Subaru LEGACY 2006 Manual page 3444

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
4 CHECK LINE PRESSURE LINEAR SOLE-
NOID (IN TRANSMISSION).
1) Remove the transmission connector from
bracket.
2) Drain the automatic transmission fluid.
CAUTION:
Do not drain ATF until it cools down.
3) Remove the oil pan, and disconnect the
connector from control valve body.
4) Measure the resistance of line pressure lin-
ear solenoid connector terminals.
Connector & terminal
(AT11) No. 2 — No. 4:
5 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND LINE PRESSURE LIN-
EAR SOLENOID.
Measure the resistance of harness between
line pressure linear solenoid and transmission
connector.
Connector & terminal
(T4) No. 2 — (AT11) No. 4:
(T4) No. 1 — (AT11) No. 2:
6 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND LINE PRESSURE LIN-
EAR SOLENOID.
Measure the resistance of harness between
transmission connector and transmission
ground.
Connector & terminal
(T4) No. 1 — Transmission ground:
(T4) No. 2 — Transmission ground:
Check
Is the resistance between 4 —
8 Ω?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
4AT(diag)-58
Yes No
Go to step 5. Replace the con-
trol valve body.
<Ref. to 4AT-57,
Control Valve
Body.>
Go to step 6. Repair the open
circuit of harness
between line pres-
sure linear sole-
noid and
transmission con-
nector.
Even if the SPORT Repair the short
indicator light is circuit of harness
blinking, the cir- between line pres-
cuit is in normal sure linear sole-
condition at this noid and
time. A temporary transmission con-
poor contact of nector.
connector or har-
ness may be the
cause. Repair the
harness or con-
nector in line pres-
sure linear
solenoid and
transmission.