Subaru Legacy 2003 Service Manual page 2375

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
11 CHECK LOCK-UP DUTY SOLENOID (IN
TRANSMISSION).
1) Remove transmission connector from
bracket.
2) Drain automatic transmission fluid.
CAUTION:
Do not drain the automatic transmission flu-
id until it cools down.
3) Remove oil pan, and disconnect connector
from lock-up duty solenoid.
4) Measure resistance between lock-up duty
solenoid connector and transmission
ground.
Terminal
No. 1 — Transmission ground:
Is the measured value within the specified
range?
12 CHECK HARNESS CONNECTOR BETWEEN
LOCK-UP DUTY SOLENOID AND TRANS-
MISSION.
Measure resistance of harness between lock-
up duty solenoid and transmission connector.
Connector & terminal
(T4) No. 13 — (AT3) No. 1:
Is the measured value less than the specified
value?
13 CHECK HARNESS CONNECTOR BETWEEN
LOCK-UP DUTY SOLENOID AND TRANS-
MISSION.
Measure resistance of harness between trans-
mission connector and transmission ground.
Connector & terminal
(T4) No. 13 — Transmission ground:
Does the measured value exceed the specified
value?
Step Value
10 — 17 Ω
1 Ω
1 MΩ
AT-100
Yes
Go to step 12. Replace lock-up
duty solenoid.
<Ref. to AT-67,
Shift Solenoids,
Duty Solenoids
and ATF Temper-
ature Sensor.>
Go to step 13. Repair open circuit
in harness
between TCM and
transmission con-
nector.
Even if "POWER" Repair short circuit
indicator lights up, in harness
the circuit has between lock-up
returned to a nor- duty solenoid and
mal condition at transmission con-
this time. A tempo- nector.
rary poor contact
of the connector or
harness may be
the cause. Repair
harness or con-
nector in lock-up
duty solenoid and
transmission.
No