Subaru 2002 Impreza Service Manual page 234

ELECTROHYDRAULIC CONTROL SYSTEM
I
Automatic Transmission
0: LOCK-UP DUTY SOLENOID
This solenoid is located in the transmission hydraulic control valve. Its duty ratio is controlled by
signals from the TCM.
It
then controls the lock-up control valve to provide smooth engagement and
disengagement of the lock-up clutch.
NF0078
(1) Lock-up duty solenoid
r.
P: 2-4 BRAKE DUTY SOLENOID
This solenoid is located in the transmission hydraulic control valve.
Its duty ratio is controlled by
signals from the TCM.
It modulates the 2-4 brake pressure when the 2-4 brake is operated, reduc-
ing shifting shocks.
NF0079
(1 ) 2-4 brake duty solenoid
AT-1 2