................................................................................7 A1- 9
Input Shaft ..................................................................................................................7 A1- 10
Output Shaft ...............................................................................................................7A1 - 10
Gear Shifting Mechanism ..........................................................................................7A1- 10
Control Valve ..............................................................................................................7A1 - 14
Oil Passage .................................................................................................................7A 1- 19
Parking Function ........................................................................................................7A1- 2 0
Inhibitor Switch ..........................................................................................................7A1- 21
Turbine Sensor ...........................................................................................................7A1- 22
Speed Sensor .............................................................................................................7A1- 22
Accelerator Pedal Position Sensor ..........................................................................7A1- 23
Engine Speed Sensor (=CKP Sensor) ......................................................................7A1- 23
Brake Switch ..............................................................................................................7A1- 24
Mode Select Switch ...................................................................................................7A1- 24
Transmission Control Module (TCM) .......................................................................7A1- 25
Control Mechanism ........................................................................................................7A1- 26
Content of Function and Control ..............................................................................7A1- 26
Control Item, Input and Output .................................................................................7A1- 29
Line Pressure Control ................................................................................................7A1- 30
Lock-up Control .........................................................................................................7A1- 3 0
Direct Electric Shift Control (DESC) .........................................................................7A1- 31

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7A1-6 CONSTRUCTION AND FUNCTION
ELECTRONIC CONTROL COMPONENTS LOCATION
4WD Only 4W D Only
Instrument panel (Meter)







Speed meter (2WD Only)
Shift position indicator lamp
POWER DRIVE, 3rd START
indicator lamp
A/T OIL TEMP indicator lamp
CHECK TRANS indicator lam
p
Brake pedal





Brake Switch
Transmission Control Module (TCM)

Electrical source






Ignition
Battery voltage
Speed sensor
Turbine sensor
Inhibitor switch
ATF thermo sensor
High clutch oil pressure switch
2-4 brake oil pressure switch
Low & Reverse brake oil pressure
switch
Line pressure solenoid
Low clutch solenoid
High clutch solenoid
2-4 brake solenoid
Low & Reverse brake solenoid
Lock-up solenoid
Transmission
Transfer Control Module
Transfer




4L mode switch
Engine




Engine speed sensor
Accelerator pedal Position Sensor


Engine Control Module (ECM)
Data link connector
Select lever







Power Drive
, 3rd Start select switch

Figure 3. Electronic Control Components Location

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7A1-8 CONSTRUCTION AND FUNCTION
STRUCTURE AND FUNCTION OF COMPONENT
TORQUE CONVERTER (WITH LOCK-UP FUNCTION)
• The torque converter is a device for transmitting the engine torque to the transmission. It transmits power
by means of oil when the lock-up clutch is disengaged, and by means of a lock-up clutch when it is
engaged.
• The torque converter is of the symmetrical, three-element, single-stage, two-phase type.
• As shown in the drawing, the symmetrical three-elements refer to three elements (components) consisting
of impeller (1), turbine (2) and stator (3) that are arranged symmetrically (figure 5).
• "Single-stage" means that there is only one turbine as an output element; "two-phase" means that the
pump impeller acts as a torque converter when the turbine speed is comparatively low, and as a fluid
coupling when the speed is high.


















1. Pump Impeller
2. Turbine Runner
3. Stator














1. Pump Impeller
2. Turbine Runner
3. Stator
4. Converter Cover
5. One-way Clutch
6. Lock-up Piston
7. Torsion Damper

Figure 5. Torque Converter
Figure 6. Construction of Torque Converter

Lock-up mechanism
• "Lock-up" refers to a fixed state of the lock-up clutch inside the torque converter and thus connects the
engine directly to the transmission.
• The hydraulic pressure for the lock-up control is supplied from two circuits.

When the lock-up clutch is disengaged (Figure 7) • When the lock-up is disengaged, the torque converter operating pressure is supplied from the oil pass age
(A) to between the cover and the lock-up piston, and separates the lock-up piston clutch facing and
converter cover.
• As a result, the engine drive power is transmitted from the converter cover to the pump impeller, to the
ATF and to the turbine. The torque converter functions as a fluid connector in this condition.
• The torque converter operating pressure is supplied from oil passage (A), and passes through oil passage
(B).

When the lock-up clutch is engaged (Figure 8) • When the lock-up is engaged, the torque converter operating pressure is supplied from oil passage (B) to
the oil pump impeller, the turbine, and then to the stator side. The oil between the lock-up piston and
converter cover is drained.
• Since the force acting on the right side of the lock-up piston is greater than the force on the left side, it
connects the lock-up piston clutch facing with the converter cover, thereby increasing the transmission
efficiency.

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