Acura 2002 RSX Service Manual page 596

Automatic Transmission
System Description (cont'dl
Lock-up System {cont'd}
Partial Lock.up
As the speed of the vehicle reaches the prescribed value, shift solenoid valve E is turned ON by the pCM, and shift
solenoid valve E pressu re {SE) is applied to the right side of the lock-up shift valve. The lock-up shift valve rs moved to
the left side to switch the torque converter pressure (9'l) port which goes to the right side of rhe torque converter, and
the port of torque converter pressure (94) releasing from the left side of the torque converter. Torque convener
pressure (91) flows to the right side of the torque converter to engage the torque converter clutch. The pCM
also
controls the A'lT clutch pressure control solenoid valve A to regulate A/T clutch pressure control solenoid valve A
pressure (55) applies to the lock-up shift valve and lock-up control valve. The position of the lock,up control vatve
depends on A,rT clutch pressure control solenoid valve A pressure (55) and torque converter pressure released from
the torque convener. The lock-up control valve controls the amount of the torque converter clutch lock,up until fluid
between the clutch piston and torque converter cover is released fully; the torque converter clutch is in panial lock-up
c o n d i t i o n .
NOTE: When used, "1eft" or "right" indicates directjon on the hvdraulic circuit.
CONIROL SOL€NOIO VALVE A
<- SHIfT VALVE A rnd D
e I--t
FEGULATORVATVE
14-64