Honda 2004 Odyssey Service Manual page 673

Automatic Transmission
System Description (cont'd)
Hydraulic Flow (cont'd)
R Position: Driving in reverse gear
The PCM turns shift solenoid valve C OFF. Shift solenoid valve A remains OFF, and B remains ON. Shift solenoid valve
C is turned OFF, and SH C pressure (SC) is applied to the right side of the reverse CPC valve. Then the reverse CPC
valve moves to the left side, creating full line pressure. Line pressure to the 4th clutch is the same as in shifting to the
R position, and 4th clutch pressure increases. The 4th clutch is engaged with line pressure mode.
Reverse Inhibitor Control
When the R position is selected while the vehicle is moving forward at speeds over 6 mph (10 km/h), the PCM outputs
to turn the shift solenoid valve C ON; shift solenoid valve A remains OFF, and shift solenoid valve B remains ON. The
reverse CPC valve is moved to right side and cover the port to stop the line pressure (3') to the servo valve. The line
pressure (3') is not applied to the servo valve, and the 4th clutch pressure (40) is not applied to the 4th clutch, as a
result, power is not transmitted to the reverse direction.
NOTE: When used, ''left'' or ''right'' indicates direction on the hydraulic circuit.
TORQUE
CONVERTER
90
94
TORQUE CONVERTER
CLUTCH SOLENOID
VALVE
LOCK-UP TIMING
VALVE
90 91
90' 91'
X X X
LA 94 91' 91 6
96 92 93
LOCK-UP SHIFT
VALVE
90 90
90
93 92
X
LOCK-UP CONTROL
93
X
VALVE
TORQUE
CONVERTER
CHECK VALVE
COOLER
CHECK VALVE
93
X
X
RELIEF VALVE
99
ATF COOLER
14-60
1ST ACCUMULATOR
1ST CLUTCH
10
20
10
SHIFT VALVE E
SHIFT VALVE B
5F'
5K' 4 4'
X
4'
30 10 5F' 50
91
5F 5G
9 5E H3X
X
H3X
5E 5F 5K'
5A 58 5A
5A
X
X
X
SHIFT
VALVE
A
58
9
58 97
MAINSHAFT
COUNTER-
SHAFT
AX
MX
95'
92 2 95
LUBRICATION
CHECK VALVE
REGULATOR VALVE
3RD
2ND
2ND CLUTCH
ACCUMULATOR
ACCUMULATOR
2ND CLUTCH
PRESSURE
SWITCH
20
SB
5C
5K
SHIFT VALVE C
H7X
5C 48
5K 20 5G 5A 4A 58
57 58 56 4
M1X
X 5J
5H
X
CPC VALVE
A
57
5J 5H
25 41
H6X
SHIFT VALVE D
40
25 41
4
95' 1 3
MANUAL VALVE
AX
3 56 SC
4
SECONDARY
SHAFT
3 3'
95'
REVERSE
CPC VALVE
X 3'
SERVO VALVE
ATF PUMP
3RD CLUTCH 4TH CLUTCH
3RD CLUTCH
PRESSURE
SWITCH
30 40
40
30
CPC
AX
VALVE B
4B
6
X 4 57
X
50 SC
X
M2X
HX
HX HX
6
X
1
MODULATOR
VALVE
3 10 9 4
SERVO CONTROL
VALVE
4 4'
X
4'
X
4
3
4TH ACCUMULATOR
SHIFT SOLENOID
VALVE B
SHIFT SOLENOID
VALVE C
SHIFT SOLENOID
VALVE A
X
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE B
57
HX AX
6
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE A
6
56