Subaru IMPREZA GD 2007 Series Manual page 2704

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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 line pressure linear solenoid.
4) Measure the resistance between line pres-
sure linear solenoid connector and transmis-
sion ground.
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:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance 4 — 8 Ω?
Is resistance less than 1 Ω?
Is the resistance 1 MΩ or
more?
4AT(D)(diag)-65
Yes No
Go to step 5. Replace the con-
trol valve body.
<Ref. to 4AT-59,
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 ATF Repair the short
temperature warn- circuit of harness
ing light blinks, the between line pres-
circuit 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 trans-
mission.