Honda ACCORD HYBRID 2005 Service Manual page 895

D and D3 Positions: Shifting between 2nd gear and 3rd gear
As the speed of the vehicle reaches the p r o g r a m m e d value, the PCM turns shift solenoid valve C O N , and shift
solenoid valve C covers the port of shift solenoid valve C pressure (SC) t o the shift valve C. Shift solenoid valves A and
B keep O N . The shift valve C is m o v e d t o the left side to switch the port of line pressure (4) and CPC A pressure (4A)
leading to the 2nd clutch. The shift valve C also uncovers the port of CPC B pressure (4B) leading t o the 3rd clutch. The
PCM controls A/T clutch pressure control solenoid valves A and B. A/T clutch pressure control solenoid valve A
pressure (56) is applied t o the CPC valve A, and A/T clutch pressure control solenoid valve B pressure (57) is applied to
the CPC valve B. The CPC valve B regulates line pressure ( 4 " ) , and line pressure (4") becomes CPC B pressure (4B).
CPC B pressure f l o w s t o the shift valve A via the shift valves C and B, and becomes 3rd clutch pressure (30) at the shift
valve A. The 2nd clutch pressure (20) is changed t o CPC pressure m o d e , and the 3rd clutch is engaged w i t h the CPC
pressure mode. The 1st clutch is also engaged, but no power is t r a n s m i t t e d because of the one-way clutch.
NOTE: W h e n used, " l e f t " or " r i g h t " indicates direction on the hydraulic circuit.
1 S T I1T-HO
U
LD
C
CLUTCH 2 N D 2 N D C L U T C H
2
N D 3 R D C L U T C H
-I'TiTnt
A C C U M U L A T O R ,
1 L I
A C C U M U L A T O R T B A ^ M I S S I O N _
C
^
T C H
T R A N S M I S S I O N C L U T C H
^ T O R Q U E
/JTTTIS
/
— I 1 H I H I
F "
/ I . ,
D O C C C . I D c ' r n r y u u - T i r T r r ^ N
no^cor
M
4 T H C L U T C H 5 T H 4 T H
J T I U
T R A N S M I S S I O N C L U T C H C L U T C H
A C C U M U L A T O R 4 T H F L U I D ' ^ ' " " ^
rrri ^ "
A C C ^ U L A T O R " ^ S U R E
, S H I F T S O L E N O I D
1 V A L V E B :
O N ( C L O S E )
. S H I F T S O L E N O I D
I V A L V E C :
O N ( C L O S E )
S H I F T S O L E N O I D
II V A L V E A :
O N ( O P E N )
A / T C L U T C H
P R E S S U R E C O N T R O L
S O L E N O I D V A L V E S
(cont'd)
14-59