Subaru IMPREZA GD 2007 Series Manual page 2710

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
6 CHECK 2-4 BRAKE DUTY SOLENOID (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 2-4 brake duty solenoid.
4) Measure the resistance of harness between
2-4 brake duty solenoid connector and trans-
mission ground.
Connector & terminal
(AT12) No. 6 — Transmission ground:
7 CHECK HARNESS CONNECTOR BETWEEN
2-4 BRAKE DUTY SOLENOID AND TRANS-
MISSION.
Measure the resistance of harness between 2-4
brake duty solenoid and transmission connec-
tor.
Connector & terminal
(T4) No. 3 — (AT12) No. 6:
8 CHECK HARNESS CONNECTOR BETWEEN
2-4 BRAKE DUTY SOLENOID AND TRANS-
MISSION.
Measure the resistance of harness between
transmission connector and transmission
ground.
Connector & terminal
(T4) No. 3 — Transmission ground:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance 2.0 — 6.0 Ω? Go to step 7.
Is resistance less than 1 Ω?
Is the resistance 1 MΩ or
more?
4AT(D)(diag)-71
Yes No
Replace the con-
trol valve body.
<Ref. to 4AT-59,
Control Valve
Body.>
Go to step 8.
Repair the open
circuit of harness
between 2-4 brake
duty solenoid and
transmission con-
nector.
Even if the ATF Repair the short
temperature warn- circuit of harness
ing light blinks, the between 2-4 brake
circuit is in normal duty solenoid and
condition at this transmission con-
time. A temporary nector.
poor contact of
connector or har-
ness may be the
cause. Repair the
harness or con-
nector in high
clutch duty sole-
noid and transmis-
sion.