Subaru XT 1988 Service Manual page 563

AUTOMATIC TRANSMISSION AND DIFFERENTIAL
Clutch
actuating
AfT
Clutch fluid
Solenoid
Shift clutches
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co
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>
m
m
>
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, 0 0 ;
L_~~[joId2J
Sensors
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.
,------------,
.
• Throttle opening
I
I
~' Vehlcl~
• Vehicle speed
I I
revolution
I
I~Mor
AfT
control
<~======~
I
unit
Shift command Determination of optimum
signals gear position (incl. selection
of shift pattern)
1 st
2nd
3rd
4th
Solenoid 1
0
X
X
0
I
I
L __________
J
Solenoid 2
0
0
X
X
CD
Control unit activates both solenoids 1 and 2 in response
to throttle and vehicle speed signals.
CV
Shift valve moves in response to solenoid operation,
supplying/interrupting clutch pressure to the line.
®
Gears are shifted by ON-OFF operation of both solenoids
as indicated in Table above.
*When clutch pressure is supplied to the line.
Fig. 69 Shift valve operation system
49
3-2
L3·930