2006 ACURA CSX Service Repair Manual

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Page 985 of 2893

ACURA CSX 2006 Service Repair Manual Î
R Position: Shifting to R position from P or N position
14-69
TORQUE
CONVERTER
2ND
ACCUMU-
LATOR2ND
CLUTCH
3RD
CLUTCH 4TH
CLUTCH5TH
CLUTCH
4TH
ACCUMULATOR
TORQUE
CONVERTER
CHECK
VALVE SHIFT
SOL

Î
R Position: Shifting to R position from P or N position
14-69
TORQUE
CONVERTER
2ND
ACCUMU-
LATOR2ND
CLUTCH
3RD
CLUTCH 4TH
CLUTCH5TH
CLUTCH
4TH
ACCUMULATOR
TORQUE
CONVERTER
CHECK
VALVE SHIFT
SOLENOID
VALVES
SHIFT
VALVE D
SHIFT
VALVE A
LOCK-UP
SHIFT
VALVE
LOCK-UP
CONTROL
VALVE
RELIEF VALVE
COOLER
CHECK
VALVE
ATF
COOLER REGULATOR
VALVE SERVO VALVE SERVO
CONTROL
VALVE
MANUAL VALVE ATF PUMP
3RD CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
1ST
CLUTCH
A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVES
3RD
ACCUMULATOR
1ST
ACCUMULATOR
5TH
ACCUMULATOR
2ND CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
SHIFT
VALVE
C
SHIFT
VALVE
B SHIFT
VALVE E
20
30 50
SB
1
SA
5B
5A
SC
5K 5B
5C
4
4
3B4
5A
5F SB
55 1
90
94
SE
94
91
96 93
7
55
90
95
90
93
93
99 192
1
95 HX
1B 3
3’ 4
5G
91
X X
X
X
X X
10
97
93 X
95
56 40
50
10
55’ 90 96
X 7 AX
AX
HX
4’’3A
3A
71A
3
3’
3C
5N 5E
3C
5L
5J
SA
40
X 5F
5H
10
1
55
1 56
4’’ 57
4
95
30 30
95
10 40
20
57 X
XX
X
5H 5G 5E5C
X
X 92 X
5N 55’
50 30 1A
5K
92 4’X
5J5L
55’
1
57
SD
XX
SE
X X 3
X
57
SE
1
20
XX 1B 20X
X
3A X X
X
X X
SC
SD
AX
3B
X 4’
X
X
AX
X
X
AX
X
X
A: OFF
B: ON
C: OFF
D: OFF
E: ON
A
B
C
IDLER
SHAFT
COUNTER-
SHAFT
SECONDARY
SHAFT MAINSHAFT IDLER GEAR
FINAL DRIVE
GEAR
When shifting to R, the PCM turns shift solenoid valves B and E ON, and A, C, and D are turned OFF. Shift solenoid
valve B pressure (SB) is applied to the right side of shift valve B, and shift valve B is moved to the left side. Shift
solenoid valve E pressure (SE) is applied to the left side of shift valve E, and shift valve E is moved to the right side.
Line pressure (1) changes to (3) at the manual valve, and flows to the servo valve via shift valve E. The servo valve is
moved to the reverse range position. Movement of shift valves B and E, and the servo valve creates 4th clutch
pressure line between the 4th clutch and A/T clutch pressure control solenoid valve A. 4th clutch pressure (40) is
appliedtothe4thclutch,andthe4thclutchisengagedgently.
NOTE: When used, ‘‘left’’ or ‘‘right’’ indicates direction on the hydraulic circuit.
(cont’d)
08/08/21 14:39:38 61SNR030_140_0071
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Page 986 of 2893

ACURA CSX 2006 Service Repair Manual Î

Hydraulic Flow (cont’d)
R Position: Driving in reverse gear
Reverse Inhibitor Control
14-70Automatic Transmission
System Description (cont’d)
TORQUE
CONVERTER
2ND
ACCUMU-
LATOR2ND
CLUTCH
3

