Page 428 of 909

AUTOMATIC TRANSAXLE
K2–13
K2
End Of SieAUTOMATIC TRANSAXLE DEVICE RELATIONSHIP CHARTA6E571401030206
Output system ON/OFF
typeShift solenoid A•Switches ON and OFF based on electric signals from the
TCM, changes hydraulic circuit to control shifting
Shift solenoid B•Switches ON and OFF based on electric signals from the
TCM, changes hydraulic circuit to control shifting
Shift solenoid C•Switches ON and OFF based on electric signals from the
TCM, changes hydraulic circuit to control shifting
Reduction timing solenoid
valve•Switches ON and OFF based on electric signals from the
TCM, changes hydraulic circuit to control shifting
Neutral shift solenoid valve•Switches ON and OFF based on electric signals from the
TCM, changes hydraulic circuit to control shifting
Duty type
Pressure control solenoid•Switches ON and OFF based on electric signal (duty signals)
from the TCM adjusts line pressure to match driving
conditions
2-4 brake solenoid valve•Switches ON and OFF based on electric signal (duty signals)
from the TCM adjusts line pressure to match driving
conditions
High clutch solenoid valve•Switch ON and OFF based on electric signal (duty signals)
from the TCM adjusts line pressure to match driving
conditions
TCC solenoid valve•Switch ON and OFF based on electric signal (duty signals)
from the TCM to control TCC
CAN signal Reduce torque signal•Sends signals to the PCM during shifting
Range signal•Output transaxle load condition to PCM
Turbine speed signal•Output turbine speed to PCM
ATF temperature signal•Output ATF high temperature signal to PCM
TCC signal•Output TCC signal to PCM
Racing select signal•Requests fuel cut when selector lever is shifted during racing
MIL indicate request signal•Requests MIL illumination when failure is detected by
diagnosis function
AT warning light request
signal•Requests AT warning light indication when failure is detected
by diagnosis function for ATX Part name Function
ComponentControl item
Shift
controlLine
pressure
controlReverse
inhibition
controlShift
transient
controlFeedbac
k controlTCC
controlN-D
select
controlSlope
mode
controlOBD
system
Input
TR switch XXXXXXX X
Input/turbine
speed sensorX XXXXXX
Intermediate
sensorXXX X
Vehicle
speedometer
sensorXXXXXXXXX
TFT sensor XX XXXX X
Brake switch X X X
Cruise control
module (4GR
inhibit signal)XX
M range switch X X
Up switch X X
Down switch X X
Page 430 of 909
AUTOMATIC TRANSAXLE
K2–15
K2
X : Available
End Of SiePOWERTRAIN DESCRIPTIONA6E571401030207Outline
•In the powertrain system, the hydraulic pressure transported by the control valve operates the clutch, and
brake, and the planetary gear changes the gear ratio according to the driving conditions.
Structure
•The powertrain system consists of seven pairs of clutches, brake, brake band, two pairs of one-way clutches,
and simple type planetary gears.
Duty
typePressure
control
solenoidXX XX X
2-4 brake
solenoid
valveXX XX X
High
clutch
solenoid
valveXX XX X
TCC
solenoid
valveXXX
CAN
signalReduce
torque
signalXXX
Range
signalX
Turbine
speed
signalX
ATF
temperatu
re signalX
TCC
signalXX
Racing
select
signalX
MIL
indicate
request
signalX
AT
warning
light
request
signalX ComponentControl item
Shift
controlLine
pressure
controlReverse
inhibition
controlShift
transient
controlFeedbac
k controlTCC
controlN-D
select
controlSlope
mode
controlOBD
system
Page 431 of 909
K2–16
AUTOMATIC TRANSAXLE
.
9
87
54
3
1
2
10
19
18
17
15
16
14
131112
20
21
6
A6E5714W071
1 Rear pinion gear
2 Rear internal gear
3 Low one-way clutch
4 Low and reverse brake
5 Low clutch
6 2-4 brake
7 Front internal gear
8 Reverse clutch
9High clutch
10 Front pinion gear
11 Front sun gear12 Rear sun gear
13 Reduction brake
14 Direct clutch
15 Reduction one-way clutch
16 Idler gear
17 Reduction gear
18 Reduction sun gear
19 Reduction pinion gear
20 Reduction internal gear
21 Output gear
Page 432 of 909

AUTOMATIC TRANSAXLE
K2–17
K2
Operation
Note
•All rotation are viewed from the side cover.
