Honda Odyssey 2004. Manual — part 163
*05
*06
Hydraulic Controls (cont’d)
Servo Body
Accumulator Body
14-46
Automatic Transmission
System Description (cont’d)
CPC VALVE A
CPC VALVE B
SERVO VALVE
SHIFT VALVE A
SHIFT VALVE B
SERVO BODY
4TH ACCUMULATOR PISTON
3RD ACCUMULATOR PISTON
SERVO BODY
ACCUMULATOR BODY
1ST ACCUMULATOR PISTON
2ND ACCUMULATOR PISTON
LUBRICATION CHECK VALVE
The servo body is on the main valve body. It contains the servo valve, the shift valve A, the shift valve B, the CPC
valves A and B, and the 3rd and the 4th accumulators.
The accumulator body is on the torque converter housing, next to the main valve body. It contains the 1st and the 2nd
accumulators, and the lubrication check valve.
03/07/29 09:29:34 61S0X050_140_0049
S0X4AA0E10410800000CAAT05
Hydraulic Flow
Distribution of Hydraulic Pressure
14-47
As the engine turns, the ATF pump starts to operate. Automatic transmission fluid (ATF) is drawn through the ATF
strainer (filter) and discharged into the hydraulic circuit. Then, ATF flowing from the ATF pump becomes line pressure
that’s regulated by the regulator valve. Torque converter pressure from the regulator valve enters the torque converter
through the lock-up shift valve and it is discharged from the torque converter. The torque converter check valve
prevents torque converter pressure from rising.
The PCM controls the shift solenoid valves ON and OFF, and the shift solenoid valves control shift solenoid pressure
to the shift valves. Applying shift control solenoid pressure to the shift valves moves the position of the shift valve,
and switches the port of hydraulic pressure. The PCM also controls A/T clutch pressure control solenoid valves A and
B. The A/T clutch pressure control solenoid valves regulate the A/T clutch pressure control solenoid pressure and
apply the A/T clutch pressure control solenoid pressure to CPC valves A and B.
When shifting between upper gear and lower gear, the clutch is engaged by pressure from the CPC pressure mode.
The PCM controls one of the shift solenoid valves to move the position of the shift valve. This movement switches the
port of the CPC and line pressure. Line pressure is then applied to the clutch, and the CPC pressure is intercepted.
Engaging the clutch with line pressure happens after CPC pressure mode has completed.
Hydraulic pressure at the ports is as follows:
PORT
NO.
DESCRIPTION OF
PRESSURE
PORT
NO.
DESCRIPTION OF
PRESSURE
PORT
NO.
DESCRIPTION OF
PRESSURE
1
LINE
5H
CPC B or LINE
57
LS B
3
LINE
5J
CPC B or LINE
58
LS A or LS B
3’
LINE
5K
CPC B or LINE
90
TORQUE CONVERTER
3’’
LINE
5K’
CPC B or LINE
90’
TORQUE CONVERTER
4
LINE
6
MODULATE
91
TORQUE CONVERTER
4’
LINE
SA
SH A
91’
TORQUE CONVERTER
4’’
LINE
SB
SH B
92
TORQUE CONVERTER
4A
CPC A
SC
SH C
93
ATF COOLER
4B
CPC B
LA
LC
94
TORQUE CONVERTER
5A
CPC A
9
LINE
95
LUBRICATION
5D
CPC B
10
1ST CLUTCH
95’
LUBRICATION
5B
CPC A or LINE
20
2ND CLUTCH
96
TORQUE CONVERTER
5E
CPC A or LINE
25
LINE
97
TORQUE CONVERTER
5F
CPC A or LINE
30
3RD CLUTCH
99
SUCTION
5F’
CPC A or LINE
40
4TH CLUTCH
X
DRAIN
5C
CPC B or LINE
41
4TH CLUTCH
HX
HIGH POSITION DRAIN
5G
CPC B or LINE
56
LS A
AX
AIR DRAIN
NOTE:
• CPC: Clutch Pressure Control pressure
• SH: Shift Solenoid pressure
• LS: A/T Clutch Pressure Control Solenoid pressure
• LC: Torque Converter Clutch Solenoid pressure
(cont’d)
03/07/29 09:29:34 61S0X050_140_0050
04
″
″
″
″
″
Hydraulic Flow (cont’d)
N Position
14-48
Automatic Transmission
System Description (cont’d)
SHIFT SOLENOID
VALVE B
SHIFT SOLENOID
VALVE C
SHIFT SOLENOID
VALVE A
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE B
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE A
SHIFT VALVE C
CPC
VALVE B
SHIFT VALVE B
SHIFT VALVE E
CPC VALVE
A
REGULATOR VALVE
RELIEF VALVE
ATF COOLER
COOLER
CHECK VALVE
ATF PUMP
REVERSE
CPC VALVE
SERVO VALVE
TORQUE
CONVERTER
CHECK VALVE
TORQUE
CONVERTER
3RD CLUTCH
4TH CLUTCH
4TH ACCUMULATOR
1ST ACCUMULATOR
1ST CLUTCH
2ND CLUTCH
2ND CLUTCH
PRESSURE
SWITCH
2ND
ACCUMULATOR
3RD
ACCUMULATOR
3RD CLUTCH
PRESSURE
SWITCH
LUBRICATION
CHECK VALVE
SHIFT
VALVE
A
SHIFT VALVE D
MANUAL VALVE
SERVO CONTROL
VALVE
MODULATOR
VALVE
LOCK-UP CONTROL
VALVE
LOCK-UP SHIFT
VALVE
LOCK-UP TIMING
VALVE
TORQUE CONVERTER
CLUTCH SOLENOID
VALVE
94
90
91
10
20
10
20
30
30
40
40
X X X
90
X
90’
91’
58
91
LA
94
91’
91
6
96
92
93
X
90
93
90
90
58
97
X
X
92
2
95
99
93
X
95’
95’
AX
MX
4’
4
X
3’
3
3
3’
4
3
AX
56
SC
95’
4
1
25
3
41
40
3
3
10
9
4
X
4
4’
1
6
X
X
4A
56
4
AX
9
25
41
5J
5H
57
5E
5F
5K’
5K
5G
20
X
5A
5A
58
X
X
5J
5A
5H
6
HX
AX
56
HX
AX
57
6
X
X
X
6
HX
HX
M2X
4
M1X
AX
X
4
57
57 58 56
5A 4A 58
5C
48 50
SC
4B
5K’
4
4’
X
5F’
4’
30
10
5F’
50
5C
5E
5F
X
5G
5K
SB
9
H3X
H3X
COUNTER-
SHAFT
MAINSHAFT
H7X
H6X
X
X
93
92
SECONDARY
SHAFT
The PCM controls the shift solenoid valves. The conditions of the shift solenoid valve and positions of the shift valve
are as follows:
• The shift solenoid valve A is turned OFF, and the shift valve A moves to the left side.
