Honda ACCORD HYBRID 2005 Service Manual page 879

Lock-up Control
The shift solenoid valve D controls the hydraulic pressure to switch the lock-up shift valve and lock-up ON and OFF.
The PCM actuates the shift solenoid valve D and the A/T clutch pressure control solenoid valve C to start lock-up. The
A/T clutch pressure control solenoid valve C regulates hydraulic pressure to the lock-up control valve to control the
v o l u m e of the lock-up.
The lock-up mechanism operates in the D position (2nd, 3rd, 4th, and 5th), and in the D3 position (2nd and 3rd).
Engine Coolant
Temperature
S e n s o r Signal
Barometric Pressure
S e n s o r Signal
T r a n s m i s s i o n Range
S w i t c h Signal
Accelerator Pedal
Position S e n s o r Signal
Throttle Position
S e n s o r Signal (DBW)
Output Shaft
(Countershaft)
S p e e d S e n s o r Signal
Input Shaft
(Mainshaft)
S p e e d S e n s o r Signal
Engine R P M Signal
A T F Temperature
S e n s o r Signal
P C M
Actual
driving I X
shift ^
position
Engine Coolant
Temperature control
Shifting position
control
Gradient control
by magnitude
Fail-safe control
Driving
shift
position
information
Correction of
ATF
temperature
sensor data
Lock-up control
Lock-up O N / O F F
control
Lock-up condition
control
Lock-up condition
learning control
Master Target
of Controlling
Current
Current
feedback
Shift Solenoid
Valve D
A / T Clutch
Pressure Control
Solenoid Valve C
(cont'd)
14-43