Component description
Gear Position and Operation of Featured Parts
Component Function
Low clutch•Transmits rotation of low clutch drum to rear internal gear
•Operates in 1GR, 2GR, or 3GR position
2-4 brake•Prevents rotation of front sun gear
•Operates in 2GR, 4GR, or 5GR position
High clutch•Transmits rotation of high clutch drum to front planetary carrier
•Operates in 3GR, 4GR, or 5GR position
Reverse clutch•Transmits rotation of reverse clutch drum to front sun gear
•Operates when vehicle is reversing
Reduction brake•Prevents rotation of direct clutch drum and prevents rotation of reduction sun gear
Low and reverse brake•Prevents rotation of low and reverse brake hub
Direct clutch•Transmits rotation of reduction planetary carrier to reduction sun gear
•Operates in 5GR position
Low one-way clutch•Locks clockwise rotation of front planetary carrier
Reduction one-way clutch•Locks counter clockwise rotation of reduction sun gear
Range
P
R
N
D1GR
2GR
3GR
4GR
5GR
1GR
2GR
3GR
4GR
5GR
: TCC or engine braking is availableMGear positionGear ratioTCC operation
Engine brake Shift
2.970
3.801
2.131
1.364
0.935
0.685
3.801
2.131
1.364
0.935
0.685
A6E5714W013
Page 435 of 909
K2–20
AUTOMATIC TRANSAXLE
1GR (M range)
LOW ONE-WAY
CLUTCH LOW
CLUTCH
LOW AND
REVERSE
BRAKE
2-4
BRAKE
REVERSE
CLUTCH
REAR
SUN
GEAR HIGH
CLUTCH
FRONT
PINION
GEAR
FRONT
INTERNAL
GEAR
FRONT
SUN
GEAR
REDUCTION
ONE-WAY
CLUTCH
REDUCTION
BRAKEREDUCTION
PINION
GEARREDUCTION
GEAR REAR
PINION
GEAR
REAR
INTERNAL
GEAR
REDUCTION
SUN
GEARREDUCTION
INTERNAL
GEAR
INPUT
COMPONENT OF FORCE
OUTPUT
OUTPUT (INTERMEDIATE)
FIXED
PINION IDLER
GEAR
DIRECT
CLUTCHOUTPUT
GEAR
A6E5714W016
Page 436 of 909
AUTOMATIC TRANSAXLE
K2–21
K2
LOW ONE-WAY
CLUTCH LOW CLUTCHLOW AND
REVERSE BRAKE
2-4 BRAKE
REVERSE
CLUTCH
REAR SUN GEAR HIGH CLUTCH
FRONT
PINION
GEARFRONT
INTERNAL
GEAR
FRONT
SUN
GEAR
REDUCTION
ONE-WAY
CLUTCHREDUCTION
BRAKE
REDUCTION
PINION GEAR
REDUCTION
GEAR REAR PINION
GEAR REAR INTERNAL
GEAR
REDUCTION SUN
GEAR REDUCTION
INTERNAL GEAR
INPUT
COMPONENT OF FORCE
OUTPUT
OUTPUT (INTERMEDIATE)
FIXED
PINIONIDLER
GEAR DIRECT
CLUTCHOUTPUT GEAR
A6E5714W017
Page 455 of 909
K2–40
AUTOMATIC TRANSAXLE
TORQUE CONVERTER DESCRIPTIONA6E571419100201Outline
•The JA5AX-EL uses a three-element, single-gear, two-phase torque converter with torque converter clutch
(TCC) mechanism.
•The torque converter efficiently matches the output characteristic of AJ engine.
•By matching the output characteristics of the engine in order to optimize the configuration of the impellers, the
torque converter increases the capacity coefficient in the practical range, thereby improving drivability and fuel
economy.
•The TCC mechanism under certain conditions transmits the drive force by automatically connecting the pump
impeller with the turbine runner as opposed to using fluid. Therefore it prevents the torque converter from
slipping.
End Of Sie
AMU0517S014
Page 457 of 909
K2–42
AUTOMATIC TRANSAXLE
CENTRIFUGAL BALANCE CLUTCH DESCRIPTIONA6E571401030208Function
•The centrifugal balance clutch, which replaces the conventional piston check ball, cancels centrifugal oil
pressure generated during clutch drum rotation to prevent the clutch drag-engagement and to stabilize piston
pressure during full rotation.
Construction/Operation
•Centrifugal balance clutch chambers are installed opposite the clutch chambers in the low and high clutches.
The centrifugal balance clutch chambers are constantly filled with ATF from the exclusive hydraulic passage of
the oil pump.
AMU0517S018