Honda Accord 2008 Manual page 1075

3®
L o c k - u p C o n t r o l
S h i f t s o l e n o i d v a l v e D c o n t r o l s t h e h y d r a u l i c p r e s s u r e t o s w i t c h t h e l o c k - u p s h i f t v a l v e O N a n d O F F . W h e n t h e P C M
a c t u a t e s s h i f t s o l e n o i d v a l v e D a n d 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 C O N , a n d l o c k - u p s t a r t s . 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 C a p p l i e s a n d r e g u l a t e s h y d r a u l i c p r e s s u r e t o t h e l o c k - u p c o n t r o l v a l v e t o c o n t r o l t h e
a m o u n t o f l o c k - u p . T h e l o c k - u p m e c h a n i s m o p e r a t e s i n D ( 2 n d , 3 r d , 4 t h , a n d 5 t h g e a r s ) , a n d D 3 ( 2 n d a n d 3 r d g e a r s ) .
Engine Coolant
Temperature
Sensor Signal
Barometric Pressure
Sensor Signal
Transmission Range
Switch Signal
Accelerator Pedal
Position Sensor Signal
Throttle Position
Sensor Signal
Output Shaft
(Countershaft)
Speed Sensor Signal
Input Shaft
(Mainshaft)
Speed Sensor Signal
Engine RPM Signal
ATF Temperature
Sensor Signal
P C M
Actual
Driving K
K
Shift
Position
Engine Coolant
Temperature Control
Driving Shift
Position
Information
C o r r e c t i o n for
A T F T e m p e r a t u r e
S e n s o r D a t a
Shifting Position
Control
Gradient Control
by Magnitude
F a i l - s a f e C o n t r o l
Lock-up Control
Lock-up ON/OFF 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
( c o n t ' d )
14-53