• The shift solenoid valve B is turned ON, and the shift valve B stays on the right side.
• The shift solenoid valve C is turned OFF, and the shift valve C stays on the left side.
Line pressure (1) passes through the manual valve and stops at shift valve D. Line pressure (1) also flows to the
modulator valve, and becomes modulator pressure (6). Modulator pressure (6) flows to the shift solenoid valves and
the A/T clutch pressure control solenoid valves. Under this condition, hydraulic pressure is not applied to the clutches.
NOTE: When used, ‘‘left’’ or ‘‘right’’ indicates direction on the hydraulic circuit.
03/07/29 09:30:24 61S0X050_140_0051
05
″
″
″
″
″
D4 Position: 1st gear shifting from the N position
14-49
SHIFT SOLENOID
VALVE B
SHIFT SOLENOID
VALVE C
SHIFT SOLENOID
VALVE A
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE B
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE A
SHIFT VALVE C
CPC
VALVE B
SHIFT VALVE B
SHIFT VALVE E
CPC VALVE
A
REGULATOR VALVE
RELIEF VALVE
ATF COOLER
COOLER
CHECK VALVE
ATF PUMP
REVERSE
CPC VALVE
SERVO VALVE
TORQUE
CONVERTER
CHECK VALVE
TORQUE
CONVERTER
3RD CLUTCH
4TH CLUTCH
4TH ACCUMULATOR
1ST ACCUMULATOR
1ST CLUTCH
2ND CLUTCH
2ND CLUTCH
PRESSURE
SWITCH
2ND
ACCUMULATOR
3RD
ACCUMULATOR
3RD CLUTCH
PRESSURE
SWITCH
LUBRICATION
CHECK VALVE
SHIFT
VALVE
A
SHIFT VALVE D
MANUAL VALVE
SERVO CONTROL
VALVE
MODULATOR
VALVE
LOCK-UP CONTROL
VALVE
LOCK-UP SHIFT
VALVE
LOCK-UP TIMING
VALVE
TORQUE CONVERTER
CLUTCH SOLENOID
VALVE
94
90
91
10
20
10
20
30
30
40
40
X X X
90
X
90’
91’
58
91
LA
94
91’
91
6
96
92
93
X
90
93
90
90
58
97
X
X
92
2
95
99
93
X
95’
95’
AX
MX
4’
4
X
3’
3
3
3’
4
3
AX
56
SC
95’
4
1
25
3
41
40
3
3
10
9
4
X
4
4’
1
6
X
X
4A
56
4
AX
9
25
41
5J
5H
57
5E
5F
5K’
5K
5G
20
X
5A
5A
58
X
X
5J
5A
5H
6
HX
AX
56
HX
AX
57
6
X
X
X
6
HX
HX
M2X
4
M1X
AX
X
4
57
57 58 56
5A 4A 58
5C 48 50
SC
4B
5K’
4
4’
X
5F’
4’
30
10
5F’
50
5C
5E
5F
X
5G
5K
SB
9
H3X
H3X
COUNTER-
SHAFT
MAINSHAFT
H7X
H6X
X
X
93
92
SECONDARY
SHAFT
The PCM turns the shift solenoid valves A and C ON when shifting to the D4 position from N. Shift solenoid valve B
keeps ON. Shift solenoid valve C is turned ON, and SH C pressure (SC) in the right side of the shift valve C is released,
then the shift valve C is moved to the right side. Shift solenoid valve A is turned ON, and SH A pressure (SA) in the left
side of the shift valve A is released, then shift valve A is moved to the right side. The A/T clutch pressure control
solenoid valve A regulates LS A pressure (56) and applies it to CPC valve A. Line pressure (1) becomes line pressure
(4) at the manual valve, and flows to shift valve C and CPC valve A. Line pressure (4) becomes CPC A pressure (4A) and
passes through shift valve C, A, and B, then CPC A pressure (4A) becomes 1st clutch pressure (10) at shift valve B. 1st
clutch pressure (10) is applied to the 1st clutch, then the 1st clutch is engaged with pressure of the CPC pressure mode.
Line pressure (4) passes through shift valve A and B, then stops at shift valve B.
NOTE: When used, ‘‘left’’ or ‘‘right’’ indicates direction on the hydraulic circuit.
(cont’d)
03/07/29 09:30:26 61S0X050_140_0052
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