Subaru Legacy 2003 Service Manual page 2349

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
7 CHECK SHIFT SOLENOID 1 (IN TRANSMIS-
SION).
1) Remove transmission connector from
bracket.
2) Lift-up or raise the vehicle and support with
safety stand.
3) Drain automatic transmission fluid.
CAUTION:
Do not drain the automatic transmission flu-
id until it cools down.
4) Remove oil pan, and disconnect connector
from shift solenoid 1.
5) Measure resistance between shift solenoid
1 connector and transmission ground.
Terminal
No. 1 — Transmission ground:
Is the measured value within the specified
range?
8 CHECK HARNESS CONNECTOR BETWEEN
SHIFT SOLENOID 1 AND TRANSMISSION.
Measure resistance of harness between shift
solenoid 1 and transmission connector.
Connector & terminal
(AT5) No. 1 — (T4) No. 1:
Is the measured value less than the specified
value?
9 CHECK HARNESS CONNECTOR BETWEEN
SHIFT SOLENOID 1 AND TRANSMISSION.
Measure resistance of harness between shift
solenoid 1 connector and transmission ground.
Connector & terminal
(T4) No. 1 — Transmission ground:
Does the measured value exceed the specified
value?
Step Value
10 — 16 Ω
1 Ω
1 MΩ
AT-74
Yes
Go to step 8. Replace shift sole-
noid 1. <Ref. to
AT-67, Shift Sole-
noids, Duty Sole-
noids and ATF
Temperature Sen-
sor.>
Go to step 9. Repair open circuit
in harness
between shift sole-
noid 1 and trans-
mission connector.
Even if "POWER" Repair short circuit
indicator lights up, harness between
the circuit has shift solenoid 1
returned to a nor- and transmission
mal condition at connector.
this time. A tempo-
rary poor contact
of the connector or
harness may be
the cause. Repair
harness or con-
nector in shift sole-
noid 1 and
transmission.
No