Page 3945 of 4264
WORKSHOP MANUAL
TF SERIES
TRANSMISSION
JR405E MODEL
SECTION 7A
Page 3946 of 4264
Page 3947 of 4264

CONSTRUCTION AND FUNCTION 7A1-1
SECTION 7A1
CONSTRUCTION AND FUNCTION
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 UNIT (TCM) PERIPHERAL CIRCUIT ..............................7A1- 7
STRUCTURE AND FUNCTION OF COMPONENT ...........................................................7A1- 8
TORQUE CONVERTER (WITH LOCK-UP FUNCTION) ..................................................7A1- 8
OIL PUMP .................................................................................................................................7A1- 9
INPUT SHAFT ..........................................................................................................................7A1- 10
OUTPUT SHAFT ......................................................................................................................7A1- 10
GEAR SHIFTING MECHANISM ............................................................................................7A1- 10
CONTROL VALVE ...................................................................................................................7A1- 14
OIL PASSAGE .........................................................................................................................7A1- 19
PARKING FUNCTION .............................................................................................................7A1- 20
INHIBITOR SWITCH ...............................................................................................................7A1- 21
TURBINE SENSOR .................................................................................................................7A1- 22
SPEED SENSOR .....................................................................................................................7A1- 22
THROTTLE POSITION SENSOR (TPS) .............................................................................7A1- 23
ENGINE SPEED SENSOR (=TDC 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
Page 3948 of 4264

7A1-2 CONSTRUCTION AND FUNCTION
PAGE
LOCK-UP CONTROL ..............................................................................................................7A1- 30
DIRECT ELECTRIC SHIFT CONTROL (DESC) ................................................................7A1- 31
LEARNING CONTROL ............................................................................................... 7A1- 33
MAJOR INPUT/OUTPUT COMPONENT AND THEIR FUNCTIONS .......................... 7A1- 34
CONTROL CIRCUIT BLOCK DIAGRAM .................................................................... 7A1- 35
GEAR TRAIN (TRANSMISSION MECHANISM) OPERATION AND
HYDRAULIC CIRCUIT ................................................................................................. 7A1- 36
CONSTRUCTION AND OPERATION ......................................................................... 7A1- 36
COMPONENT NAME AND FUNCTION ...................................................................... 7A1- 36
COMPONENT AND THEIR OPERATING CONDITION ............................................. 7A1- 37
Page 3949 of 4264

CONSTRUCTION AND FUNCTION 7A1-3
DESCRIPTION
CONSTRUCTION
1 Converter Housing 6 Low Clutch 11 Oil Pump
2 Torque Converter 7 Low & Reverse Brake 12 Control Valve
3 High Clutch 8 Output Shaft 13 Low One-way Clutch
4 Reverse Clutch 9 Extension Housing 14 Parking Gear
5 2-4 Brake 10 Input Shaft
Figure 1. Construction of Automatic Transmission
The JR405E automatic transmission is electrically controlled by a microcomputer transmission control module
(TCM). There are four forward speeds and one reverse speed.
This JR405E automatic transmission employs a clutch pressure direct control system (Direct Electronic Shift
Control: DESC) using a duty cycle type solenoid, which ensures high shift quality.
This transmission also controls learning and constantly checks the time of each clutch and brake required for
the speed change to match this time with the target value for the optimum speed change.
The TCM will automatically select the most appropriate shift points and lock-up points depending on the
throttle opening angle, the vehicle speed and the vehicle load.
If any trouble arises in the vehicle sensor, throttle sensor, solenoid, etc., the fail-safe control function is
activated to keep the running performance.
Problems with the sensors, the solenoids can be quickly detected with the self diagnosis procedure described
in this manual.
The JR405E automatic transmission consists of the torque converter, the oil pump, the input shaft, the out put
shaft, the planetary gears and the control valve.
The gear train consists of two planetary gear sets and three multiple plate clutches in combination with two
multiple plate brakes and a one-way clutch.
2WD
4WD
Page 3950 of 4264
7A1-4 CONSTRUCTION AND FUNCTION
MAIN DATA AND SPECIFICATION
Model JR405E
Torque Converter Type Three Elements, One Stage & Two Phase Type
With Lock-up Function
Torque Converter Stall Torque Ratio 1.8
Name ATF DEXRON
Quantity 9.2L-9.6L AT F
Cooling System Water Cooled Type (Radiator)
1st 2.786
2nd 1.546
3rd 1.000
4th (Over Drive) 0.694
Gear Ratio
Reverse 2.273
Low Clutch L/C 7
High Clutch H/C 5
Reverse Clutch R/C 2Number of Disc Clutch
Low One-way Clutch L/O.C 1 Set
Low & Reverse
Brake L&R/B 6
Brake
2-4 Brake 2-4/B 5Number of Disc
Sun Gear 33
Pinion
Gear 21Front Planetary
Ring Gear 75
Sun Gear 42
Pinion
Gear 17
Planetary Gear Unit
Rear Planetary
Ring Gear 75Number of Teeth
Page 3951 of 4264
CONSTRUCTION AND FUNCTION 7A1-5
NUMBER PLATE LOCATION
JATCO CORP
UK000
1
No. 1X80652
23 4
1UK000 UK000 = 2WD
UK001 = 4WD
21 Production Year
1=2001
2=2002
3=2003
4=2004
5=2005
3X Product Month
19=JanuarySeptember
X=October
Y=November
Z=December
480652 Production Sequence Number
Serial Number Location
2WD:Back of the transmission rear mounting
4WD:Left side of the transmission rear mounting
Figure 2. Number Plate Location
4WD
2WD
Page 3952 of 4264
7A1-6 CONSTRUCTION AND FUNCTION
ELECTRONIC CONTROL COMPONENTS LOCATION
4WD Only 4WD 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
Select lever
Power Drive
, 3rd Start select 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
Throttle Position Sensor
Engine Control Module (ECM)
Data link connector