Honda Civic Service Manual page 716

TOROUE CONVERTER
Full Lock-up
.
Lock-up Control Solenoid Valve A: ON
. Lock-up Control Solenoid Valve B: ON
o Linear Solenoid Pressure: High
W h e n t h e v e h i c l e s p e e d f u r t h e r i n c r e a s e s . t h e l i n e a r
s o l e n o i d p r e s s u r e i s i n c r e a s e d t o h i g h i n a c c o r d a n c e
with the linear solenoid controlled bv the PCM.
T h e l o c k - u p t i m i n g v a l v e o v e r c o m e s t h e s p r i n g f o r c e
and moves to the left side. Also, this valve closes the
fluid port leading to the left side of the lock-up control
Under this condition. the modulator pressure in the left
s i d e o f t h e l o c k - u p c o n t r o l v a l v e h a d a l r e a d y b e e n
released by the lock-up control solenoid valve B; the
lock-up control valve js moved to the left side. As this
t a k e s p l a c e , t h e t o r q u e c o n v e r t e r b a c k p r e s s u r e i s
released fully. causing the lock-up clutch to be engaged
f u l l y .
NOTE: When used,
"|eft" or "right" indicates direction
on the hvdraulic circuit.
MODULATOR PRESSURE
LINEAR SOLENOIO PRESSURE
{cont'd)
LOCK.UP CONTROL
SOLENOID VALVE
RELIEF VALVE
LOCK.UP TIMING
VALVE
'r
,-.r' cooLER RELTEF vALvE
ATF PUMP
14-37