Î

Hydraulic Flow (cont’d)
R Position: Driving in reverse gear
Reverse Inhibitor Control
14-70Automatic Transmission
System Description (cont’d)
TORQUE
CONVERTER
2ND
ACCUMU-
LATOR2ND
CLUTCH
3RD
CLUTCH 4TH
CLUTCH5TH
CLUTCH
4TH
ACCUMULATOR
TORQUE
CONVERTER
CHECK
VALVE SHIFT
SOLENOID
VALVES
SHIFT
VALVE D
SHIFT
VALVE A
LOCK-UP
SHIFT
VALVE
LOCK-UP
CONTROL
VALVE
RELIEF VALVE
COOLER
CHECK
VALVE
ATF
COOLER REGULATOR
VALVE SERVO VALVE SERVO
CONTROL
VALVE
MANUAL VALVE ATF PUMP
3RD CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
1ST
CLUTCH
A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVES
3RD
ACCUMULATOR
1ST
ACCUMULATOR
5TH
ACCUMULATOR
2ND CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
SHIFT
VALVE
C
SHIFT
VALVE
B SHIFT
VALVE E
20
30 50
SB
1
SA
5B
5A
SC
5K 5B
5C
4
4
3B4
5A
5F SB
55 1
90
94
SE
94
91
96 93
7
55
90
95
90
93
93
99 192
1
95 HX
1B 3
3’ 4
5G
91
X X
X
X
X X
10
97
93 X
95
56 40
50
10
55’ 90 96
X 7 AX
AX
HX
4’’3A
3A
71A
3
3’
3C
5N 5E
3C
5L
5J
SA
40
X 5F
5H
10
1
55
1 56
4’’ 57
4
95
30 30
95
10 40
20
57 X
XX
X
5H 5G 5E5C
X
X 92 X
5N 55’
50 30 1A
5K
92 4’X
5J5L
55’
1
57
SD
XX
SE
X X 3
X
57
SE
1
20
XX 1B 20X
X
3A X X
X
X X
SC
SD
AX
3B
X 4’
X
X
AX
X
X
AX
X
X
A: ON
B: ON
C: OFF
D: OFF
E: ON
A
B
C
IDLER
SHAFT
COUNTER-
SHAFT
SECONDARY
SHAFT MAINSHAFT IDLER GEAR
FINAL DRIVE
GEAR
After starting off in reverse gear, the PCM turns shift solenoid valve A ON, B and E remain ON, and C and D remain
OFF. Shift solenoid valve A pressure (SA) is applied to the right side of shift valve A to cover the A/T clutch pressure
control solenoid valve A pressure port, and to uncover the line pressure port leading to the 4th clutch creating full line
pressure. The 4th clutch is engaged securely with line pressure.
When R is selected while the vehicle is moving forward, the PCM commands shift solenoid valve A to turn OFF, and E
to remain OFF. Shift solenoid valve A pressure (SA) is not applied to shift valve A so that line pressure (3A) is not
applied to the servo valve. Also shift solenoid valve E pressure (SE) is not applied to shift valve E so that line pressure
(3’) is not applied to the servo valve. The servo valve cannot be shifted to the reverse position, and hydraulic pressure
is not applied to the 4th clutch from the servo valve for reverse; as a result, power is not transmitted to the reverse
direction.
NOTE: When used, ‘‘left’’ or ‘‘right’’ indicates direction on the hydraulic circuit.
08/08/21 14:39:39 61SNR030_140_0072
ProCarManuals.com
DYNOMITE -2009-

Page 987 of 2893

ACURA CSX 2006 Service Repair Manual Î
P Position
14-71
TORQUE
CONVERTER
2ND
ACCUMU-
LATOR2ND
CLUTCH
3RD
CLUTCH 4TH
CLUTCH5TH
CLUTCH
4TH
ACCUMULATOR
TORQUE
CONVERTER
CHECK
VALVE SHIFT
SOLENOID
VALVES
SHIFT
VALVE D
SHIFT
VALVE A
LOCK

Page 988 of 2893

ACURA CSX 2006 Service Repair Manual
(#

)
ã
ã
ã
ã
ã
ã
ã
ã
ã
ã
ã
Lock-up System
Torque Converter Clutch Lock-up ON (Engaging Torque Converter Clutch)
Torque Conv

