Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1835
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
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
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
ATF
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
2
Number 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
5
Number of Disc
Sun Gear
33
Pinion
Gear
21
Front Planetary
Ring Gear
75
Sun Gear
42
Pinion
Gear
17
Planetary Gear Unit
Rear Planetary
Ring Gear
75
Number of Teeth
CONSTRUCTION AND FUNCTION 7A1-5
NUMBER PLATE LOCATION
JATCO CORP
UK000
1
No. 1X80652
2 3
4
1
→UK000
UK000 = 2WD
UK001 = 4WD
2
→1
Production Year
1=2001
2=2002
3=2003
4=2004
5=2005
3
→X Product
Month
1
∼9=January∼September
X=October
Y=November
Z=December
4
→80652 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
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