clutch MAZDA 6 2002 Suplement Repair Manual

AUTOMATIC TRANSAXLE
K2–5
K2
EC-AT Operation Chart
End Of Sie
Mode
P
R
R INH
1GR
2GR
3GR
4GR
5GR
1GR
2GR
3GR
4GR
5GR
: Operation
: Transmits the torque only when driving N
D
MGear position
Position/Renge
Engine braking effect
Low clutch
Low one-way clutch Low and reverse brake
Reduction brake
Reduction timing solenoid
Neutral shift solenoid Reduction one-way clutch
Shift solenoid A
Shift solenoid B
Shift solenoid C Direct clutch 2-4 brake
Solenoid valve
High clutch
Reveres clutch
A6E5714W009

AUTOMATIC TRANSAXLE
K2–7
K2
End Of Sie
1 Output gear
2 Low one-way clutch
3 Low and reverse brake
4Low clutch
52-4 brake
6 Reverse clutch
7 High clutch
8 Front planetary gear9 Rear planetary gear
10 Reduction planetary gear
11 Reduction one-way clutch
12 Direct clutch
13 Reduction brake
14 Idler gear
15 Reduction gear
16 Transfer

AUTOMATIC TRANSAXLE
K2–11
K2
End Of SieAUTOMATIC TRANSAXLE BLOCK DIAGRAMA6E571401030205
.
17 2-4 brake solenoid valve
18 High clutch solenoid valve
19 TCC solenoid valve
20 Shift solenoid A
21 Shift solenoid B
22 Shift solenoid C
23 Reduction timing solenoid valve24 Neutral shift solenoid valve
25 CAN_L
26 CAN_H
27 Instrument cluster
28 PCM
29 ABS HU/CM or DSC HU/CM
543
12
A6E5714W012
1 Input
2Output
3TCM
4PCM
ABS HU/CM or DSC HU/CM
TFT sensor
Input/turbine speed sensor
Intermediate sensor
VSS
TR switch
M range switch
Up switch
Down switch
Brake switch
Cruise control module5 Pressure control solenoid
2-4 brake solenoid valve
High clutch solenoid valve
TCC solenoid valve
Shift solenoid A
Shift solenoid B
Shift solenoid C
Reduction timing solenoid valve
Neutral shift solenoid valve
AT warning light

K2–12
AUTOMATIC TRANSAXLE
Electronic Control Item and Control
Component Description (Electronic Control)
Control item Contents
Shift control•Detects engine load condition and vehicle speed. Shifts to the best gear
position according to the programmed automatic shift diagram.
Line pressure control•Generates line pressure matching the engine load condition and driving
conditions. Optimizes line pressure for each shift. When the ATF
temperature is low, automatically optimizes line pressure for quick clutch
engagement.
Revers inhibition control•When the shift lever is shifted to R position while the vehicle is running
forward at approx. 30 km/h{19 mph} or more, the TCM turns the neutral
shift solenoid valve on and drains the low and reverse brake hydraulic
pressure. Due to this, the transaxle shifts to neutral.
Shift transient control•Adjusts transient hydraulic pressure according to engine load and
vehicle driving conditions when shifting using the pressure control
solenoid, 2-4 brake solenoid valve, the high clutch solenoid valve, and
each accumulator control valve.
•Temporarily lowers engine torque during shift (up and down) to improve
shift feel
•The lock timing for the reduction brake band is controlled by the control
of the reduction timing solenoid valve ON/OFF timing.
•The lock timing for the clutch brake is controlled by the control of shift
solenoid A, B, and C ON/OFF timing.
Feedback control•Corrects clutch engagement pressure and timing on drain side to
compensate for changes in engine performance and changes in
transaxle
TCC control•Controls TCC according to the programmed TCC points
N-D select control•When a driving range is selected from P/N, the fuel injection amount is
controlled to prevent fluctuation in engine speed.
Slope mode control•Changes the shift point to prevent frequent shifting up/down when
climbing hills
OBD system•Detects and/or memorizes failure of input/output part and transaxle
condition
Part name Function
Input system TR switch•Detects selector lever ranges/positions
Input/turbine speed sensor•Detects reverse clutch drum revolution speed
Intermediate sensor•Detects output gear revolution speed
Vehicle speedometer sensor•Detects parking gear revolution speed
TFT sensor•Detects the ATF temperature
Brake switch•Detects the brake pedal depressed
Cruise control module (in cruise actuator)•When the cruise control is in use, the signal detects when the
difference between the target speed and actual speed
exceeds specification
M range switch•Detects selector lever shifted M range
Up switch•Detects up shift in M range
Down switch•Detects down shift in M range
CAN signal Throttle position signal•Input throttle opening angle from PCM
Engine torque signal
(without torque down)•Input engine torque from PCM
Engine torque signal (with
torque down)•Input engine torque from PCM
Engine torque signal (loss
torque)•Input engine loss torque from PCM
Torque reduced signal•Detects signals indicating torque down availability
Engine coolant
temperature signal•Input engine coolant temperature from PCM
Engine speed signal•Input engine speed from PCM
Battery OFF signal•Detect negative battery cable disconnected
4 wheel speed signal•Input wheel speed from ABS HU/CM or DSC HU/CM

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

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

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

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

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

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