2007 ISUZU KB P190 Workshop Repair Manual

torque oil filter adding oil refuelling lumbar support transmission oil

Page 4273 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 7A1-34 CONSTRUCTION AND FUNCTION
MAJOR INPUT/OUTPUT COMPONENT AND THEIR FUNCTIONS
Speed sensor Detects output shaft revolution and sends rpm signal to TCM.
Turbine sensor Detects input shaft rev

7A1-34 CONSTRUCTION AND FUNCTION
MAJOR INPUT/OUTPUT COMPONENT AND THEIR FUNCTIONS
Speed sensor Detects output shaft revolution and sends rpm signal to TCM.
Turbine sensor Detects input shaft revolution and sends rpm signal to TCM.
Engine speed sensor Inputs engine revolution from engine control computer.
Brake switch Detects brake pedal operation by the driver and sends signal
to TCM.
Inhibitor switch Detects select lever position and sends signal to TCM.
Mode select switch Detects "Power Drive" or "3rd Start" selected by the driver and
sends signal to TCM.
4L switch (4W D Only) Inputs 4L mode from transfer control computer.
ATF thermo sensor Detects ATF temperature and sends signal to TCM.
High clutch oil pressure switch Detects high clutch supply oil pressure and sends signal to
TCM.
2-4 brake oil pressure switch Detects 2-4 brake supply oil pressure and sends signal to
TCM.
Low & Reverse brake oil pressure switch Detects low & reverse brake supply oil pressure and sends signal to TCM.
Accelerator Pedal position sensor Inputs throttle opening angle from engine control computer.
Input
TCM Judges necessary line pressure, gear shifting point and lock-up
operation based on electrical signals from switches and
sensors and sends appropriate signals to solenoids.
Line pressure solenoid Regulates oil pump delivery pressure to the appropriate line
pressure for current driving conditions based on a signal from
TCM.
Low clutch solenoid Selects appropriate gear shifting position for current driving
conditions and regulates low clutch supply oil pressure based
on a signal from TCM.
High clutch solenoid Selects appropriate gear shifting position for current driving
conditions and regulates high clutch supply oil pressure based
on a signal from TCM.
2-4 brake solenoid Selects appropriate gear shifting position for current driving
conditions and regulates 2-4 brake supply oil pressure based
on a signal from TCM.
Low & Reverse brake solenoid Selects appropriate gear shifting position for current driving
conditions and regulates low & reverse brake supply oil
pressure based on a signal from TCM.
Lock-up solenoid Regulates lock-up pressure to appropriate level for current
driving conditions based on a signal from TCM.
Mode indicator lamp Indicates POW ER DRIVE or 3rd START switch position.
Speed meter signal (2W D Only) Outputs vehicle speed to the speed meter.
A/T OIL TEMP indicator lamp Indicates A/T OIL TEMP indicator lamp in case of high
temperature.
Output
CHECK TRANS indicator lamp Indicates CHECK TRANS indicator lamp in case of
malfunction.

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

Page 4274 of 6020

ISUZU KB P190 2007 Workshop Repair Manual CONSTRUCTION AND FUNCTION 7A1-35
CONTROL CIRCUIT BLOCK DIAGRAM

Speed sensor
Turbine sensor
Brake switch
Inhibitor switch
Power drive, 3rd start
switch
ATF oil thermo sensor
High clut

Page 4275 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 7A1-36 CONSTRUCTION AND FUNCTION
GEAR TRAIN (TRANSMISSION MECHANISM) OPERATION AND
HYDRAULIC CIRCUIT
CONSTRUCTION AND OPERATION
The JR405E consists of two sets of planetary gears, three multi

Page 4276 of 6020

ISUZU KB P190 2007 Workshop Repair Manual CONSTRUCTION AND FUNCTION 7A1-37
COMPONENT AND THEIR OPERATING CONDITION

Clutch Brake Solenoid Pressure Switch
Select
lever
position
Gear
position
Gear Shift
Lock- up
L/C

Page 4277 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 7A1-38 CONSTRUCTION AND FUNCTION
P Position
Although the driving force of the input shaft is transmitted to the rear sun gear and reverse & high clutch
drum, the driving force is not transmitted

Page 4278 of 6020

ISUZU KB P190 2007 Workshop Repair Manual CONSTRUCTION AND FUNCTION 7A1-39
N Position
Although the driving force of the input shaft is transmitted to the rear sun gear and reverse & high clutch
drum, the driving force is not transmitted

Page 4279 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 7A1-40 CONSTRUCTION AND FUNCTION
Reverse Gear in Position
The driving force from the input shaft is transmitted to the rear sun gear and reverse & high clutch drum. In the R
position, the revers

Page 4280 of 6020

ISUZU KB P190 2007 Workshop Repair Manual CONSTRUCTION AND FUNCTION 7A1-41
1st Gear in D, 3, 2 Position
The driving force from the input shaft is transmitted to the rear sun gear and reverse & high clutch drum. As
the low clutch is eng

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