(#'

)
ã
ã
ã
ã
ã
ã
ã
ã
ã
ã
ã
Lock-up System
Torque Converter Clutch Lock-up ON (Engaging Torque Converter Clutch)
Torque Converter Clutch Lock-up OFF (Disengaging Torque Converter Clutch)
14-72Automatic Transmission
System Description (cont’d)
Power flow
The power flows by way of: Engine
Drive plate
Torque converter cover
Torque converter clutch piston
Damper spring
Turbine
Mainshaft To ATF cooler
INLET OUTLET DAMPER SPRING
TURBINE
MAINSHAFT
TORQUE CONVERTER
CLUTCH PISTON
TORQUE
CONVERTER
COVER
To ATF coolerINLET
TURBINE
PUMP
TORQUE
CONVERTER
COVER
MAINSHAFT
Power flow
The power flows by way of: Engine
Drive plate
Torque converter cover
Pump
Turbine
Mainshaft
The lock-up mechanism of the torque converter clutch operates in D and S (2nd, 3rd, 4th, and 5th gears). The
pressurized fluid is drained from the back of the torque converter through a fluid passage, causing the torque
converter clutch piston to be held against the torque converter cover. As this takes place, the mainshaft rotates at the
same speed as the engine. Together with the hydraulic control, the PCM optimizes the timing and volume of the lock-
up mechanism. When shift solenoid valve E is turned on by the PCM, shift solenoid valve E pressure switches the lock-
up shift valve on. A/T clutch pressure control solenoid valve A and the lock-up control valve control the degree of lock-
up.
Fluid in the chamber between the torque converter cover and the torque converter clutch piston is drained off, and
fluid entering from the chamber between the pump and the stator exerts pressure through the torque converter clutch
piston against the torque converter cover. The torque converter clutch piston engages with the torque converter cover;
the torque converter clutch lock-up is ON, and the mainshaft rotates at the same speed as the engine.
Fluid entered from the chamber between the torque converter cover and the torque converter clutch piston passes
through the torque converter and goes out through the chambers between the turbine and the stator, and between the
pump and the stator. As a result, the torque converter clutch piston moves away from the torque converter cover, and
the torque converter lock-up clutch is released; the torque converter clutch lock-up is OFF.
08/08/21 14:39:41 61SNR030_140_0074
ProCarManuals.com
DYNOMITE -2009-

Page 989 of 2893

ACURA CSX 2006 Service Repair Manual Î
No Lock-up
14-73
TORQUE
CONVERTER
LOCK-UP
SHIFT VALVE
LOCK-UP
CONTROL
VALVE
RELIEF VALVE
ATF
COOLER COOLER
CHECK
VALVE
TORQUE
CONVERTER
CHECK VALVE
REGULATOR
VALVE ATF PUMP
A/T CLUTCH PRESSURE

Page 990 of 2893

ACURA CSX 2006 Service Repair Manual Î
Lock-up System (cont’d)
Partial Lock-up
14-74Automatic Transmission
System Description (cont’d)
TORQUE
CONVERTER
LOCK-UP
SHIFT VALVE
LOCK-UP
CONTROL
VALVE
RELIEF VALVE
ATF
COOLER COOLER
CH

Page 991 of 2893

ACURA CSX 2006 Service Repair Manual ÎFull Lock-up
14-75
TORQUE
CONVERTER
LOCK-UP
SHIFT VALVE
LOCK-UP
CONTROL
VALVE
RELIEF VALVE
ATF
COOLER COOLER
CHECK
VALVE
TORQUE
CONVERTER
CHECK VALVE
REGULATOR
VALVE ATF PUMP
A/T CLUTCH PRESSUR

Page 992 of 2893

ACURA CSX 2006 Service Repair Manual Î(#

)
Shift Lock System
14-76Automatic Transmission
System Description (cont’d)
P POSITION
LOCK PIN
SHIFT LOCK
STOP
SHIFT LOCK
SOLENOID PLUNGER
SH

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